CN203517403U - Light source for illumination and an illumination device - Google Patents

Abstract

The utility model relates to a light source for lighting and a lighting device. The light source (1) for illumination is equipped with: a translucent spherical cover (10), a support member (40) having a pillar (41) extending to the inside of the spherical cover (10), and supported by the support member (40). The substrate (21) arranged in the spherical cover (10), and the first light-emitting element (22) and the second light-emitting element (22) arranged on the substrate (21); the first light-emitting element (22) faces The pillar (41) is disposed on the main surface (21a) of the substrate (21) in a direction opposite to the support (41), and the second light emitting element (22) is disposed on the main surface (21a) so as to face a direction different from that of the first light emitting element (22). The substrate (21), the supporting member (40) supports the substrate (21) in a state of contacting the back surface (21b) of the surface opposite to the main surface (21a) of the substrate (21), relative to the substrate (21) The ratio of the area of the back surface (21b) to the contact area of the support member (40) and the back surface (21b) is 5% or more.

Description

Light source for lighting and lighting device

technical field

The utility model relates to a light source for illumination having a light-emitting element arranged on a substrate, and an illumination device provided with the light source for illumination.

Background technique

Semiconductor light-emitting elements such as light-emitting diodes (Light Emitting Diode: LED) are expected to become new light sources for various lamps due to their high energy efficiency and long life. As a light source for lighting, LED lamps using LEDs as light sources are being studied develop.

The LED lamp includes a bulb-shaped LED lamp (bulb-shaped LED lamp) replacing a bulb-shaped fluorescent lamp and an incandescent lamp, or a straight-tube LED lamp (straight-tube LED lamp) replacing a straight-tube fluorescent lamp. For example, Patent Document 1 discloses a conventional bulb-shaped LED lamp.

In an LED lamp, an LED module (light emitting device) in which a plurality of LEDs are mounted on a substrate is used as a light source.

(Prior art literature)

(patent documents)

Patent Document 1 Japanese Patent Application Publication No. 2006-313717

In recent years, research has been underway on bulb-shaped LED lamps that mimic the configuration of incandescent lamps in terms of light emission characteristics and appearance. For example, a bulb-shaped LED lamp is disclosed that utilizes a globe (glass bulb) used in an incandescent lamp, and holds an LED module at a central position inside the globe.

More specifically, the LED module is fixed to the top of the pillar with a pillar (mandrel) extending from the opening of the globe toward the center of the globe.

In such a bulb-shaped LED lamp, in order to obtain a light distribution characteristic similar to that of a general incandescent lamp using a conventional filament coil, not only the main surface of the substrate of the LED module (the one on which a plurality of LED chips are mounted, the globe cover) The direction of the surface on the side of the vertex) also wants to emit light from multiple directions.

Here, when the LEDs included in the LED module emit light, the LEDs themselves generate heat, which increases the temperature of the LEDs and reduces the light output. That is, the luminous efficiency of an LED decreases due to the heat emitted by itself.

Therefore, simply increasing the number of LEDs in order for the LED module to emit light in multiple directions creates an environment where the temperature of each LED tends to rise, resulting in a problem that the luminous efficiency of each LED decreases.

Utility model content

In consideration of the above-mentioned conventional problems, the present invention aims to provide a light source for illumination and an illumination device having excellent light distribution characteristics.

In order to achieve the above object, a light source for illumination according to an embodiment of the present invention includes: a light-transmitting spherical cover; a supporting member having a pillar extending inwardly of the spherical cover; The component is supported so as to be arranged in the spherical cover; and the first light emitting element and the second light emitting element arranged on the substrate, the first light emitting element is arranged in a direction opposite to the pillar. arranged on the main surface of the substrate, the second light-emitting element is arranged on the substrate in a direction different from that of the first light-emitting element, and the support member is arranged on the substrate with the The back surface of the substrate is a surface opposite to the main surface, and the support member is in contact with the back surface relative to the area of the back surface of the substrate. The proportion of the area is more than 5%.

In addition, in the light source for illumination according to an embodiment of the present invention, when the substrate is viewed from the side of the main surface, at least three of the first light emitting elements may surround the substrate. It is arranged on the base plate in a manner of touching the pillars.

Furthermore, in the light source for illumination according to an embodiment of the present invention, the substrate may have at least three extensions extending in a direction intersecting the axial direction of the support. Being extended, each of the at least three extensions is configured with at least one first light-emitting element.

In addition, in the light source for illumination according to an embodiment of the present invention, at least three of the first light emitting elements may be arranged on the substrate and positioned at the center of the pillar axis. on the circumference.

Furthermore, in the light source for illumination according to one embodiment of the present invention, at least one of the second light emitting elements may be arranged on the back surface of the substrate.

In addition, in the light source for illumination according to an embodiment of the present invention, the support member may have a mounting portion on which the substrate is mounted, and the mounting portion may be connected to the spherical cover of the support. The ends on the inner side are connected, the substrate has a first substrate arranged on the upper surface of the installation part and a second substrate arranged on the lower surface of the installation part, and the upper surface of the installation part refers to the surface on the side opposite to the pillar, the lower surface of the mounting portion refers to the surface on the side of the pillar, the first light-emitting element is arranged on the first substrate, and the second light-emitting element configured on the second substrate.

In addition, in the light source for illumination according to the embodiment of the present invention, the support member may have a mounting portion for mounting the substrate, and the mounting portion and the support may be placed on the spherical cover. The ends on the inner side are connected, the substrate has a first substrate arranged on the upper surface of the installation part and a second substrate arranged on the side surface of the installation part, and the upper surface of the installation part is refers to the surface opposite to the pillar, the side surface of the mounting portion refers to a surface along a direction intersecting the upper surface, the first light-emitting element is arranged on the first substrate, and the second light emitting element is disposed on the first substrate. Two light emitting elements are configured on the second substrate.

In addition, in the light source for illumination according to an embodiment of the present invention, the substrate may be supported by the support member in a bent state, and the main surface of the substrate may have: The first main surface arranged on the end surface of the support member, and the second main surface formed by bending the substrate in a different direction from the first main surface, the first light emitting element is arranged on the The first main surface, the second light emitting element is arranged on the second main surface.

Furthermore, in the light source for illumination according to one embodiment of the present invention, the first light emitting element and the second light emitting element may each have a container and an LED mounted in the container. Chip surface mount type LED components.

Furthermore, in the light source for illumination according to one embodiment of the present invention, each of the first light emitting element and the second light emitting element may be an LED chip mounted on the substrate.

In addition, in the light source for illumination according to an embodiment of the present invention, the light source for illumination may further include a wavelength conversion body, the wavelength conversion body is a member of a predetermined shape, and the wavelength conversion body The wavelength conversion body is arranged in the spherical cover so as to cover the first light emitting element and the second light emitting element, and the wavelength conversion body converts light emitted from the first The wavelength of light incident on the element and the second light emitting element is converted into a predetermined wavelength and emitted.

Moreover, in the light source for illumination which concerns on one Embodiment of this invention, the said globe cover may be a candle-shaped globe cover.

Furthermore, in the light source for illumination according to an embodiment of the present invention, the ratio of the area of the support member in contact with the back surface to the area of the back surface of the substrate may be more than 10%.

Furthermore, in the light source for illumination according to an embodiment of the present invention, the ratio of the area of the support member in contact with the back surface to the area of the back surface of the substrate may be more than 25%.

Moreover, the illuminating device in one Embodiment of this invention is provided with the light source for illumination concerning any one of the above-mentioned embodiment.

According to the present invention, it is possible to provide a light source for illumination and an illumination device having excellent light distribution characteristics.

Description of drawings

FIG. 1 is a front view of a light bulb-shaped lamp according to Embodiment 1. FIG.

FIG. 2 is an exploded perspective view of the light bulb-shaped lamp according to Embodiment 1. FIG.

FIG. 3 shows an example of the size of the contact area between the support member and the substrate in the light bulb-shaped lamp according to Embodiment 1. As shown in FIG.

FIG.4(a) and FIG.4(b) have shown the outline|summary of the structure of the LED module which concerns on the modification 1 of Embodiment 1. As shown in FIG.

FIG.5(a) and FIG.5(b) have shown the outline|summary of the structure of the LED module which concerns on the modification 2 of Embodiment 1. As shown in FIG.

FIG.6(a) and FIG.6(b) have shown the outline|summary of the structure of the LED module which concerns on the modification 3 of Embodiment 1. As shown in FIG.

FIG. 7 shows an outline of the configuration of an LED module according to Modification 4 of Embodiment 1. As shown in FIG.

FIG. 8 shows a schematic configuration of an LED module according to Modification 5 of Embodiment 1. As shown in FIG.

FIG. 9 shows an outline of the configuration of an LED module according to Modification 6 of Embodiment 1. As shown in FIG.

FIG. 10 shows an outline of the configuration of an LED module according to Modification 7 of Embodiment 1. As shown in FIG.

FIG. 11 shows an outline of the configuration of an LED module according to Modification 8 of Embodiment 1. As shown in FIG.

Fig. 12 is a front view of a light bulb-shaped lamp as a comparative example.

FIG. 13 is a light distribution graph showing the light distribution characteristics of the light bulb-shaped lamp shown in FIG. 12 .

14 is a light distribution graph showing light distribution characteristics of a light bulb-shaped lamp including an LED module according to Modification 1. FIG.

FIG. 15 shows the relationship between the ratio of the contact area between the support member and the substrate to the substrate area, and the temperature of the light emitting element.

FIG. 16 is a cross-sectional view of a part of the light bulb-shaped lamp according to Embodiment 2. FIG.

FIG. 17 is an external perspective view of a light bulb-shaped lamp according to Embodiment 3. FIG.

FIG. 18 is a schematic cross-sectional view of a lighting device according to Embodiment 4. FIG.

FIG. 19 is an external perspective view of a lighting device according to Embodiment 5. FIG.

Detailed ways

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, each figure is a schematic figure, and is not a strict illustration.

In addition, the embodiment described below is a general example or a specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions and connection modes of the components shown in the following embodiments are examples, and do not limit the gist of the present invention. In addition, among the constituent elements of the following embodiments, constituent elements not described in the independent claims are described as arbitrary constituent elements.

