CN203176803U - Light source for illumination and illumination device - Google Patents

Abstract

A light source for illumination comprises a spherical cover (10) provided with a main body part (11) and an opening part (12), an LED module (20) arranged inside the spherical cover (10) in a matched mode, and a frame body (50) provided with a first opening part (50a) used for surrounding the opening part (12) of the spherical cover (10), wherein the spherical cover (10) is connected with the edge of the first opening part (50a) in an abutting mode through part of the spherical cover (10). Therefore, the spherical cover (10) is supported by the frame body (50).

Description

Light source for lighting and lighting device

technical field

The utility model relates to a light source for illumination and a lighting device, in particular to an LED bulb (bulb-shaped lamp) using a light emitting diode (LED: Light Emitting Diode) and a lighting device using the LED bulb.

Background technique

Semiconductor light-emitting elements such as LEDs are expected to be used as light sources for various products due to their small size, high efficiency, and long life. Among them, research and development of LED light bulbs as light sources for lighting such as conventionally known light bulb-shaped fluorescent lamps and incandescent lamps are also progressing (Patent Document 1).

For example, an LED light bulb includes: an LED module as a light source, a spherical cover covering the LED module, a supporting member for supporting the LED module, a drive circuit for supplying power to the LED module, a peripheral frame formed to surround the drive circuit, and a Electric lamp holder.

(Prior art literature)

(patent documents)

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

However, there is a problem in conventional LED bulbs that the relative positional relationship between the LED module (light emitting module) and the globe cover is not uniform among LED bulbs.

Utility model content

In order to solve the above problems, the present invention aims to provide a light source for illumination and an illumination device capable of suppressing non-uniform relative positional relationship between the light emitting module and the spherical cover.

In order to achieve the above object, one embodiment of the light source for illumination according to the present invention includes: a spherical cover having a main body and an opening; a light emitting module arranged in the spherical cover; and a frame body having an opening, the opening of the frame surrounds the opening of the spherical cover; wherein the spherical cover of the light source for illumination abuts against the edge of the opening of the frame through a part of itself, Thus, the glove is supported by the frame.

Furthermore, in one embodiment of the light source for illumination according to the present invention, the light source for illumination may further include a closing member that closes the opening of the opening of the spherical cover. It is provided that the opening edge of the opening of the spherical cover is not in contact with the blocking member.

In addition, in one embodiment of the light source for illumination according to the present invention, the maximum outer diameter of the main body is larger than the maximum outer diameter of the opening of the spherical cover; the spherical cover has A jaw portion generated by a difference between the maximum outer diameter of the main body portion and the maximum outer diameter of the opening of the glove; the part of the glove supported by the frame is the jaw portion bottom of.

In addition, in one embodiment of the light source for illumination according to the present invention, an adhesive may be provided at least between the outer surface of the opening of the spherical cover and the inner surface of the frame, and For bonding the spherical cover and the frame.

Furthermore, in one embodiment of the light source for illumination according to the present invention, the outer surface of the main body portion of the glove may be the same surface as the outer surface of the housing.

In addition, in one embodiment of the light source for illumination according to the present invention, the light source for illumination may further include a drive circuit for supplying power to the light emitting module; is constructed around the state of the drive circuit.

Moreover, one Embodiment of the illuminating device which concerns on this invention is equipped with any one of the light sources for illumination mentioned above.

According to the present invention, the inhomogeneity of the relative positional relationship between the light emitting module and the spherical cover can be suppressed.

Description of drawings

FIG. 1 is an external perspective view of a light bulb-shaped lamp according to Embodiment 1 of the present invention.

2 is a cross-sectional view of the light bulb-shaped lamp according to Embodiment 1 of the present invention.

3( a ) is a plan view of the LED module in the light bulb-shaped lamp according to Embodiment 1 of the present invention, and FIG. 3( b ) is the LED on the line AA' of FIG. 3( a ). The sectional view of the module, Fig. 3 (c) is the sectional view of the LED module on the BB' line of Fig. 3 (b), Fig. 3 (d) is the CC of Fig. 3 (a) 'A cutaway view of the LED module on the line.

Fig. 4 is a side view of a conventional bulb-shaped lamp.

FIG. 5A is an enlarged cross-sectional view of a region B encircled by a dotted line in FIG. 4 .

FIG. 5B is an enlarged side view of a region B encircled by a dotted line in FIG. 4 .

FIG. 6A is an enlarged cross-sectional view of a region A encircled by a dotted line in FIG. 2 .

FIG. 6B is an enlarged side view of a region A encircled by a dotted line in FIG. 2 .

Fig. 7A is a side view of the light bulb-shaped lamp according to Embodiment 2 of the present invention.

FIG. 7B is an enlarged cross-sectional view of a region C encircled by a dotted line in FIG. 7A .

8A is a side view of the light bulb-shaped lamp according to Embodiment 3 of the present invention.

FIG. 8B is an enlarged cross-sectional view of a region D encircled by a dotted line in FIG. 8A .

Fig. 9 is an external perspective view of a lighting device according to Embodiment 4 of the present invention.