(Embodiment 1)

First, the overall configuration of the light bulb-shaped lamp 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2 .

FIG. 1 is a front view of a light bulb-shaped lamp 1 according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the light bulb-shaped lamp 1 according to the first embodiment.

In addition, in FIG. 1 , the dashed-dotted line drawn along the vertical direction of the paper is the lamp axis J (central axis) of the light bulb-shaped lamp 1 . The lamp axis J refers to an axis serving as the center of rotation when the lightbulb-shaped lamp 1 is attached to a socket of a lighting device (not shown in FIGS. 1 and 2 ), and coincides with the rotation axis of the base 30 .

The lightbulb-shaped lamp 1 is an example of a light source for illumination, and is a lightbulb-shaped LED lamp as a substitute for a lightbulb-shaped fluorescent lamp or an incandescent lamp.

The bulb-shaped lamp 1 includes a translucent glove 10 , a support member 40 , a substrate 21 arranged inside the glove 10 and supported by the support member 40 , and a plurality of light emitting elements 22 arranged on the substrate 21 .

The supporting member 40 has a support column 41 extending toward the inside of the glove 10 . Furthermore, the support member 40 supports the substrate 21 in a state of being in contact with the back surface 21 b of the substrate 21 .

Furthermore, in the present embodiment, the LED module 20 is composed of a substrate 21 and a plurality of light emitting elements 22 .

Furthermore, among the plurality of light emitting elements 22 , the light emitting element 22 disposed on the main surface 21 a of the substrate 21 in a direction opposite to the pillar 41 is an example of a first light emitting element.

In addition, in this embodiment, the surface opposite to the main surface 21a of the substrate 21 is the back surface 21b, and the light emitting element 22 arranged on the back surface 21b is an example of a second light emitting element. That is, the second light emitting element is arranged on the substrate 21 in a direction different from that of the first light emitting element.

The lightbulb-shaped lamp 1 having such a structure is characterized in that, relative to the area of the back surface 21b of the substrate 21, the contact area between the support member 40 and the back surface 21b (the contact area between the support member 40 and the substrate 21) occupies The rate is above 5%.

According to this feature, the light bulb-shaped lamp 1 can emit light in multiple directions through the plurality of light emitting elements 22, and the heat dissipation efficiency of each of the plurality of light emitting elements 22 can be improved. The contact area between the support member 40 and the substrate 21 will be described in detail later using FIG. 3 .

The lightbulb-shaped lamp 1 of this embodiment further includes a base 30 receiving electric power from the outside of the lamp, a base 50 connected to a support member 40 , a resin case 60 , lead wires 70 a and 70 b , and a drive circuit 80 .

The lightbulb-shaped lamp 1 includes a globe 10 , a resin case 60 , and a base 30 to form an enclosure. Each component of the lightbulb-shaped lamp 1 which concerns on this embodiment is demonstrated below.

[dome cover]

The glove 10 is a translucent cover capable of accommodating the LED module 20 and allowing light from the LED module 20 to pass through to the outside of the lamp. The light of the LED module 20 incident on the inner surface of the glove 10 passes through the glove 10 and is extracted to the outside of the glove 10 .

The glove 10 in this embodiment is made of a material that is transparent to light from the LED module 20 . As such a glove 10 , for example, a glass bulb (transparent bulb) made of silica glass that is transparent to visible light can be used.

In this case, the LED module 20 housed in the glove 10 can be visually observed from the outside of the glove 10 .

In addition, the glove 10 does not need to be transparent with respect to visible light, and the glove 10 only needs to have a light diffusing function. That is, a diffusion region for diffusing light from the LED module 20 may be formed on the inner surface or the outer surface of the glove 10 .

In this way, by giving the glove 10 a light diffusing function, it is possible to diffuse the light incident on the glove 10 from the LED module 20 .

In addition, the material of the glove 10 is not limited to glass, and a resin material made of synthetic resin such as acrylic (PMMA: Poly Methyl Methacrylate) or polycarbonate (PC: Poly Carbonate) may be used.

[LED module]

The LED module 20 has a substrate 21 and a plurality of light-emitting elements 22 arranged on the substrate 21, and is a light-emitting module (light-emitting device) that emits light by electric power supplied from lead wires 70a and 70b.

In addition, in this embodiment, a surface mount (SMD: Surface Mount Device) type LED element is used as the light emitting element 22 included in the LED module 20 .

The substrate 21 is supported by the supporting member 40 and arranged inside the above-mentioned glove 10 . That is, the LED module 20 is held within the glove 10 by the supporting member 40 .

The LED module 20 is arranged at the center of the spherical shape formed by the glove 10 (for example, inside the globule 10 having a large inner diameter).

That is, the lightbulb-shaped lamp 1 in this embodiment adopts a configuration in which an LED module 20 (CMT: Center Mount Technology) is arranged at the center position of the glove 10 .

Thus, by arranging the LED module 20 at the center of the glove 10, the light distribution characteristic of the bulb-shaped lamp 1 can be made close to that of a conventional general incandescent lamp using a filament coil.

Furthermore, in the LED module 20 of this embodiment, four light emitting elements 22 are arranged on the main surface 21 a of the substrate 21 , and two light emitting elements 22 are arranged on the back surface 21 b of the substrate 21 . That is, the LED module 20 has six light emitting elements 22 in total. However, the number and arrangement of the light emitting elements 22 in the LED module 20 are not limited thereto.

For example, only one light emitting element 22 may be arranged on each of the main surface 21 a and the rear surface 21 b of the substrate 21 .

That is, at least one of the plurality of light emitting elements 22 included in the bulb-shaped lamp 1 may be arranged on the main surface 21a of the substrate 21, and at least one of the other light emitting elements 22 may also be arranged so that The direction to face is different from the direction of the light emitting elements 22 arranged on the main surface 21a. Accordingly, light can be emitted in multiple directions (expansion of the light distribution angle).

The substrate 21 is, for example, a substrate with a thickness of about 1 mm. In this embodiment, for example, a white alumina substrate having a light reflectance of 70% or more is used as the substrate 21 .

Moreover, the material of the substrate 21 included in the LED module 20 is not limited to alumina. For example, a translucent ceramic substrate made of aluminum nitride, a transparent glass substrate, a substrate made of crystal, a sapphire substrate, or a resin substrate can be used as the substrate 21 .

In addition, instead of a rigid substrate, a flexible substrate or a rigid flexible substrate may be used as the substrate 21 .

In addition, the substrate 21 may also have translucency. As the light-transmitting substrate 21, for example, a substrate having a visible light transmittance (ratio of light beams emitted from the main surface 21a to the back surface 21b and passing through the substrate 21) of 5% or more can be used.

Furthermore, as the substrate 21 , a substrate mainly composed of a metal obtained by applying an insulating coating to a base material of a metal such as aluminum may be used. By using a metal-based substrate as the substrate 21 , for example, heat dissipation efficiency can be improved for the plurality of light emitting elements 22 .

Light emitting element 22 as an SMD type LED element, as shown in FIG.

In this embodiment, for example, a blue LED chip that emits blue light is used as the LED chip 22b. As the blue LED chip, for example, a gallium nitride-based semiconductor light emitting element having a central wavelength of 440 nm to 470 nm, which is made of an InGaN-based material, can be used.

The wavelength conversion material 22 d is phosphor particles in this embodiment, and the sealing member 22 c including the phosphor particles is located inside the light emitting element 22 .

The wavelength (color) of light emitted from the LED chip 22b is converted by the sealing member 22c having the wavelength conversion material 22d. As such a sealing member 22c, for example, an insulating resin material containing phosphor particles (phosphor-containing resin) can be exemplified. The phosphor particles are excited by the light emitted from the LED chip 22b to emit light of a desired color (wavelength).

As a translucent resin material which comprises the sealing member 22c, a silicone resin is used, for example. Moreover, you may disperse light-diffusion materials, such as silica, in the sealing member 22c. Furthermore, the sealing member 22c does not have to be formed of a resin material, and may be formed of an organic material such as a fluorine-based resin, or an inorganic material such as low-melting glass or sol-gel glass.

For example, when the LED chip 22b is a blue LED chip, in order to obtain white light, phosphor particles as the wavelength conversion material 22d contained in the sealing member 22c are, for example, YAG (yttrium, aluminum, garnet)-based phosphor particles. Yellow phosphor particles.

Accordingly, part of the blue light emitted by the LED chip 22b is wavelength-converted into yellow light by the yellow phosphor particles contained in the sealing member 22c. Then, the blue light not absorbed by the yellow phosphor particles is mixed with the yellow light whose wavelength has been converted by the yellow phosphor particles, and is emitted as white light from the sealing member 22c.

In addition, the material, shape, etc. of the container 22a are not particularly limited. As the material of the container 22a, for example, a resin having a high transmittance to visible light may be used. In this case, for example, a lot of light can be taken out from the side surface of the container 22a, and the light distribution angle of the light emitting element 22 is enlarged. Therefore, the light distribution angle of the LED module 20 including one or more such light emitting elements 22 is expanded.

Six light emitting elements 22 having such a configuration are electrically connected in series in the present embodiment.

Specifically, in the present embodiment, the lead wire 70 a is a wire (positive-side output terminal wire) for supplying a positive voltage from the drive circuit 80 to the LED module 20 . The lead wire 70b is a wire (negative-side output terminal wire) for supplying a negative voltage from the driving circuit 80 to the LED module 20 .

That is, the direct current from the lead wire 70a is, for example, the light emitting element 22 on the left side of the back surface 21b of the substrate 21 in FIG. The sequence of elements 22 is provided and flows into lead 70b.

In this way, the six light-emitting elements 22 included in the LED module 20 are supplied with direct current necessary for light emission, whereby the six light-emitting elements 22 each emit light.

In addition, the wiring pattern connected to each light emitting element 22 provided on the substrate 21 is not particularly limited, as long as the power required for light emission can be supplied to the plurality of light emitting elements 22 included in the LED module 20 as described above, Any wiring pattern can be used.

That is, in the LED module 20, various types of wiring can be adopted depending on the number of light-emitting elements 22 included in the LED module 20, the manner of arrangement, and the manner of connection (series connection, parallel connection, mixed series and parallel connection, etc.). pattern. This is the same as that of the LED modules according to the modified examples described later.