Symbol Description

1, 1A, 101 bulb-shaped lamp;

2 lighting devices;

10, 10A, 110 spherical cover;

10a, 10Ba Jaws;

11, 11B main body;

12, 12B, 112 openings;

20 LED modules;

21 substrate;

22 LEDs;

23 sealing parts;

24 metal wiring;

25 wires;

26a, 26b terminals;

27a, 27b through holes;

30, 30B support;

31, 31B pillar;

32, 32B pedestal;

40 drive circuit;

41 circuit substrate;

42 circuit components;

43a, 43b, 43c, 43d leads;

50 frames;

50a first opening;

50a1 bevel;

50b second opening;

51 peripheral part;

51a protrusion;

51b locking part;

52 connection part;

55 Radiator;

60 lamp caps;

61 Shell;

62 insulation part;

63 contact piece part;

70 circuit cover;

70a flange portion;

80 screws;

90 adhesive;

130 Supporting parts.

Detailed ways

Hereinafter, a light source for illumination and a lighting device according to an embodiment of the present invention will be described with reference to the drawings. In addition, the embodiments described below are all preferred specific examples of the present invention. Therefore, the numerical values, shapes, materials, components, installation positions and connection forms of the components shown in the following embodiments are all examples of the present invention, and the present invention is not limited thereto. Moreover, among the components in the following embodiments, components not described in the independent claims showing the highest concept of the present invention can be described as arbitrary components. In addition, each figure is a schematic figure, and is not a strict illustration. In addition, the same symbols are assigned to the same components in the respective drawings. In the following embodiments, a light bulb-shaped LED lamp (LED light bulb) will be described as an example of a light source for illumination.

(Embodiment 1)

First, the overall structure of the lightbulb-shaped lamp 1 which concerns on Embodiment 1 of this invention is demonstrated using FIG. 1. FIG. FIG. 1 is an external perspective view of a light bulb-shaped lamp according to Embodiment 1 of the present invention.

As shown in FIG. 1 , a lightbulb-shaped lamp 1 is a lightbulb-shaped lamp used as a substitute for an incandescent lamp. 50, and lamp holder 60. The lightbulb-shaped lamp 1 in this embodiment comprises a glove 10 , a frame body 50 , and a base 60 to form an enclosure.

Next, each component of the light bulb-shaped lamp 1 will be described using FIG. 2 with reference to FIG. 1 . 2 is a cross-sectional view of the light bulb-shaped lamp according to Embodiment 1 of the present invention. In addition, the dashed-dotted line drawn along the paper plane vertical direction in FIG. 2 represents the lamp axis J (central axis) of the bulb-shaped lamp, and in this embodiment, the lamp axis J coincides with the globe axis. Furthermore, the lamp axis J is an axis serving as the center of rotation when the light bulb-shaped lamp 1 is attached to a socket of a lighting device (not shown), and coincides with the rotation axis of the base 60 .

[dome cover]

As shown in FIGS. 1 and 2 , the glove 10 is a translucent cover that covers the LED module 20 and can take out the light emitted from the LED module 20 to the outside of the lamp. Therefore, the light of the LED module 20 incident on the inner surface of the glove 10 is taken out to the outside of the glove 10 through the glove 10 .

The glove 10 is a hollow member having an opening, and the glove 10 has a closed top portion opposite to the opening. The glove 10 is, for example, a rotating body with the lamp axis J as its axis. The glove 10 in this embodiment has an elongated shape in a direction perpendicular to the opening surface of the opening 12 (the direction of the lamp axis J). Specifically, the glove 10 has a candle shape (C-shape defined by JIS (Japanese Industrial Standard) C7710), and the outer surface of the glove 10 is a vertically elongated slightly conical surface.

The structure of the glove 10 includes: a main body (globe main body) 11 exposed outside and visible from the outside; to the opening (globe opening) 12. The LED module 20 is installed at a predetermined position in the main body 11 .

The maximum outer diameter of the main body portion 11 is larger than the maximum outer diameter of the opening portion 12 . That is, the outer diameter of the opening portion 12 is narrower than that of the main body portion 11 . The glove 10 is provided with a jaw portion 10 a due to the maximum outer diameter difference between the main body portion 11 and the opening portion 12 . This jaw part 10a is provided in the connection part of the main-body part 11 and the opening part 12, and is designed in the shape of a step in this embodiment.

The bottom (surface on the base side) of the jaw 10 a abuts against the edge of the first opening 50 a of the frame 50 . The glove 10 is supported by the frame body 50 by placing its jaw portion 10 a on the edge of the first opening portion 50 a of the frame body 50 . In addition, the opening edge of the opening 12 does not contact any one of the support 30 , the frame body 50 and the circuit cover 70 , and the opening 12 is in a floating state. As shown in FIG. 2 , an adhesive 90 such as silicone resin is applied between the outer surface of the opening 12 and the inner surface of the frame body 50 . In this way, the glove 10 and the frame body 50 are fixed.

The globe 10 is a glass bulb (transparent bulb) made of transparent silica glass that is transparent to visible light. Therefore, the LED module 20 housed in the glove 10 can be visually observed from the outside of the glove 10 .

In addition, the material of the glove 10 is not limited to glass, and a resin material such as acrylic (PMMA) or polycarbonate (PC) may be used. Also, the glove 10 does not need to be transparent, as long as the glove 10 has a light diffusing function. For example, a milky-white light-diffusing film can also be formed by applying a resin containing a light-diffusing material such as silica or calcium carbonate, or a white pigment to the entire inner or outer surface of the glove 10 . In this way, by giving the glove 10 a light diffusing function, the light incident on the glove 10 from the LED module 20 can be diffused, and thus the light distribution angle of the lamp can be widened.

[LED module]

The LED module 20 is a light emitting module having a light emitting element, and can emit light of a predetermined color (wavelength) such as white. The LED module 20 arranged in the glove 10 is held in the space in the glove 10 by the holder 30 , and emits light by power supplied from the drive circuit 40 through the lead wires 43 a and 43 b.

Thus, in the lightbulb-shaped lamp 1 of this embodiment, the structure which arrange|positions the LED module 20 in the space center in the globe 10 is adopted (CMT: Center Mount Technology (Center Mount Technology)).

In addition, the LED module 20 in this embodiment has an elongated shape, and is arranged such that its longitudinal direction is perpendicular to the axis of the support 31 (lamp axis J). Specifically, the elongated substrate 21 is supported by the pillar 31 in a state where its longitudinal direction is perpendicular to the axial direction of the pillar 31 .

As shown in FIG. 2 , although the LED module 20 is disposed between the center G _CNT of the glove 10 and the apex G _TOP of the glove 10 , it is not limited thereto. The position of the LED module 20 can be adjusted according to the required light distribution characteristics. For example, the LED module 20 can be arranged at the center G _CNT of the spherical cover 10 , or it can be arranged at the side closer to the lamp head than the center G _CNT of the spherical cover 10 . In addition, the position (height) of the LED module 20 can be adjusted by changing the height of the pillar 31 .

Here, the detailed structure of the LED module 20 is demonstrated using FIG. 3. FIG. 3( a ) is a plan view of the LED module in the light bulb-shaped lamp according to Embodiment 1 of the present invention, and FIG. 3( b ) is the LED at the line AA' of FIG. 3( a ). Sectional view of the module. (c) of Fig. 3 is a sectional view of the LED module at the BB' line of Fig. 3 (a), and Fig. 3 (d) is the sectional view of the LED module at the line CC' of Fig. Cutaway view of the LED module.

As shown in (a) to (d) of FIG. 3, the LED module 20 has the board|substrate 21, LED22, the sealing member 23, the metal wiring 24, the lead wire 25, and terminal 26a and 26b. The LED module 20 in this embodiment has a COB (Chip On Board: chip on board) structure in which a bare chip is directly mounted on a substrate 21 . Hereinafter, each component of the LED module 20 will be described in detail.

First, the substrate 21 will be described. The board|substrate 21 is a mounting board|substrate for mounting LED22, and has the 1st main surface (front surface) which is a surface on which LED22 is mounted, and the 2nd main surface (back surface) which opposes this 1st main surface. As shown in (a) of FIG. 3 , for example, the substrate 21 is a rectangular plate-shaped substrate when viewed from above (viewed from the vertex G _TOP of the glove 10 ). In addition, the shape of the substrate 21 may be a square or a circle other than the rectangle. In addition, polygons other than tetragons such as hexagons and octagons may be used.

Furthermore, the substrate 21 is a translucent substrate having translucency with respect to visible light. As the substrate 21, it is preferable to use a material with a high total transmittance for visible light. By using such a translucent substrate, light from LED 22 and light whose wavelength has been converted by sealing member 23 can pass through substrate 21 and be emitted from the surface (second main surface) on which LED 22 is not mounted. Thereby, even when LED22 is mounted only in the 1st main surface of the board|substrate 21, white light can be emitted from the 2nd main surface. Therefore, it is possible to easily emit light in all directions centering on the LED module 20 .

As the translucent substrate, for example, a substrate having a total transmittance of 80% or more for visible light, or a transparent substrate for visible light (that is, a state in which the transmittance is very high and can be seen from the opposite side) can be used. As such a translucent substrate, a translucent ceramic substrate composed of polycrystalline alumina or aluminum nitride, a transparent glass substrate composed of glass, a crystal substrate composed of crystal, and a sapphire substrate composed of sapphire can be used. , A resin substrate or a flexible substrate made of a resin material. Specifically, a rectangular polycrystalline alumina substrate having a total transmittance of 96% can be used.

The second main surface of the substrate 21 is connected to the holder 30 in surface contact with the fixed surface of the holder 30 (pillar 31 ). In addition, two through-holes 27a and 27b are provided in the substrate 21 for electrically connecting to the two lead wires 43a and 43b. The tip portion of the lead wire 43a ( 43b ) penetrates through the through hole 27a ( 27b ) and is soldered to the terminal 26a ( 26b ) formed on the substrate 21 .

Next, LED22 is demonstrated. LED22 is an example of a light emitting element, and is a semiconductor light emitting element that emits light with predetermined electric power. Each LED 22 is a bare chip emitting monochromatic visible light. In this embodiment, a blue light-emitting LED chip that emits blue light when energized is used. As the blue LED chip, for example, a gallium nitride-based semiconductor light-emitting element with a central wavelength of 440 nm to 470 nm, which is made of an InGaN-based material, can be used.

Moreover, LED22 is mounted only in the 1st main surface of the board|substrate 21, and is mounted in the state arranged in multiple rows along the longitudinal direction of the board|substrate 21, and is mounted. In this embodiment, they are arranged in two rows to form two element rows.

In addition, the number of LEDs 22 to be mounted can be appropriately changed according to the application of the bulb-shaped lamp. For example, one LED 22 may be used instead of a low-power LED lamp such as a micro light bulb. Moreover, you may increase or decrease the number of mounting of LED22 in one element row. In addition, the element rows of LED22 may not necessarily be two rows, but may be one row.