[lamp holder]

The base 30 is a power receiving unit, and receives power for causing the LEDs of the LED module 20 to emit light from the outside of the light bulb-shaped lamp 1 . The base 30 receives electric power through two contacts, and the electric power received by the base 30 is input to the power input part of the drive circuit 80 via lead wires.

For example, the base 30 is supplied with AC power from a commercial power supply. Specifically, the base 30 is attached to a socket of a lighting fixture (illumination device), and receives alternating current from the socket. Accordingly, the light bulb-shaped lamp 1 (LED module 20 ) is turned on.

In addition, the type of the base 30 is not particularly limited, but in this embodiment, a screw-type Edison screw (E-type) base is used. In addition, the E-type base used as the base 30 includes, for example, an E26 type, an E17 type, or an E16 type.

[support parts]

The support member 40 has a metal support post 41 provided to extend from the vicinity of the opening 11 of the glove 10 to the inside of the glove 10 .

In the present embodiment, the support member 40 has a mounting portion 42 connected to an end portion of the strut 41 on the inner side of the glove 10 . The substrate 21 is mounted on the mounting portion 42 .

That is, one end of the support member 40 is connected to the LED module 20 , and the other end is connected to the pedestal 50 . That is, the LED module 20 is fixed by the supporting member 40 so as to be arranged in the glove 10 .

The support member 40 can also function as a heat dissipation member for dissipating heat generated in the LED module 20 to the base 30 side. Therefore, by using a metal material with high thermal conductivity as the main component constituting the support member 40, the heat dissipation efficiency of the support member 40 can be improved. The metal material with high thermal conductivity has a thermal conductivity of about 237 [W/m·K], for example. Aluminum (Al).

In this way, it is possible to suppress reductions in the luminous efficiency and lifetime of the light emitting element 22 (LED chip 22 b ) due to temperature rise.

As the metal material of the support member 40, copper (Cu), iron (Fe), or the like may be used other than aluminum alloy. In addition, the material of the support member 40 may be resin instead of metal.

In addition, a structure that can also be adopted as the pillar 40 is to form a metal film on the surface of the pillar made of resin or the like.

The supporting member 40 has a strut 41 whose cross-sectional area does not change in the axial direction (the Z-axis direction in this embodiment) in this embodiment, and a mounting portion 42 connected to the end of the strut 41 . The mounting part 42 has an end surface 45 for fixing the LED module 20 in a cylindrical shape.

In addition, the mounting part 42 and the support column 41 may be integrated or may be separate entities. For example, the end portion of the support column 41 can be used as the mounting portion 42 . In addition, the mounting portion 42 , which is a component separate from the support 41 , is connected to the end of the support 41 by, for example, screws, welding, welding, or an adhesive.

In this embodiment, the support member 40 supports the LED module 20 in the state where the end surface 45 is in contact with the back surface 21b of the board|substrate 21 of the LED module 20. As shown in FIG.

Specifically, the back surface 21b of the LED module 20 and the end surface 45 of the supporting member 40 are adhered together with a resin adhesive such as silicone resin, for example.

Thus, in this embodiment, the LED module 20 is supported by the support member 40 in the state which the back surface 21b of the board|substrate 21 and the end surface 45 of the support member 40 contact|abut. Accordingly, the heat radiation efficiency of the LED module 20 is improved, and it is possible to suppress a decrease in the luminous efficiency of the LED chip 22b and a decrease in lifetime due to a rise in temperature.

FIG. 3 shows an example of the size of the contact area between the support member 40 and the substrate 21 in the light bulb-shaped lamp 1 according to Embodiment 1. As shown in FIG.

3 is a perspective view of the LED module 20 viewed from the main surface 21a side of the substrate 21. The light emitting element 22 is shown as a dotted rectangle, and the end surface 45 of the supporting member 40 is shown as a rectangle with a dot pattern. In addition, the representation methods such as the dot pattern adopted in the perspective view of FIG. 3 are also adopted in FIGS. 4( b ), 5 ( b ), and 6 ( b ), which will be described later.

In addition, in this specification, the main surface side of the substrate may be expressed as "upper", and the rear side of the substrate may be expressed as "lower", and these are for convenience of description. That is, expressions such as "up" and "down" are not limited to, for example, the state when the light bulb-shaped lamp 1 is attached to a lighting fixture.

In this embodiment, the ratio of the contact area between the support member 40 and the substrate 21 is 5% or more with respect to the area of the back surface 21 b , which is the surface of the substrate 21 in contact with the support member 40 . Furthermore, in the present embodiment, the substrate 21 is a flat member, and the area of the main surface 21 a of the substrate 21 is substantially the same as the area of the rear surface 21 b. Hereinafter, the area of the back surface of the substrate is simply referred to as "the area of the substrate".

That is, the ratio of the area of the end surface 45 of the support member 40 to the area of the substrate 21 in FIG. 3 (the area of the rectangle in the solid line) is 5% or more. Specifically, the ratio in Figure 3 is about 27%.

In this way, in this embodiment, in order to make the ratio of the contact area of the support member 40 to the area of the substrate 21 more than a predetermined value, the contact area between the substrate 21 and the support member 40 is ensured, and the contact area to the support member 40 is also ensured. On the rear surface 21b of the substrate 21 is a region where the light emitting element 22 is disposed.

In this way, while emitting light from the LED module 20 in multiple directions, the effect of dissipating heat generated in the LED module 20 can be enhanced.

Furthermore, the relationship between the ratio of the contact area of the support member 40 to the area of the substrate 21 and the temperature at the time of light emission of the light emitting element 22 will be described with reference to FIG. 15 .

In addition, the shape of the pillar 41 in the supporting member 40 is not limited to the columnar shape, and may be a prism shape, for example. Furthermore, the cross-sectional shape and cross-sectional area of the pillar 41 do not have to be constant in the axial direction of the pillar 41 , and the cross-sectional shape or cross-sectional area may change in the middle of the axial direction.

[Pedestal]

The pedestal 50 is a member for supporting the supporting member 40 and is fixed to the resin case 60 . The pedestal 50 is arranged to be in contact with the opening end of the opening 11 of the glove 10 so as to close the opening 11 of the glove 10 .

Specifically, the pedestal 50 is a disk-shaped member having a stepped portion on the edge, and the stepped portion is in contact with the opening end of the opening portion 11 of the glove 10 . And, at the stepped portion, the pedestal 50 , the resin case 60 , and the opening end of the opening 11 of the glove 10 are fixed with an adhesive.

Like the support member 40 , the pedestal 50 is made of a metal material with high thermal conductivity such as aluminum, so that the heat radiation efficiency of the LED module 20 that is heat-conducted to the support member 40 through the pedestal 50 can be improved. In this way, it is possible to suppress a decrease in the luminous efficiency of the light emitting element 22 (LED chip 22 b ) and a decrease in lifetime due to temperature rise. Furthermore, the pedestal 50 and the supporting member 40 may be integrally formed by the same mold.

[resin case]

The resin case 60 is an insulating case (circuit holder) for accommodating the drive circuit 80 in addition to insulating the support member 40 and the base 30 . As shown in FIG. 3( a ), the resin case 60 is composed of a large-diameter cylindrical first case portion 61 and a small-diameter cylindrical second case portion 62 . The resin case 60 is formed of, for example, polybutylene terephthalate (PBT: Poly Butylene Terephthalate).

Since the outer surface of the first case portion 61 is exposed to the outside, the heat conducted to the resin case 60 is mainly dissipated by the first case portion 61 . The second casing part 62 is configured such that its outer peripheral surface is in contact with the inner peripheral surface of the cap 30 , and a screwing part for screwing with the cap 30 is formed on the outer peripheral surface of the second casing part 62 .

[lead]

The lead wires 70 a and 70 b are lead wire pairs for supplying power for lighting the LED module 20 from the drive circuit 80 to the LED module 20 . The lead wires 70 a and 70 b are, for example, insulation-coated wires in which wire-like metal wires such as copper wires are covered with an insulating resin.

The lead wires 70a ( 70b ) are arranged in the glove 10 , and as described above, one end is electrically connected to the positive (negative) terminal of the LED module 20 , and the other end is electrically connected to the power output part of the driving circuit 80 .

[Drive circuit]

The drive circuit 80 is a circuit unit for lighting each light emitting element 22 of the LED module 20 and is covered by the resin case 60 . The drive circuit 80 converts the AC power supplied from the base 30 into DC power, and supplies the converted DC power to each light emitting element 22 of the LED module 20 through the two lead wires 70a and 70b.

The drive circuit 80 is constituted by, for example, a circuit board and a plurality of circuit elements (electronic components) mounted on the circuit board. The circuit board is a printed circuit board on which metal wiring is patterned, and a plurality of circuit elements mounted on the circuit board are electrically connected to each other. In the present embodiment, the main surface of the circuit board on which the plurality of circuit elements are arranged is arranged in a state perpendicular to the lamp axis J. As shown in FIG.

Furthermore, the plurality of circuit elements are constituted by, for example, various capacitors, resistor elements, rectifier circuit elements, coil elements, choke coils (choke transformers), noise suppression filters, diodes, or integrated circuit elements.

In addition, the light bulb-shaped lamp 1 does not need to include the drive circuit 80 . For example, when direct-current power is directly supplied to the lightbulb-shaped lamp 1 from a lighting fixture, a battery, etc., the lightbulb-shaped lamp 1 does not need to be equipped with the drive circuit 80. In addition, the drive circuit 80 is not limited to a smoothing circuit, and may be configured by appropriately selecting and combining a dimming circuit, a boosting circuit, and the like.

As described above, the light bulb-shaped lamp 1 of this embodiment has a plurality of light emitting elements 22 arranged on the substrate 21, and the plurality of light emitting elements 22 includes at least two light emitting elements 22 facing in different directions (the first light emitting element and the first light emitting element). second light-emitting element). Furthermore, the ratio of the contact area between the support member 40 and the substrate 21 to the area of the substrate 21 is 5% or more.

According to this configuration, in the lightbulb-shaped lamp 1 , while emitting light in multiple directions, it is possible to suppress a decrease in luminous efficiency due to heat generated by each of the plurality of light-emitting elements 22 when emitting light. That is, the light bulb-shaped lamp 1 of the present embodiment is a light source for illumination having excellent light distribution characteristics.