Next, the sealing member 23 will be described. The sealing member 23 is made of resin, for example, and covers LED22. The sealing member 23 is formed so as to seal the whole every row of some LED22. In this embodiment, since the element rows of LED22 are provided in two rows, the sealing member 23 is formed in two rows. Each of the two sealing members 23 is provided linearly on the first main surface of the substrate 21 along the arrangement direction (column direction) of the plurality of LEDs 22 . The sealing member 23 is mainly composed of a translucent material, and when it is necessary to convert the wavelength of the light of the LED 22 to a predetermined wavelength, a wavelength conversion material may be mixed into the translucent material.

The sealing member 23 in this embodiment contains the phosphor as a wavelength conversion material, and is a wavelength conversion member which converts the wavelength (color) of the light which LED22 emits. As such a sealing member 23 , for example, it can be formed of an insulating resin material (phosphor-containing resin) containing phosphor particles. Phosphor particles are excited by light emitted from LED 22 to emit light of a desired color (wavelength).

As the translucent resin material constituting the sealing member 23, for example, silicone resin can be used. In addition, the light diffusing material may be dispersed in the sealing member 23 . Furthermore, the sealing member 23 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.

As the phosphor particles contained in the sealing member 23, for example, when the LED 22 is a blue light-emitting LED that emits blue light, in order to obtain white light, for example, YAG-based yellow phosphor particles can be used. Accordingly, part of the blue light emitted by the LED 22 is wavelength-converted into yellow light by the yellow phosphor particles contained in the sealing member 23 . 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 from the sealing member 23 as white light. In addition, particles such as silica can be used as the light diffusing material.

The sealing member 23 in this embodiment is a phosphor-containing resin in which predetermined phosphor particles are dispersed in a silicone resin, and can be formed by applying a dispenser to the first main surface of the substrate 21 and curing. In this case, the shape of the section perpendicular to the longitudinal direction of the sealing member 23 is substantially semicircular.

And, in order to carry out wavelength conversion to the light (leakage light) that passes through the substrate 21 and toward the second main surface (back surface), a second wavelength light can also be formed between the LED 22 and the substrate 21 or on the second main surface of the substrate 21. As the second wavelength conversion member, a phosphor film (phosphor layer) such as a sintered body film made of phosphor particles and an inorganic bonding material (binder) such as glass can be used, or a first The sealing member 23 formed on the main surface is the same member. In this way, by further forming the second wavelength conversion member on the second main surface of the substrate 21 , it is also possible to perform wavelength conversion on light transmitted through the substrate 21 and emitted from the second main surface. Accordingly, white light can be emitted from both surfaces of the substrate 21 .

Next, the metal wiring 24 will be described. The metal wiring 24 is a conductive wiring through which a current for emitting light from the LED 22 flows, and is pattern-formed in a predetermined shape on the surface of the substrate 21 . As shown in FIG. 3( a ), metal wiring 24 is formed on the first main surface of substrate 21 . The electric power supplied to the LED module 20 from the lead wires 43 a and 43 b is supplied to each LED 22 through the metal wiring 24 .

The metal wiring 24 is formed so that several LED22 may be connected in series for each element column. For example, the metal wiring 24 is formed in the state scattered between adjacent LED22. And the metal wiring 24 is formed so that each element row may be connected in parallel with each other. Each LED22 is electrically connected to the metal wiring 24 by the wire 25. As shown in FIG. In addition, it is not necessary to scatter the metal wiring 24 between LED22. In this case, LED22 adjacent to each other is wire-bonded between a chip and a chip (chip-to-chip).

Metal wiring 24 is formed, for example, by patterning and printing a metal film made of a metal material. As the metal material of the metal wiring 24, for example, silver (Ag), tungsten (W), copper (Cu), gold (Au), or the like can be used.

And, for the metal wiring 24 exposed from the sealing member 23, except for the terminals 26a and 26b, it is preferable to use a glass film (glass coating film) made of a glass material or a resin film (resin coating film) made of a resin material. )cover. In this way, the insulation of the LED module 20 can be improved, and the reflectance of the surface of the substrate 21 can be improved. The wire 25 is, for example, an electric wire such as a gold wire. As shown in FIG.3(b), the lead wire 25 is connected to LED22 and the metal wiring 24. As shown in FIG.

In addition, in the present embodiment, the lead wire 25 is not exposed from the sealing member 23 , and the entirety of the lead wire 25 is buried in the sealing member 23 . In this way, it is possible to prevent light from being absorbed or reflected due to the exposed wire 25 .

Next, the terminals 26a and 26b will be described. Terminals 26 a and 26 b are external connection terminals for receiving direct current for causing LED 22 to emit light from the outside of LED module 20 . In this embodiment, the terminals 26a and 26b are soldered to the lead wires 43a and 43b.

Terminals 26 a and 26 b are formed on the first main surface of substrate 21 in a predetermined state capable of surrounding through holes 27 a and 27 b. The terminals 26 a and 26 b are formed to be connected to the metal wiring 24 , and are electrically connected to the metal wiring 24 . Furthermore, the same metal material as that of the metal wiring 24 is used for the terminals 26 a and 26 b , and the patterns of the terminals 26 a and 26 b are formed simultaneously with the pattern of the metal wiring 24 .

And the terminals 26a and 26b are the power supply part of the LED module 20, and supply the direct current received from the lead wires 43a and 43b to each LED22 via the metal wiring 24 and the lead wire 25.

[support]

The stand 30 is a supporting member that supports the LED module 20 . Moreover, the holder 30 also functions as a heat radiation member (radiator) for dissipating heat generated in the LED module 20 (LED22). The stand 30 is composed of a pillar 31 and a pedestal 32 .