The light source for illumination according to the present invention has been described above based on the first embodiment, but the present invention is not limited by the first embodiment.

Therefore, referring to FIG. 4( a ) and FIG. 4( b ) to FIG. 11 , various modification examples related to the light source for illumination (bulb-shaped lamp) will be described focusing on the differences from the first embodiment described above. That is , in each of the following modified examples, the description of the components such as the light emitting element 22 already described may be omitted.

Various modifications of the light emitting device (LED module) will be described below using modifications 1 to 8. FIG.

That is, each of the LED modules according to Modifications 1 to 8 is an LED module that can be used as a light emitting device instead of, for example, the LED module 20 of the light bulb-shaped lamp 1 shown in FIG. 1 .

[Modification 1]

FIG.4(a) and FIG.4(b) have shown the outline|summary of the structure of the LED module 120 which concerns on the modification 1 of Embodiment 1. As shown in FIG.

As shown in FIG. 4( a ), in the LED module 120 according to Modification 1, at least three light emitting elements 22 are arranged so as to surround the pillar 141 when the substrate 25 is viewed from the main surface 25 a side. on the main face 25a.

Specifically, the base plate 25 in this modified example has three extensions 25c extending in a direction intersecting the axial direction of the pillar 141, and is arranged at least on the main surface 25a of each of the three extensions 25c. There is a light emitting element 22 .

More specifically, two light-emitting elements 22 (first light-emitting elements) are arranged on each main surface 25a of the three extensions 25c, and a rear surface 25b of each of the three extensions 25c is arranged. One light emitting element 22 (second light emitting element). A total of nine light emitting elements 22 are electrically connected in series.

In this modified example, the supporting member 140 supporting the LED module 120 is connected to the end of the support 141 and has a mounting portion 142 having a shape corresponding to the board 25 .

FIG. 4( b ) shows an outline of the configuration of the LED module 120 when viewed from above. In FIG. 4( b ), the light emitting element 22 is represented by a dotted rectangle, and the end surface 145 of the support member 140 (the upper surface of the mounting portion 142 ) is represented by a dotted rectangle.

The attachment part 142 has three parts corresponding to the three extension parts 25c, and these three parts protrude in the direction intersecting the axial direction of the support|pillar 141. As shown in FIG. Accordingly, while stably fixing the substrate 25 (LED module 120 ) can be achieved, an appropriate contact area between the mounting portion 142 (support member 140 ) and the substrate 25 can be ensured.

Specifically, the ratio of the contact area between the support member 140 and the substrate 25 to the area of the substrate 25 is 5% or more.

That is, the substrate 25 of the LED module 120 has three extensions 25c extending radially in a direction intersecting the axial direction of the pillar 141, and one or more light emitting elements 22 are arranged on each extension 25c. More specifically, at least one light emitting element 22 is disposed on the main surface 25a and the rear surface 25b of each extension portion 25c. Accordingly, it is possible to emit light in multiple directions.

Furthermore, the heat from the plurality of light emitting elements 22 arranged in this way can be efficiently released by the support member 140 supporting the substrate 25 with the end surface 145 having a shape corresponding to the shape of the substrate 25 . In this way, it is possible to suppress reduction in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 120 is a light source for illumination having excellent light distribution characteristics.

[Modification 2]

FIG.5(a) and FIG.5(b) have shown the outline|summary of the structure of the LED module 121 which concerns on the modification 2 of Embodiment 1. As shown in FIG.

As shown in FIG. 5( a ), in the LED module 121 according to Modification 2, when the substrate 26 is viewed from the main surface 26 a side, at least three light emitting elements 22 are arranged so as to surround the pillar 151 on the main face 26a.

Specifically, the base plate 26 in this modified example has four extensions 26c extending in a direction intersecting the axial direction of the support 151, and each of the main surfaces 26a of the four extensions 26c is respectively arranged with One light emitting element 22 (first light emitting element). Furthermore, one light emitting element 22 (second light emitting element) is disposed on each of the back surfaces 26b of the four extensions 26c.

In this modified example, the support member 150 supporting the LED module 121 has a mounting portion 152 connected to the end of the support 151 , and the shape of the mounting portion 152 corresponds to the substrate 26 .

FIG.5(b) has shown the component when the LED module 121 is seen from above. In FIG. 5( b ), the light emitting element 22 is represented by a dotted rectangle, and the end surface 155 of the supporting member 150 (the upper surface of the mounting portion 152 ) is represented by a dotted rectangle.

The mounting portion 152 has four portions protruding in a direction intersecting the axial direction of the pillar 151 corresponding to the four extending portions 26c. Accordingly, while stably fixing the substrate 26 (LED module 121 ), an appropriate contact area between the mounting portion 152 (support member 150 ) and the substrate 26 can be ensured.

Specifically, the ratio of the contact area between the support member 150 and the substrate 26 to the area of the substrate 26 is 5% or more.

That is, the LED module 121 has four extensions 26 c extending radially in a direction intersecting the axial direction of the support 151 , and one or more light emitting elements 22 are arranged on each extension 26 c. More specifically, at least one light emitting element 22 is disposed on the main surface 26a and the rear surface 26b of each extension portion 26c, respectively. Accordingly, it is possible to emit light in multiple directions.

In addition, the heat generated from the plurality of light emitting elements 22 arranged in this way can be efficiently released by the supporting member 150 supporting the substrate 26 through the end surface 155 having a shape corresponding to the shape of the substrate 26 . In this way, it is possible to suppress reduction in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 121 is a light source for illumination having excellent light distribution characteristics.

Moreover, the number of extensions on the substrate on which a plurality of light emitting elements 22 are disposed is not limited to three or four. That is, a substrate having five or more extending portions may be used as a substrate on which a plurality of light emitting elements 22 are arranged.

[Modification 3]

FIG.6(a) and FIG.6(b) have shown the outline|summary of the structure of the LED module 122 which concerns on the modification 3 of Embodiment 1. As shown in FIG.

As shown in FIG. 6( a ), when an LED module 122 according to Modification 3 is viewed from above, the outer shape of the LED module 122 has a circular substrate 27 . In addition, at least three light emitting elements 22 are arranged on a circumference centered on the axis of the pillar 171 .

Specifically, in this modified example, eight light emitting elements 22 (first light emitting elements) are arranged on the main surface 27 a of the substrate 27 . In addition, although not all of them are shown in the figure, for example, eight light emitting elements 22 (second light emitting elements) are arranged on the back surface 27 b of the substrate 27 .

And, these plurality of light emitting elements 22 are electrically connected as follows, for example. The eight light emitting elements 22 on the main surface 27a are connected in series, the eight light emitting elements 22 on the main surface 27b are connected in series, and the eight light emitting elements 22 on the main surface 27a are connected in parallel with the eight light emitting elements 22 on the main surface 27b.

Thus, by using the circular substrate 27 as the substrate 27 of the LED module 122, for example, three or more light emitting elements 22 can be arranged at equal intervals on a circumference centered on the pillar 171 (support member 170). More specifically, three or more light emitting elements 22 are arranged at equal intervals on the circumference centered on the pillar 171 (support member 170 ) on the principal surface 27 a and the rear surface 27 b of the circular substrate 27 . In this way, excellent light distribution characteristics can be obtained.

Furthermore, in this modified example, the support member 170 supporting the LED module 122 has a mounting portion 172 connected to the end of the support 171 , and the shape of the mounting portion 172 corresponds to the substrate 27 .

FIG. 6( b ) shows an outline of the configuration of the LED module 122 when viewed from above. In FIG. 6( b ), the light emitting element 22 is represented by a dotted rectangle, and the end surface 175 of the supporting member 170 (the upper surface of the mounting portion 172 ) is represented by a rectangle with dots.

The mounting portion 172 has a shape corresponding to the circular substrate 27 , that is, its outer shape is circular when the mounting portion 27 is viewed from above. Accordingly, while stably fixing the substrate 27 (LED module 122 ) can be achieved, an appropriate contact area between the mounting portion 172 (support member 170 ) and the substrate 27 can be ensured.

Specifically, the ratio of the contact area between the support member 170 and the substrate 27 to the area of the substrate 27 is 5% or more.

That is, the LED module 122 is configured such that at least three light emitting elements 22 are arranged on the main surface 27 a of the substrate 27 , and these at least three light emitting elements 22 are arranged on the circumference of the substrate 27 around the axis of the pillar 171 . Furthermore, a plurality of light emitting elements 22 can also be arranged on the back surface 27b of the substrate 27 in the same manner. Accordingly, it is possible to emit light in multiple directions.

Furthermore, the heat generated from the plurality of light emitting elements 22 arranged in this way can be efficiently released by the support member 170 supporting the substrate 27 with the end surface 175 having a shape corresponding to the shape of the substrate 27 . In this way, it is possible to suppress reduction in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 122 is a light source for illumination having excellent light distribution characteristics.

In addition, the above-mentioned "circle" "on the circumference centering on the axis of the support 171" does not need to be a perfect circle. For example, three or more light-emitting elements 22 arranged on the main surface 27a of the substrate 27 may be connected in an assumed curve to form an oval or an ellipse to form a shape for identification.

In addition, the planar shape of the substrate 27 does not need to be circular. For example, three or more light-emitting elements 22 may be arranged on a circumference centered on the axis of the pillar 171 on the substrate 27 having an elliptical or polygonal shape in plan view.

[Modification 4]

FIG. 7 shows an outline of the configuration of an LED module 125 according to Modification 4 of Embodiment 1. As shown in FIG.

As shown in FIG. 7 , an LED module 125 according to Modification 4 includes a substrate 28 supported by a support member 180 and a plurality of light emitting elements 22 arranged on the substrate 28. The substrate 28 has a first substrate 28a and a second substrate. 28b. In this modified example, the first substrate 28a and the second substrate 28b are rectangular substrates.

That is, in this modified example, the substrate 28 on which the plurality of light emitting elements 22 are arranged is composed of a first substrate 28 a and a second substrate 28 b that are separated from each other.

Specifically, the first substrate 28 a is disposed on an upper surface 182 a of the mounting portion 182 , which is a surface on the mounting portion 182 opposite to the pillar 181 . The second substrate 28 b is disposed on the lower surface 182 b of the mounting portion 182 , which is the surface of the mounting portion 182 on the side of the pillar 181 . In addition, in this modified example, as shown in FIG. 7 , two second substrates 28 b are arranged on the lower surface 182 b.

The first substrate 28 a and the second substrate 28 b are adhered to the mounting portion 182 by, for example, a resin-based adhesive such as silicone resin. In addition, the two second substrates 28b and one first substrate 28a are electrically connected in series, for example, by wires (not shown).

In addition, in this modified example, the four light emitting elements 22 arranged on the first substrate 28a are each an example of a first light emitting element, and one light emitting element 22 arranged on each of the two second substrates 28b is an example of a second light emitting element. An example of a light emitting element.

In addition, in FIG. 7 , the widths of the first substrate 28 a and the second substrate 28 b in the depth direction (that is, the Y-axis direction, hereinafter the same) are, for example, equal to or less than the width of the mounting portion 182 in the depth direction. In this case, the ratio of the contact area between the support member 180 and the substrate 28 is 100% of the area of the substrate 28 (the sum of the areas of the first substrate 28 a and the two second substrates 28 b ).

Thus, in this modified example, the support member 180 has a relatively large attachment portion 182 . Accordingly, the first substrate 28 a and the second substrate 28 b , which are single-sided mounting substrates in which the light emitting element 22 is disposed on only one surface, are mounted on the mounting portion 182 so that light can be emitted from different directions.

That is, the LED module 125 according to this modified example has a plurality of light emitting elements 22 including at least two light emitting elements 22 (a first light emitting element and a second light emitting element) facing in different directions from each other. Accordingly, light can be emitted in multiple directions.

In addition, heat generated from these light emitting elements 22 is efficiently released from the support member 180 . In this way, it is possible to suppress reduction in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 125 is a light source for illumination having excellent light distribution characteristics.

[Modification 5]

FIG. 8 shows an outline of the configuration of an LED module 126 according to Modification 5 of Embodiment 1. As shown in FIG.

As shown in FIG. 8 , an LED module 126 according to Modification 5 is supported by a support member 180 having a relatively large mounting portion 182 , like the LED module 125 according to Modification 4 described above.

However, the LED module 126 according to Modification 5 differs from the LED module 125 according to Modification 4 in the direction in which light is mainly emitted.

Specifically, the LED module 126 includes a substrate 28 supported by a support member 180 and a plurality of light emitting elements 22 arranged on the substrate 28, and the substrate 28 has a first substrate 28a and a second substrate 28c. That is, the board|substrate 28 in this modification is comprised from the 1st board|substrate 28a and the 2nd board|substrate 28c which are separated from each other. In this modified example, the first substrate 28a and the second substrate 28c are rectangular substrates.

More specifically, the first substrate 28a is disposed on the upper surface 182a of the mounting portion 182, and the second substrate 28b is disposed on the side surface 182c of the mounting portion 182 along the direction intersecting the upper surface 182a. direction face. Furthermore, in this modified example, as shown in FIG. 8 , one second substrate 28c is arranged on each of the two side surfaces 182c.

The first substrate 28 a and the second substrate 28 c are adhered to the mounting portion 182 by, for example, a resin adhesive such as silicone resin. In addition, the two second substrates 28c and one first substrate 28a are electrically connected in series, for example, by wires (not shown).

In addition, in this modified example, each of the four light emitting elements 22 arranged on the first substrate 28a is an example of a first light emitting element, and one light emitting element 22 arranged on each of the two second substrates 28c is an example of a first light emitting element. An example of two light-emitting elements.

In addition, the width in the depth direction of the first substrate 28 a and the second substrate 28 c in FIG. 8 is, for example, equal to or smaller than the width in the depth direction of the mounting portion 182 . In this case, the ratio of the contact area between the support member 180 and the substrate 28 is 100% of the area of the substrate 28 (the sum of the areas of the first substrate 28a and the two second substrates 28c).

Thus, in this modified example, as in the above-described fourth modified example, the first substrate 28 a and the second substrate 28 c , which are single-sided mounted substrates, are arranged on the mounting portion 182 so as to emit light in different directions.

That is, the LED module 126 according to this modified example has a plurality of light emitting elements 22 including at least two light emitting elements 22 (a first light emitting element and a second light emitting element) facing in different directions from each other. Accordingly, light can be emitted in multiple directions.

In addition, heat generated from these light emitting elements 22 is efficiently released from the support member 180 . In this way, it is possible to suppress reduction in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 126 is a light source for illumination having excellent light distribution characteristics.

[Modification 6]

FIG. 9 shows an outline of the configuration of an LED module 127 according to Modification 6 of Embodiment 1. As shown in FIG.

As shown in FIG. 9 , an LED module 127 according to Modification 6 is supported by a support member 180 having a relatively large mounting portion 182 like LED modules 125 and 126 according to Modifications 4 and 5 described above.

However, the LED module 127 according to Modification 6 differs from Modifications 4 and 5 above in that light is emitted in multiple directions by one substrate 110 that is a single-sided mounting substrate.

Specifically, the LED module 127 includes a substrate 110 supported by a support member 180 , and a plurality of light emitting elements 22 arranged on the substrate 110 .

The substrate 110 is supported by the support member 180 in a bent state, and the main surface of the substrate 110 has a first main surface 110a arranged along the end surface (the upper surface 182a of the mounting portion 182 ) of the support member 180 , and the substrate 110 is folded by the substrate 110. The second main surface 110b is bent and formed in a direction different from that of the first main surface 110a. In this modified example, the substrate 110 is a rectangular substrate.

More specifically, the first main surface 110a is a part of the main surface (the surface on the opposite side to the mounting portion 182) of the substrate 110 that is parallel to the direction intersecting the axial direction of the pillar 181, and the second main surface 110b is a portion that is not A portion parallel to the first main surface 110a formed by bending the substrate. The substrate 110 in this state is realized by, for example, a flexible substrate.

Furthermore, in this modified example, as shown in FIG. 9 , four light emitting elements 22 are arranged on the first main surface 110 a, and one light emitting element 22 is arranged on each of the two second main surfaces 110 b. These six light emitting elements 22 in total are connected in series, for example, by a wiring pattern included in the substrate 110 .

In addition, the bent substrate 110 is adhered to the mounting portion 182 with an adhesive such as silicone resin, for example.

In addition, in this modified example, each of the four light emitting elements 22 arranged on the first main surface 110a is an example of a first light emitting element, and one light emitting element 22 arranged on each of the two second main surfaces 110b is an example of the second light emitting element.

In addition, the width of the substrate 110 in the depth direction in FIG. 9 is, for example, equal to or less than the width of the mounting portion 182 in the depth direction. In this case, the ratio of the contact area between the support member 180 and the substrate 110 to the area of the substrate 110 is 100%.

Thus, in this modified example, only the one-sided mounting substrate (substrate 110 ) on which the plurality of light emitting elements 22 are arranged is mounted on the mounting portion 182 in a bent state. In this way, the plurality of light emitting elements 22 included in the LED module 127 according to this modification includes at least two light emitting elements 22 (first light emitting element and second light emitting element) facing in different directions from each other. Accordingly, it is possible to emit light in multiple directions.

In addition, the heat released from the plurality of light emitting elements 22 is efficiently released by the support member 180 . In this way, it is possible to suppress a decrease in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 127 is a light source for illumination having excellent light distribution characteristics.

In addition, the substrate 110 may be bent, for example, on the side surface in the depth direction of the mounting portion 182 shown in FIG. 9 to arrange one or more light emitting elements 22 .

[Modification 7]

FIG. 10 shows an outline of the configuration of an LED module 128 according to Modification 7 of Embodiment 1. As shown in FIG.

As shown in FIG. 10 , the LED module 128 related to Modification 7 is the same as the LED module 127 related to the above-mentioned Modification 6, and uses a single-sided mounting substrate (substrate 111 in this modification) to realize directing the light direction. Release in multiple directions.

That is, the substrate 111 included in the LED module 128 according to Modification 7 is supported by the supporting member 180 in a bent state. In addition, the main surface of the substrate 111 has a first main surface 111a and a second main surface 111c. The second main surface 111c is formed by bending the substrate 111 and has a different orientation from the first main surface 111a. In this modified example, the substrate 111 is a rectangular substrate.

However, in the LED module 128 according to Modification 7, the main emission direction of light is different from that of the LED module 127 according to Modification 6 .

Specifically, the first main surface 111a of the substrate 111 is oriented upward (the positive direction of the Z axis), and the second main surface 111c is oriented downward (the negative direction of the Z axis). The substrate 111 having such a state is realized by a flexible substrate, for example.

Furthermore, in this modified example, as shown in FIG. 10 , four light emitting elements are arranged on the first main surface 111 a, and one light emitting element 22 is arranged on each of the two second main surfaces 111 c. These six light-emitting elements 22 in total are connected in series, for example, by a wiring pattern included in the substrate 111 .

That is, the LED module 127 according to Modification 6 has a configuration in which light is emitted mainly from above and sideways, and the LED module 128 according to Modification 7 has a configuration in which light is mainly emitted from above and below. .

In addition, in this modified example, each of the four light emitting elements 22 arranged on the first main surface 111a is an example of a first light emitting element, and each of the light emitting elements 22 arranged on the two second main surfaces 111c is an example of the second light emitting element.

In addition, in FIG. 10 , the width of the substrate 111 in the depth direction is, for example, equal to or less than the width of the mounting portion 182 in the depth direction. In this case, the ratio of the contact area between the support member 180 and the substrate 111 to the area of the substrate 111 is 100%.

In this way, in this modified example, the single-sided mounting substrate (substrate 111 ) on which the plurality of light emitting elements 22 are arranged only on one surface is mounted on the mounting portion 182 in a bent state. In this way, the plurality of light emitting elements 22 included in the LED module 128 according to this modification includes at least two light emitting elements 22 (first light emitting element and second light emitting element) facing in different directions from each other. In this way, light can be emitted in multiple directions.

In addition, the heat released from the plurality of light emitting elements 22 is efficiently released by the support member 180 . In this way, it is possible to suppress reduction in luminous efficiency due to heat emitted by each of the plurality of light emitting elements 22 .