As shown in FIG. 2 , the strut 31 is an elongated member provided to extend from the vicinity of the opening 12 of the glove 10 toward the inside of the glove 10 . In the present embodiment, the pillar 31 is extended so that its own axis is along the lamp axis J. As shown in FIG. That is, the axis of the pillar 31 is coaxial with the lamp axis J. As shown in FIG.

The pillar 31 functions as a holding member for holding the LED module 20 , the LED module 20 is connected to one end of the pillar 31 , and the other end of the pillar 31 is connected to the pedestal 32 . Specifically, a fixing surface for fixing the substrate 21 of the LED module 20 is formed on the top of the pillar 31 .

Moreover, the support|pillar 31 also functions as a heat radiation member (heat sink) for dissipating the heat which generate|occur|produced in the LED module 20 (LED22). Therefore, the pillar 31 is preferably composed of a metal material mainly composed of aluminum (Al), copper (Cu), or iron (Fe), or a resin material with high thermal conductivity. Therefore, the heat generated in the LED module 20 can be efficiently conducted to the pedestal 32 via the support 31 . In this embodiment, the pillar 31 is formed using aluminum.

The position of the LED module 20 with respect to the glove 10 can be changed by changing the length (height) of the length direction like the support|pillar 31 which has the above-mentioned structure. That is, by changing the height of the pillar 31, the light distribution characteristic of the lightbulb-shaped lamp 1 can be changed.

The pedestal 32 is a supporting member for supporting the pillar 31 . The pillar 31 is fixed to the surface of the pedestal 32 . Furthermore, the pedestal 32 constitutes a closing member together with the circuit cover 70 to close the opening 12 of the glove 10 and the opening of the first opening 50 a of the housing 50 .

A circuit cover 70 is fixed to the back surface of the pedestal 32 , and since the circuit cover 70 is fixed to the frame body 50 , the pedestal 32 (stand 30 ) is also fixed to the frame body 50 .

The pedestal 32 functions as a heat radiation member (radiator) for dissipating heat generated in the LED module 20 (LED 22 ), similarly to the pillar 31 . Therefore, the pedestal 32 is preferably made of a metal material mainly composed of aluminum (Al), copper (Cu), or iron (Fe), or a resin material with high thermal conductivity. In this way, the heat from the pillar 31 can be efficiently conducted to the frame body 50 . In this embodiment, the pedestal 32 is formed using aluminum. In addition, the pillar 31 and the pedestal 32 may be formed separately or integrally.

[Drive circuit]

As shown in FIG. 2 , the drive circuit (circuit unit) 40 is a lighting circuit (power supply circuit) that causes the LED module 20 (LED 22 ) to emit light (lighting), and supplies predetermined power to the LED module 20 . For example, the drive circuit 40 converts the AC power supplied from the base 60 through the pair of lead wires 43c and 43d into DC power, and supplies the DC power to the LED module 20 through the pair of lead wires 43a and 43b. The drive circuit 40 is composed of a circuit board 41 and a plurality of circuit elements (electronic elements) 52 mounted on the circuit board 41 .

The circuit board 41 is a printed circuit board formed by patterning metal wiring, and a plurality of circuit elements 42 mounted on the circuit board 41 are electrically connected to each other. The circuit board 41 is arranged such that its principal surface is perpendicular to the lamp axis J, for example.

The circuit elements 42 are, for example, capacitive elements such as electrolytic capacitors and ceramic capacitors, resistive elements, rectifier circuit elements, coil elements, choke coils (choke transformers), noise filters, semiconductor elements such as diodes, and integrated circuit elements. The circuit element 42 is often mounted on the cap-side main surface of the circuit board 41 .

The drive circuit 40 having the above configuration is housed in the housing 50 . In the present embodiment, the circuit board 41 is placed on the protruding portion 51 a provided on the inner surface of the housing 50 . In addition, in the drive circuit 40, a dimming circuit or a boosting circuit may be appropriately selected and combined.

The drive circuit 40 and the LED module 20 are electrically connected via a pair of lead wires 43a and 43b. Furthermore, the drive circuit 40 and the base 60 are electrically connected via a pair of lead wires 43c and 43d. These four lead wires 43a-43d are alloy copper lead wires, for example, and are comprised by the core wire and the insulating resin coating which covers this core wire, and the said core wire is comprised by alloy copper.

In this embodiment, the lead wire 43a is a wire (positive output terminal wire) for supplying a positive voltage from the drive circuit 40 to the LED module 20, and the lead wire 43b is a wire for supplying a negative voltage from the drive circuit 40 to the LED module 20 ( Negative output terminal wire). The lead wires 43a and 43b pass through the through holes provided in the base 32, and are led out to the LED module side (inside the glove 10).

And one end (core wire) of lead wire 43a (43b) penetrates through hole 27a (27b) of board|substrate 21 of LED module 20, and is soldered to terminal 26a and 26b. Further, the other ends (core wires) of the lead wires 43 a and 43 b are soldered to the metal wiring of the circuit board 41 .

Furthermore, the lead wires 43c and 43d are electric wires for supplying electric power for lighting the LED module 20 from the base 60 to the drive circuit 40 . One end (core wire) of each of the lead wires 43c and 43d is electrically connected to the lamp cap 60 (shell portion 61 or contact piece portion 63), and the other end (core wire) is connected to the power input portion (metal wiring) of the circuit board 41 by soldering or the like. electrical connection.

[framework]

As shown in FIG. 2 , the housing 50 is not only a circuit case for accommodating the drive circuit 40 but also a peripheral member constituting the periphery of the light bulb-shaped lamp 1 . Therefore, the frame body 50 is preferably made of an insulating material, and can be made of, for example, an insulating resin material such as polybutylene terephthalate (PBT).