Therefore, the light bulb-shaped lamp 1 including the LED module 128 is a light source for illumination having excellent light distribution characteristics.

Furthermore, in the above modified examples 4 to 7, the width in the depth direction of the substrate ( 28 , 110 , 111 ) shown in each of FIGS.

However, the width of the substrate ( 28 , 110 , 111 ) in the depth direction may be longer than the width of the mounting portion 182 in the depth direction. In this case, the ratio of the contact area between the support member 180 and the substrate ( 28 , 110 , 111 ) to the area of the substrate ( 28 , 110 , 111 ) is 5% or more.

[Modification 8]

FIG. 11 shows an outline of the configuration of an LED module 129 according to Modification 8 of Embodiment 1. As shown in FIG.

As shown in FIG. 11 , the LED module 129 according to Modification 8 is the same as the LED module 127 according to Modification 6 above, and adopts a structure in which a single-sided mounting substrate is used as a substrate 110, and the light is mainly emitted from the upper side and the side. Fang released.

However, the LED module 129 according to Modification 8 is mounted on the mounting portion 183 whose width is shorter than the width (the width in the X-axis direction) of the first main surface 110 a of the substrate 110 .

That is, the substrate 110 is supported by the support member 180 in a state where the second principal surface 110 b is not directly supported by the support member 180 (a state away from the support member 180 ).

In this way, for example, when attaching substrate 110 implemented as a flexible substrate to support member 180 , substrate 110 can be attached to support member 180 so that there is a portion of substrate 110 that does not contact support member 180 .

Specifically, if the ratio of the contact area between the support member 180 and the substrate 110 is 5% or more with respect to the area of the substrate 110, the substrate 110 in a bent state can be formed so that there is no contact with the support member 180. Partial state to install to the support member 180 .

Accordingly, while maintaining a predetermined heat dissipation effect by the support member 180 with respect to the heat generated by the LED module 129 , for example, the degree of freedom in the orientation of the second main surface 110 b can be increased. That is, the orientation of the second main surface 110 b can be, for example, directed outward and inward compared to the state shown in FIG. 11 .

Therefore, the light bulb-shaped lamp 1 including the LED module 129 is a light source for illumination having excellent light distribution characteristics.

[Light distribution characteristics]

Next, the light distribution characteristics of the light source for illumination according to the present invention will be described by way of comparative examples. FIG. 12 is a front view of a light bulb-shaped lamp 200 as a comparative example.

The lightbulb-shaped lamp 200 shown in FIG. 12 is equipped with the glove|globe 210, the LED module 220, and the support member 240 which supports the LED module 220 in the glove|globe 210. As shown in FIG.

The LED module 220 has a substrate 221 and four light emitting elements 222 . The light emitting element 222 is the same as the light emitting element 22 described above, and is an SMD type LED element. Furthermore, four light emitting elements 222 are arranged on the main surface 221 a of the substrate 221 , and no light emitting element 222 is arranged on the back surface 221 b of the substrate 221 . FIG. 13 is a light distribution graph showing the light distribution characteristics of the light bulb-shaped lamp 200 shown in FIG. 12 .

The light distribution graph shown in FIG. 13 shows magnitudes of luminosity for each direction of 360° including the up and down directions of the bulb-shaped lamp 200 . In this light distribution graph, the direction along the upper side of the lamp axis J of the bulb-shaped lamp 200 in FIG. ), the scale intervals in the clockwise and counterclockwise directions are 10°.

The scale (0 to 100 cd (candela)) in the radial direction of the light distribution graph represents the luminosity.

Here, the "light distribution angle" indicates the size of an angular range in which luminosity equal to or more than half of the maximum value of luminosity in a light source for illumination is emitted. That is, in the light distribution graph shown in FIG. 13 , the angular range of the light distribution angle is 50% or more (about 30 cd or more) of the maximum luminosity (about 60 cd).

Specifically, in the light distribution curve shown in FIG. 13 , the light distribution characteristic represented by the light distribution angle is in the range of approximately −40° to approximately +40° with respect to the central axis of the light bulb-shaped lamp 200 . That is, the light distribution angle of the bulb-shaped lamp 200 is about 80°. Furthermore, a larger light distribution angle can be realized by the light source for illumination according to the present invention.

As an example of the light distribution characteristic of the light source for illumination which concerns on this invention, the light distribution characteristic of the lightbulb-shaped lamp 1 provided with the LED module 120 which concerns on the said modification 1 is shown.

FIG. 14 is a light distribution graph showing the light distribution characteristics of the light bulb-shaped lamp 1 including the LED module 120 according to Modification 1. As shown in FIG.

The light distribution graph shown in FIG. 14 shows the magnitude of luminosity in each direction of 360° including the vertical direction of the light bulb-shaped lamp 1 . In this light distribution graph, the direction along the upper side of the lamp axis J (see FIG. 1 ) of the light bulb-shaped lamp 1 including the LED module 120 is defined as 0°, and the direction along the lower side of the lamp axis J is defined as 180°(-180°), the scale interval in the clockwise and counterclockwise direction is 10°.

The scale (0 to 50 cd (candela)) in the radial direction of the light distribution graph represents the luminosity.

That is, in the light distribution graph shown in FIG. 14 , the angular range in which the luminosity is 50% or more (about 25 cd or more) of the maximum value (about 50 cd) is the light distribution angle of the bulb-shaped lamp 1 .

Specifically, in the light distribution graph shown in FIG. 14 , the light distribution characteristic shown by the light distribution angle is in the range of about -150° to about +150° with the central axis of the light bulb-shaped lamp 1 as a reference. . That is, the light distribution angle of the light bulb-shaped lamp 1 including the LED module 120 is about 300°.

In this way, the light source for illumination (lightbulb-shaped lamp 1) according to the present invention is more effective than the light source for illumination (for example, the lightbulb-shaped lamp 200 shown in FIG. , a large light distribution angle can be obtained.

[radiation effect of supporting member]

Next, the heat radiation effect of the support member which concerns on this invention is demonstrated. FIG. 15 shows the relationship between the ratio of the contact area of the supporting member and the substrate (hereinafter referred to as "contact area ratio") to the area of the substrate, and the temperature of the light emitting element.

Specifically, the graph shown in FIG. 15 shows that in the LED module 122 according to Modification 3 described above, the contact area ratio and the junction temperature of the light emitting element 22 (the junction temperature of the light emitting element 22 and the substrate 27 temperature) relationship.

It can be seen from FIG. 15 that the junction temperature of the light emitting element 22 decreases as the contact area ratio increases. This is because, when the area of the end surface 175 (see FIG. 6(a) and FIG. 6(b)) of the support member 170 in contact with the substrate 21 increases, the amount of heat conduction per unit time from the substrate 27 to the support member 170 increases. for the sake.

Further, when the graph shown in FIG. 15 is examined in detail, it can be seen that as the contact area ratio increases, the reduction rate of the junction temperature of the light emitting element 22 decreases (the negative slope of the graph becomes smaller). That is, as the contact area ratio increases, the effect of reducing the temperature of the light emitting element 22 due to the increase in the contact area ratio becomes smaller.

The inventors of the present utility model noticed the change of the junction temperature of the light-emitting element 22 and the change of the reduction rate of the junction temperature, and concluded that the contact area ratio is preferably more than 5%. Specifically, it is as described below.

The drive circuit 80 included in the light bulb-shaped lamp 1 includes various electronic components, such as electrolytic capacitors, which need to be kept away from high-temperature environments.

Furthermore, the light emitting element 22 which is an SMD type LED element has the sealing member 22c containing the phosphor particle for wavelength conversion as mentioned above. The efficiency of wavelength conversion by the phosphor particles decreases in a high-temperature environment, and the same applies to the sealing member 22c, so it is important not to increase the temperature as much as possible.

Therefore, the junction temperature of the light-emitting element 22 is preferably lower than 120° C., for example, in consideration of maintaining the quality of electronic components and maintaining the wavelength conversion efficiency of light.

In addition, an increase in the contact area ratio leads to a decrease in the area on the back surface of the substrate where the light emitting element 22 can be arranged (mountable area). That is, for example, in the above-mentioned LED modules 20 and 120 to 122, in the case of a double-sided mounting substrate having one or more light-emitting elements 22 arranged on the main surface and the back surface, there is a possibility that the contact area ratio cannot be made too high. big case.

Therefore, the inventors of the present invention considered leaving room for more than 10°C for the upper limit of the junction temperature of the light-emitting element 22 at 120°C, and in order to obtain a value lower than 120°C by more than 10°C, they concluded that contact The preferable lower limit of the area ratio is 5%.

That is, in the configuration adopted in each of the first embodiment and each modification described above, the ratio of the contact area between the support member and the substrate (contact area ratio) to the area of the substrate included in the LED module is: More than 5% (0.05).

As a result, a large light distribution angle can be realized by the plurality of light emitting elements 22 having such an LED module, and a reduction in luminous efficiency due to heat generated when the plurality of light emitting elements 22 emit light can be suppressed.

And, for example, in the case of a double-sided mounting substrate such as the substrate 21 shown in FIG. 1 , the upper limit of the contact area ratio is defined according to the number and position of the light emitting elements 22 (or 23) to be mounted on the back surface of the substrate.

For example, as shown in FIG. 1 , when two light emitting elements 22 are arranged on the back surface 21 b of the substrate 21 , the upper limit of the contact area ratio is defined in the range where each of the two light emitting elements 22 does not contact the support member 40 . .

That is, the upper limit of the contact area ratio is greater than the lower limit of 5% (0.05), and is a value corresponding to the number and position of light emitting elements to be mounted on the back surface of the substrate.

In addition, the lower limit of the contact area ratio may be, for example, 10% that enables the junction temperature of the light emitting element 22 to be 100 degrees or less. That is, a more preferable contact area ratio is 10% or more.

In addition, the lower limit of the contact area ratio may be, for example, 25% that further reduces the junction temperature of the light emitting element 22 and gradually reduces the effect of reducing the temperature of the light emitting element 22 as the contact area ratio increases. That is, a more preferable contact area ratio is 25% or more.

In addition, the contact area ratio can be 5% or more, preferably 10% or more, and can be further preferably 25%. For this characteristic of the contact area ratio, it is not only applicable to the bulb related to Embodiment 1. shaped lamp 1, and can also be applied to the bulb-shaped lamp 1 according to Modifications 1 to 8.

(Embodiment 2)

Next, the lightbulb-shaped lamp 1a according to Embodiment 2 will be described focusing on differences from the lightbulb-shaped lamp 1 according to Embodiment 1 described above. That is, in the following description, illustration and description of the constituent elements such as the glove 10 already described will be omitted. Fig. 16 is a partial sectional view of a light bulb-shaped lamp 1a according to Embodiment 2 of the present invention.

The lightbulb-shaped lamp 1a shown in FIG. 16 is equipped with the glove|globe 10, the LED module 20, and the support member 40 which supports the LED module 20 in the glove|globe 10. As shown in FIG. The supporting member 40 is fixed to the base 50 .

The LED module 20 in Embodiment 2 has the board|substrate 21, and the light emitting element 23 mounted on both surfaces (the main surface 21a and the back surface 21b) of a board|substrate.

That is, the plurality of light emitting elements 23 in the embodiment includes at least two light emitting elements 23 (a first light emitting element and a second light emitting element) facing in different directions from each other.

Furthermore, the ratio of the contact area of the support member 40 and the substrate 21 to the area of the substrate 21 is equal to or greater than 5% as in the first embodiment.

Here, the light emitting element 23 in Embodiment 2 is the same as the light emitting element 22 in Embodiment 1, and is an SMD type LED element. However, unlike the light emitting element 22, the light emitting element 23 does not have the sealing member 22c containing phosphor particles.

That is, the light emitting element 23 directly emits the light emitted from the LED chip included therein without performing wavelength conversion.

Therefore, when the light emitting element 23 has a blue LED chip, blue light is directly emitted from the light emitting element 23 .

However, the lightbulb-shaped lamp 1a according to Embodiment 2 includes the wavelength converter 90 arranged in the glove 10 so as to cover the plurality of light emitting elements 23 arranged on the substrate 21 , and the wavelength converter 90 The wavelength converter 90 is a member having a predetermined shape.

The wavelength converter 90 converts the wavelength of light incident from the plurality of light emitting elements 23 into a predetermined wavelength by the conversion material 91 contained in the wavelength converter 90 and emits the light.

The wavelength converter 90 is, for example, a molded product of resin containing yellow phosphor particles as the conversion material 91 .

As the phosphor-containing resin as a material of the wavelength converter 90 , for example, a phosphor-containing resin in which YAG-based yellow phosphor particles are dispersed in a silicone resin can be used.

That is, when the light emitting element 23 has a blue LED chip, the yellow phosphor particles are excited by the blue light of the blue LED chip to emit yellow light. Therefore, white light generated by mixing the excited yellow light with the blue light of the blue LED chip is emitted from the wavelength converter 90 . That is, the wavelength of light emitted from the LED module 20 is converted to a predetermined wavelength by the conversion material 91 included in the wavelength conversion body 90 .

In addition, by changing the combination of the light emission color of the LED chip included in the light emitting element 23, and the type and concentration of the phosphor contained in the wavelength converter 90, it is possible to change the color, brightness, etc. of the light emitted from the wavelength converter 90. .

In addition, although it is shown in FIG. 16 that the wavelength conversion body 90 is arranged to cover the entire support member 40 and the LED module 20, for example, it may be provided on the wavelength conversion body 90 in consideration of heat radiation efficiency. more than one hole.

In addition, the wavelength converter 90 does not need to be fixed to the base 50 . For example, the wavelength converter 90 may cover the plurality of light emitting elements 23 in a state of being fixed to the substrate 21 .

In addition, the wavelength converter 90 does not need to be made of resin. The wavelength converter 90 may be realized, for example, as a member made of glass in which a coating including a conversion material 91 such as a phosphor is formed on the inside or outside.

As described above, the light bulb-shaped lamp 1a according to the present embodiment includes the wavelength conversion body 90 for converting the wavelength of light from the plurality of light emitting elements 23 into a predetermined wavelength, and has the same light bulb shape as the light bulb according to the above-mentioned first embodiment. Shaped lamp 1 common feature.

Specifically, the light bulb-shaped lamp 1a includes at least two light emitting elements 23 whose orientations are different from each other, and the ratio of the contact area between the support member 40 and the substrate 21 with respect to the area of the substrate 21 is the same as that of the first embodiment. , is more than 5%.

Therefore, the light bulb-shaped lamp 1a can emit light in multiple directions while suppressing reduction in luminous efficiency due to heat generated by each of the plurality of light-emitting elements 23 when emitting light.

That is, the lightbulb-shaped lamp 1a according to Embodiment 2 is a light source for illumination having excellent light distribution characteristics.

In addition, the light bulb-shaped lamp 1a may employ a light emitting device other than the LED module 20 shown in FIG. 16 as a light emitting device. For example, any of the LED modules ( 120 to 122 , 125 to 129 ) according to Modifications 1 to 8 of Embodiment 1 may be included in the light bulb-shaped lamp 1 a as a light emitting device.

(Embodiment 3)

Next, the lightbulb-shaped lamp 2 which concerns on Embodiment 3 is demonstrated centering on the difference from the lightbulb-shaped lamp 1 which concerns on Embodiment 1 mentioned above. That is, in the following description, the description of components such as the light emitting element 22 already described may be omitted. FIG. 17 is an external perspective view of a light bulb-shaped lamp 2 according to Embodiment 3 of the present invention.

As shown in FIG. 17 , the bulb-shaped lamp 2 is a bulb-shaped lamp that replaces an incandescent lamp, and includes a globe 15 , an LED module 120 as a light source, a support member 140 , a base 52 , a resin case 63 , and a base 32 .

The LED module 120 is fixed to the support member 140 to be arranged inside the glove 15 .

That is, the lightbulb-shaped lamp 2 is a lamp having the same CMT structure as the lightbulb-shaped lamp 1 according to the first embodiment.

In addition, although not shown in FIG. 17 , a drive circuit similar to the drive circuit 80 included in the light bulb-shaped lamp 1 according to Embodiment 1 described above is provided in the resin case 63 . That is, the AC power supplied from the base 32 is converted into DC power by the drive circuit, and the converted DC power is supplied to the LED module 120 through the two lead wires 72a and 72b.

In addition, the glove 15 is a translucent cover covering the LED module 120, and is configured to be able to take out the light emitted from the LED module 120 to the outside of the lamp. Therefore, the light of the LED module 120 incident on the inner surface of the glove 15 passes through the glove 15 and is extracted to the outside of the glove 15 .

Here, the shape of the globe of the lightbulb-shaped lamp 2 according to Embodiment 3 is greatly different from that of the lightbulb-shaped lamp 1 according to Embodiment 1.

That is, the shape of the glove 10 included in the lightbulb-shaped lamp 1 is spherical as a whole, while the shape of the glove 15 of the lightbulb-shaped lamp 2 is a direction perpendicular to the opening surface of the opening connected to the resin case 63. Slender on top.

Specifically, the glove 15 is in the shape of a candle (C-shape defined by JIS (Japanese Industrial Standard) C7710), and the glove 15 has a vertically long and slightly conical surface formed on its outer surface.

However, the light bulb-shaped lamp 2 includes the LED module 120 and the support member 140 according to Modification 1 of Embodiment 1 described above as a light emitting device. Therefore, in the lightbulb-shaped lamp 2 according to Embodiment 3, it is possible to realize a large light distribution angle by the plurality of light emitting elements 22 and suppress light emission due to heat emitted by the plurality of light emitting elements 22 during light emission. Reduced efficiency.

That is, the lightbulb-shaped lamp 2 according to Embodiment 3 is, like the lightbulb-shaped lamp 1 according to Embodiment 1, a light source for illumination capable of obtaining excellent light distribution characteristics.

Furthermore, in the present embodiment, the LED module 120 according to Modification 1 of Embodiment 1 is employed as the light emitting device included in the light bulb-shaped lamp 2 . However, the light emitting device included in the bulb-shaped lamp 2 is not limited thereto, for example, any one of the LED modules (20, 121, 122, 125 to 129) involved in Embodiment 1 or its modified examples 2 to 7, It may also be provided in the bulb-shaped lamp 2 .

In addition, the glove 15 does not need to be transparent to visible light, and the glove 15 may have a light diffusion function. That is, a diffuser that diffuses light from the LED module 120 may be formed on the inner surface of the glove 15 .

Furthermore, the material of the glove 15 is not limited to the glass material, and a resin material made of synthetic resin such as acrylic or polycarbonate may be used.

Further, the lightbulb-shaped lamp 2 may include the light-emitting element 23 having the sealing member 22c containing phosphor particles, and may also include the wavelength converter 90, similarly to the lightbulb-shaped lamp 1a according to Embodiment 2.

Moreover, in this invention, it can realize not only as the above-mentioned lightbulb-shaped lamp 1, 1a, or 2 but also as the lighting apparatus provided with the lightbulb-shaped lamp 1, 1a, or 2. Therefore, as Embodiments 4 and 5, a lighting device including the light bulb-shaped lamp 1, 1a, or 2 will be described.

(Embodiment 4)

The illuminating device 8 which concerns on Embodiment 4 of this invention is demonstrated using FIG. 18. FIG. FIG. 18 is a schematic cross-sectional view of an illuminating device 8 according to Embodiment 4 of the present invention.

As shown in FIG. 18 , the lighting device 8 according to Embodiment 4 is mounted on, for example, an indoor ceiling. The lighting device 8 includes the light bulb-shaped lamp 1 and the lighting fixture 3 according to Embodiment 1 described above.

The lighting fixture 3 is used for extinguishing and lighting the lightbulb-shaped lamp 1 , and includes a fixture main body 4 attached to the ceiling and a translucent lamp cover 5 that covers the lightbulb-shaped lamp 1 .

The device body 4 has a lamp socket 4a. The base 30 of the bulb-shaped lamp 1 is screwed into the socket 4a. Electric power is supplied to the light bulb-shaped lamp 1 through this socket 4a.

Moreover, instead of the lightbulb-shaped lamp 1 which concerns on Embodiment 1, the illuminating device 8 may be equipped with the lightbulb-shaped lamp 1a or 2 which concerns on Embodiment 2 or 3. As shown in FIG.