Furthermore, the frame body 50 has a cylindrical shape and has a first opening 50a on the globe side and a second opening 50b on the base side. The first opening 50 a is formed to surround the opening 12 of the glove 10 . That is, it is formed in a state where the opening 12 of the glove 10 can be inserted into the first opening 50a. Furthermore, the annular edge of the first opening 50 a is in contact with the bottom of the jaw 10 a of the glove 10 . With this configuration, the glove 10 is supported by the frame body 50 . Furthermore, the inner surface of the first opening 50 a does not contact the outer surface of the opening 12 of the glove 10 , and a gap is designed between the first opening 50 a and the opening 12 .

In addition, in this embodiment, the frame body 50 is constituted by a peripheral portion 51 formed so that its outer surface is exposed to the outside of the lamp (atmosphere) and a connection portion 52 connected to the base 60 . The peripheral portion 51 has a first opening portion 50a, and is formed such that its inner diameter and outer diameter gradually become smaller from the first opening portion 50a toward the second opening portion 50b.

A protruding portion (substrate holding portion) 51 a for placing the circuit board 41 is provided on the inner surface of the peripheral portion 51 . The protruding portion 51 a is provided in multiple places (for example, three places) on the inner surface of the peripheral portion 51 .

Furthermore, a locking portion 51 b for locking the flange portion 70 a of the circuit cover 70 is provided on the inner surface of the peripheral portion 51 . The locking portion 51b is provided at multiple places (for example, three places) on the inner surface of the peripheral portion 51 . The locking portion 51 b can be constituted by, for example, a pair of claw portions, and the circuit cover 70 is held by the frame body 50 by sandwiching the flange portion 70 a between the claw portions.

In addition, the base 60 is externally fitted in the connecting portion 52 . Thus, the second opening 50b of the housing 50 is closed. A screwing portion for screwing the base 60 is formed on the outer peripheral surface of the connection portion 52 , and the base 60 is fixed to the frame body 50 by screwing the base 60 into the connection portion 52 .

[lamp holder]

The base 60 is a power receiving unit for receiving electric power for causing the LED module 20 (LED22) to emit light from the outside of the lamp. The base 60 is attached to, for example, a socket of a lighting fixture. Accordingly, when the light bulb-shaped lamp 1 is turned on, the base 60 can receive electric power from the socket of the lighting fixture. The base 60 is supplied with AC power from, for example, a commercial power supply. In this embodiment, the base 60 receives AC power through two contacts, and the electric power received by the base 60 is input to the power input part of the drive circuit 40 via a pair of lead wires 43c and 43b.

The base 60 is a bottomed cylinder made of metal, and has a case portion 61 whose outer peripheral surface is a male screw, and a contact piece portion 63 attached to the case portion 61 via an insulating portion 62 . A screwing portion for screwing to a socket of a lighting fixture is formed on the outer peripheral surface of the base 60 . Furthermore, a screwing portion for screwing with the connection portion 52 of the frame body 50 is formed on the inner peripheral surface of the base 60 .

The type of the base 60 is not particularly limited, but in this embodiment, a screw-type Edison screw (E-type) base is used. For example, as the base 60, an E14 shape, an E27 shape, etc. are mentioned.

[circuit cover]

The circuit cover 70 is an insulating, slightly bottomed cylindrical member formed in a cover shape. The circuit cover 70 can be comprised using insulating resin materials, such as PBT, etc., for example.

The shape of the upper surface of the circuit cover 70 is formed along the shape of the back surface of the pedestal 32 of the holder 30 . Thus, the circuit cover 70 is fitted into the back side of the pedestal 32 . Moreover, the circuit cover 70 and the support 30 are fastened and fixed by screws 80 .

Furthermore, the circuit cover 70 is provided with a brim-shaped flange portion 70a. The flange portion 70a is formed in a state exposed from the pedestal 32 of the holder 30, and the flange portion 70a is locked by the locking portion 51b provided on the frame body 50 (peripheral portion 51), whereby the circuit cover 70 is fixed. In box 50.

And, in the present embodiment, although the flange portion 70a of the circuit cover 70 and the support 30 are used as closing members to block the opening of the opening 12 of the spherical cover 10, it may be closed only by the support 30. The opening of the opening portion 12 is blocked.

[Characteristic constitution of the present invention]

Hereinafter, the characteristic structure and effect of the lightbulb-shaped lamp 1 which concerns on this embodiment are demonstrated considering the latitude and longitude of this invention. Fig. 4 is a side view of a conventional bulb-shaped lamp. 5A is an enlarged cross-sectional view of a region B circled by a dotted line in FIG. 4 , and FIG. 5B is an enlarged side view of the region B. As shown in FIG.

In the conventional light bulb-shaped lamp 101 shown in FIG. 4 and FIG. 5A , there is a problem that the relative positional relationship between the LED module (not shown) and the glove 110 is not uniform among bulbs.

In view of these problems, the technicians of the present invention have learned through discussion that the reason is that the length of the opening 112 of the spherical cover 110 (the length in the direction of the lamp axis) is not uniform.

That is, in the conventional bulb-shaped lamp 101 , when the position of the glove 110 is defined, the opening 112 of the glove 110 abuts on the surface of the stepped portion of the supporting member 130 as shown in FIG. 5A . At this time, if the length of the opening 112 of the glove 110 is uneven, the position of the glove 110 relative to the supporting member 130 will vary for each light bulb-shaped lamp 101 . In this way, a problem of non-uniformity occurs in the relative relationship between the glove 110 and other components (the LED module, the support member 130 , the housing 50 , etc.).