(Embodiment 5)

Next, the illuminating device 9 which concerns on Embodiment 5 of this invention is demonstrated using FIG. 19. FIG. FIG. 19 is an external perspective view of a lighting device 9 according to Embodiment 5 of the present invention.

As shown in FIG. 19 , the lighting device 9 in the present embodiment is a chandelier-type lighting device 9 and includes the light bulb-shaped lamp 2 in the third embodiment.

In addition, the lighting device 9 is not limited to the configuration shown in FIG. 19 . As the illuminating device 9, what is necessary is just to have at least the socket which holds the lightbulb-shaped lamp 2, and supplies electric power to the lightbulb-shaped lamp 2.

Moreover, instead of the lightbulb-shaped lamp 2 which concerns on Embodiment 3, the illuminating device 9 may be equipped with the lightbulb-shaped lamp 1 or 1a which concerns on Embodiment 1 or 2. As shown in FIG.

(Supplementary Explanation of Embodiments 1 to 5)

As mentioned above, although the light bulb-shaped lamp and lighting device which concern on this invention were demonstrated based on Embodiment 1-5, this invention is not limited to these embodiment.

For example, in the above-mentioned Embodiments 1 to 3, the light emitting elements 22 and 23 are regarded as SMD type LED modules, but it is not limited thereto. For example, a COB (Chip On Board: Chip On Board) type LED module in which a bare chip is directly mounted on a substrate may be used in the light bulb-shaped lamps 1, 1a, and 2.

That is, LED chips themselves may be used as the light emitting elements 22 and 23 . That is, each of the first light emitting element and the second light emitting element can be realized as an LED chip mounted on a substrate.

In this case, for example, the wavelength of light from a plurality of LED chips is converted into a predetermined wavelength by arranging a sealing member that collectively or individually seals a plurality of LED chips, and the sealing member may include the above-mentioned Sealing parts for wavelength conversion materials such as yellow phosphors.

Furthermore, as shown in Modifications 4 and 5 of Embodiment 1, a plurality of substrates on which one or more light-emitting elements are respectively disposed may be disposed on the mounting portion 142, 152 and 172.

Furthermore, as shown in Modifications 6 to 8 of Embodiment 1, a flexible substrate in which a plurality of light emitting elements are arranged and bent may be arranged in the mounting portion according to Modifications 1 to 3 of Embodiment 1. 142, 152 and 172.

In addition, the shape of the glove is not limited to the description of Embodiments 1 and 3, and a shape used for a general incandescent lamp can also be adopted. For example, the glove can take a shape such as a G shape or an E shape (JISC7710).

In addition, in Embodiments 1 and 2 described above, although the light-emitting element 22 and the like included in the light-emitting device such as the LED module 20 are configured to emit white light from a blue LED chip and a yellow phosphor, the present invention is not limited thereto. . For example, in order to improve color rendering, a red phosphor and a green phosphor may be mixed in addition to the yellow phosphor.

Furthermore, instead of using a yellow phosphor, a phosphor-containing resin containing a red phosphor or a green phosphor may be employed to emit white light by combining it with a blue LED chip.

Furthermore, for example, the wavelength (color) of light emitted from the main surface 21 a side of the substrate 21 may be different from the wavelength (color) of light emitted from the rear surface 21 b side of the substrate 21 .

Furthermore, in the first to third embodiments described above, LED chips that emit colors other than blue may be used as the LED chips.

For example, when using an LED chip that emits ultraviolet light, phosphor particles of various colors that emit light of three primary colors (red, green, blue) can be used in combination as phosphor particles.

Moreover, wavelength conversion materials other than phosphor particles can also be used. As the wavelength conversion material, for example, materials containing semiconductors, metal complexes, organic dyes, pigments, etc. that can absorb light of a certain wavelength and emit and absorb light can be used. A material that contains light of different wavelengths.

In addition, in the above description, the SMD-type LED element and the LED chip were shown as examples of the light-emitting element. However, other semiconductor light-emitting elements such as semiconductor lasers, solid light-emitting elements such as organic EL (Electro Luminescence: electroluminescence) or inorganic EL can also be used as light-emitting elements included in light-emitting devices such as the LED module 20.

In addition, without departing from the gist of the present invention, various modifications conceivable by those skilled in the art may be implemented in the configurations of the present embodiment and modifications, or components in the embodiments and modifications may be combined. The latter configurations are all included within the scope of the present utility model.

Symbol Description

1, 1a, 2 bulb-shaped lamp (light source for lighting)

3 Lighting fixtures

4 Appliance body

4a lamp holder

5 lamp cover

8, 9 Lighting device

10, 15 spherical cover

11 opening

20, 120, 121, 122, 125, 126, 127, 128, 129 LED modules 21, 25, 26, 27, 28, 110, 111, substrate

21a, 25a, 26a, 27a main face

21b, 25b, 26b, 27b back

22, 23 Light-emitting elements

22a container

22b LED chip

22c Sealing parts

22d wavelength conversion material

25c, 26c extension

28a First substrate

28b, 28c second substrate

30, 32 lamp holder

40, 140, 150, 170, 180 Supporting parts

41, 141, 151, 171, 181 pillars

42, 142, 152, 172, 182, 183 Installation Department

45, 145, 155, 175 End faces

50, 52 Pedestal

60, 63 resin shell

61 The first shell part

62 Second shell part

70a, 70b, 72a, 72b leads

80 drive circuit

90 wavelength conversion body

91 Transform material

110a, 111a the first main surface

110b, 111c second main surface

182a upper surface

182b lower surface

182c side

Claims (15)

1. an illumination light source, is characterized in that,

This illumination light source possesses:

The enclosed globe shade of light transmission;

Support unit, has to the inside of described enclosed globe shade and extends the pillar arranging;

Substrate, is supported by described support unit, thereby is configured in described enclosed globe shade; And

Be configured in the first light-emitting component and second light-emitting component of described substrate,

Described the first light-emitting component, is configured in the interarea of described substrate in the mode of the direction towards a side contrary to described pillar,

Described the second light-emitting component, is configured in described substrate in the mode of the direction towards different from described the first light-emitting component,

Described support unit, supports described substrate with the state contacting with the back side of described substrate, and the back side of described substrate is the face of a side contrary to described interarea,

With respect to the area at the described back side of described substrate, the described support unit ratio shared with the area that the described back side contacts is more than 5%.

2. illumination light source as claimed in claim 1, is characterized in that,

From the described substrate of described interarea one side in the situation that, have at least three described the first light-emitting components to be configured on described substrate in the mode round described pillar.

3. illumination light source as claimed in claim 2, is characterized in that,

Described substrate has at least three extensions, in the direction that these at least three extensions intersect at the direction of principal axis with described pillar, is extended setting, is configured with the first light-emitting component described at least one in each of described at least three extensions.

4. illumination light source as claimed in claim 2, is characterized in that,

At least three described the first light-emitting components are configured on described substrate, and are positioned on the circumference centered by the axle of described pillar.

5. the illumination light source as described in any one of claim 1 to 4, is characterized in that,

Described at least one, the second light-emitting component is configured in the described back side of described substrate.

6. the illumination light source as described in any one of claim 1 to 4, is characterized in that,

Described support unit has the installation portion that described substrate has been installed, and this installation portion is connected with the end in the inside of described enclosed globe shade one side of described pillar,

The second substrate that described substrate has the first substrate of the upper surface that is configured in described installation portion and is configured in the lower surface of described installation portion, the upper surface of described installation portion refers to the face of a side contrary to described pillar, the lower surface of described installation portion refers to the face of described pillar one side

Described the first light-emitting component is configured in described first substrate,

Described the second light-emitting component is configured in described second substrate.

7. the illumination light source as described in any one of claim 1 to 4, is characterized in that,

Described support unit has for the installation portion of described substrate is installed, and this installation portion is connected with the end of described pillar in the inside of described enclosed globe shade one side,

The second substrate that described substrate has the first substrate of the upper surface that is configured in described installation portion and is configured in the side of described installation portion, the upper surface of described installation portion refers to the face of a side contrary to described pillar, the side of described installation portion refers to along the face of the direction of intersecting with described upper surface

Described the first light-emitting component is configured in described first substrate,

Described the second light-emitting component is configured in described second substrate.

8. the illumination light source as described in any one of claim 1 to 4, is characterized in that,

Described substrate is supported by described support unit with the state of bending,

The described interarea of described substrate has: along the end face of described support unit and the first interarea being configured and by substrate described in bending, form from described the first interarea towards the second different interareas,

Described the first light-emitting component is configured in described the first interarea,

Described the second light-emitting component is configured in described the second interarea.

9. the illumination light source described in any one of claim 1 to 4, is characterized in that,

Described the first light-emitting component and described the second light-emitting component respectively, the surface attaching type LED element that there is container and be installed in the LED chip in described container.

10. the illumination light source as described in any one of claim 1 to 4, is characterized in that,

Described the first light-emitting component and described the second light-emitting component respectively, are installed in the LED chip on described substrate.

11. illumination light sources as described in any one of claim 1 to 4, is characterized in that,

Described illumination light source also possesses wavelength conversion body, and this wavelength conversion body is the parts of having predetermined shape, and this wavelength conversion body is configured in described enclosed globe shade to cover the mode of described the first light-emitting component and described the second light-emitting component,

Described wavelength conversion body, by the coversion material containing in described wavelength conversion body, will be transformed to the wavelength of regulation and emit from the light wavelength of described the first light-emitting component and described the second light-emitting component incident.

12. illumination light sources as described in any one of claim 1 to 4, is characterized in that,

Described enclosed globe shade is the enclosed globe shade of candle.

13. illumination light sources as described in any one of claim 1 to 4, is characterized in that,

With respect to the area at the described back side of described substrate, the described support unit ratio shared with the area that the described back side contacts is more than 10%.

14. illumination light sources as described in any one of claim 1 to 4, is characterized in that,

With respect to the area at the described back side of described substrate, the described support unit ratio shared with the area that the described back side contacts is more than 25%.

15. 1 kinds of lighting devices, is characterized in that,

Described lighting device possesses:

Illumination light source described in any one of claim 1 to 14.

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