Especially when the spherical cover 110 is made of glass, the inhomogeneity of the length of the opening 112 in each spherical cover 110 will become very significant, so it can be known that the relative positional relationship between the LED module and the spherical cover 110 Inhomogeneity also increases.

Furthermore, when the relative positional relationship between the glove 110 and the frame body 50 is not uniform, the gap between the glove cover 110 and the frame body 50 may increase. In this case, when using the adhesive 90 to fix the dome cover 110 and the frame body 50, the situation shown in FIG. surface, causing aesthetic problems.

In view of the above-mentioned problems, the technicians of the present invention conceived that when specifying the position of the spherical cover, the spherical cover does not abut against the support member, but makes it abut against the frame. body opening.

Hereinafter, the characteristic structure of the lightbulb-shaped lamp 1 which concerns on Embodiment 1 of this invention is demonstrated in detail using FIG.6A and FIG.6B. FIG. 6A is an enlarged cross-sectional view of a region A circled by a dotted line in FIG. 2 , and FIG. 6B is an enlarged side view of the region A. FIG.

As shown in FIG. 6A , in the lightbulb-shaped lamp 1 of this embodiment, the bottom of the jaw portion 10 a of the glove 10 abuts against the edge of the first opening 50 a of the housing 50 . That is, when specifying the position of the glove 10 , the bottom of the jaw 10 a is not brought into contact with the edge of the first opening 50 a of the frame 50 , instead of the edge of the opening 12 being in contact with the holder 30 .

In addition, the portion of the glove 10 other than the jaw portion 10 a does not come into contact with any other components such as the stand 30 , the housing 50 , and the circuit cover 70 . Therefore, the edge of the opening 12 of the glove 10 is not in contact with the base 30 , but is in an open state, and the opening 12 is suspended in the space region between the frame body 50 and the base 30 .

According to the configuration described above, the position of the glove 10 can be defined by the jaws 10 a even if the length of the opening 12 of the glove 10 is uneven in the lightbulb-shaped lamp 1 according to the present embodiment. Accordingly, it is possible to suppress unevenness in the relative positional relationship between the glove 10 and other components (the LED module 20 , the holder 30 , the housing 50 , and the like). That is, with the above configuration, it is possible to overcome the problem caused by the non-uniform length of the opening 12 of the glove 10 .

In addition, since the bottom of the jaw 10a of the glove 10 abuts against the edge of the first opening 50a of the frame 50, as shown in FIG. 6A , there is no gap between the jaw 10a and the frame 50 . That is, the glove 10 and the housing 50 can be sealed.

Accordingly, as shown in FIGS. 6A and 6B , when the dome cover 10 and the housing 50 are fixed with the adhesive 90 , it is possible to suppress the adhesive 90 from protruding to the surface of the dome cover 10 or the housing 50 . Therefore, it is possible to prevent the appearance of the lightbulb-shaped lamp 1 from being affected by the exposure of the adhesive 90 , thereby achieving a beautiful appearance.

In addition, as shown in FIGS. 6A and 6B , in this embodiment, when the spherical cover 10 is placed on the first opening 50 a of the frame 50 , the outer surface of the main body 11 of the spherical cover 10 and the outer surface of the frame 50 are connected. The outer face is formed to be on one face.

Accordingly, the outline of the entire lightbulb-shaped lamp including the glove 10 and the frame body 50 can be smoothed, thereby realizing a lightbulb-shaped lamp with an elegant appearance.

Furthermore, as shown in FIG. 6A , in the present embodiment, an inclined portion 50a1 is designed on the edge of the first opening portion 50a of the frame body 50 . Specifically, the corner portion on the glove side at the end portion of the first opening portion 50a is chamfered.

In this way, when the spherical cover 10 is placed on the frame body 50, since the position between the jaw portion 10a and the first opening portion 50a of the frame body 50 can be handled well, the contact between the spherical cover 10 and the frame body 50 can be achieved. The accuracy of the alignment position is improved. Therefore, unevenness in the relative positional relationship between the glove 10 and other components (the LED module 20 , the holder 30 , the housing 50 , etc.) can be further suppressed. Furthermore, by designing the inclined portion 50a1, the stress applied to the glove 10 due to the edge (end edge) of the first opening portion 50a of the frame body 50 can be relieved. Accordingly, deformation of the glove 10 can be suppressed, and damage of the glove 10 can be suppressed.

(Embodiment 2)

Next, the light bulb-shaped lamp 1A which concerns on Embodiment 2 of this invention is demonstrated using FIG. 7A and FIG. 7B. 7A is a side view of a light bulb-shaped lamp according to Embodiment 2 of the present invention, and FIG. 7B is an enlarged cross-sectional view of a region C circled by a dotted line in FIG. 7A . The lightbulb-shaped lamp 1A which concerns on this embodiment differs from the lightbulb-shaped lamp 1 which concerns on Embodiment 1 in the structure of a globe.

As shown in FIG. 7A , the shape of the glove 10A in this embodiment is a shape in which the top (tip) of the glove 10 is extended and tapered in addition to the glove 10 of the first embodiment (defined in JIS C7710). CA shape). In addition, although the dome cover 10A is diffused in FIG. 7A , the dome cover 10A may be transparent.

As shown in FIG. 7B , also in the lightbulb-shaped lamp 1A of this embodiment, it has the same characteristic structure as Embodiment 1. As shown in FIG. Therefore, the lightbulb-shaped lamp 1A according to the present embodiment can also obtain the same effect as that of the first embodiment.

(Embodiment 3)

Next, the light bulb-shaped lamp 1B which concerns on Embodiment 3 of this invention is demonstrated using FIG.8A and FIG.8B. 8A is a side view of a light bulb-shaped lamp according to Embodiment 3 of the present invention, and FIG. 8B is an enlarged cross-sectional view of a region D circled by a dotted line in FIG. 8A . The lightbulb-shaped lamp 1B according to the present embodiment differs from the lightbulb-shaped lamp 1 according to Embodiment 1 in the configurations of the glove and the holder.

As shown in FIG. 8B , the glove 10B of this embodiment has a spherical main body 11B and an opening 12B smaller in diameter than the main body 11B. That is to say, as shown in FIG. 8A , the shape of the dome cover 10B is a shape in which a part of the hollow ball extends and narrows from the center of the ball to the distance (A shape specified in JIS C7710), and the distance from the ball An opening 12B is formed at a position far from the center. In this embodiment, the glove 10B is also designed with a main body 11B and a jaw 10Ba of a connection portion to the opening 12B. When the jaw portion 10Ba is viewed in section, the shape of the jaw portion 10Ba has a predetermined curvature.

Furthermore, the support 30B is comprised from the support|pillar 31B and the base 32B. The strut 31B has the same configuration as the strut 31 in the first embodiment. The pedestal 32B is a member for supporting the pillar 31B, and is configured to close the opening 12B of the glove 10B. The pedestal 32B is a disk-shaped member having a stepped portion, and is constituted by a small-diameter portion with a small diameter and a large-diameter portion with a large diameter. The pedestal 32B can be made of metal such as aluminum, similarly to the pillar 31B. In addition, two through-holes for passing the lead wires 43a and 43b are designed in the base 32B.

In this embodiment, a cylindrical heat sink 55 (second housing) is further provided inside the housing 50 (first housing). The heat sink 55 is preferably made of a material with high thermal conductivity, for example, metal such as aluminum. By providing the heat sink 55, heat generated in the LED module 20 can be efficiently dissipated. Furthermore, when using the heat sink 55 made of metal, it is preferable to use an insulating circuit case between the drive circuit 40 and the heat sink 55 .

As shown in FIG. 8B , also in this embodiment, the bottom of the jaw portion 10Ba of the glove 10B abuts against the edge of the first opening portion 50 a of the housing 50 . In this way, similarly to Embodiment 1, even if the length of the opening 12B of the glove 10B is not uniform, it is possible to suppress the discrepancy in the relative positional relationship between the glove 10B and other components (LED module 20 , holder 30B, frame 50 , etc.). uneven. Furthermore, since the adhesive agent 90 can be suppressed from protruding from the surface of the globe 10B or the housing 50, the lightbulb-shaped lamp 1B can be made to have an elegant appearance.

In addition, although the heat sink 55 is provided in this embodiment, it is not necessary to provide the heat sink 55 . In addition, the heat sink 55 and the circuit case may be provided in the first and second embodiments.

(Embodiment 4)

Next, the illuminating device 2 which concerns on Embodiment 4 of this invention is demonstrated using FIG. 9. FIG. Fig. 9 is an external perspective view of a lighting device according to Embodiment 4 of the present invention.

As shown in FIG. 9 , the lighting device 2 of the present embodiment is a chandelier-type lighting device and includes the light bulb-shaped lamp 1 in the first embodiment.

In this way, the present invention can be realized not only as a bulb-shaped lamp, but also as a lighting device equipped with a bulb-shaped lamp.

Moreover, it is not limited to the structure shown in FIG. 9 as an illumination device. What is necessary is just to be provided with the lamp socket for holding the lightbulb-shaped lamp 1 at least as an illuminating device, and supplying electric power to the lightbulb-shaped lamp 1.

(Changes, etc.)

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

For example, the shape of the glove is not limited to the shapes described in Embodiments 1 to 3, and shapes used in general incandescent lamps can also be adopted. For example, shapes such as G-shape and E-shape (JISC7710) can be adopted as the dome cover.

Moreover, in the above-mentioned embodiment, although the support|pillar 31 was provided in the base 30, the support|pillar 31 may not be provided. In this case, for example, the holder 30 is only the pedestal 32 , and the LED module 20 may be mounted and fixed on the surface of the pedestal 32 .

In addition, in the above-mentioned embodiment, the LED module 20 adopts a COB type structure in which an LED chip is directly mounted as a light-emitting element on the substrate 21 , but the present invention is not limited thereto. For example, as a light-emitting element, an SMD-type LED module can also be used. Specifically, a container made of resin with a recess (cavity), an LED chip installed in the recess, and a sealing member (including fluorescent light) sealed in the recess can be used. A package-type LED element (SMD-type LED element) made of bulk resin) is configured by mounting a plurality of such LED elements on a substrate 21 formed of metal wiring.

In addition, in the above-mentioned embodiment, although one substrate is used as the substrate 21 of the LED module 20, two substrates having the LED 22 and the sealing member 23 formed on the surface may be used, and the back surfaces of the substrates may be pasted together. , to form an LED module 20. In this way, a double-sided LED module can be realized.

In addition, in the above-mentioned embodiment, the LED module 20 is configured to emit white light through the blue LED chip and the yellow phosphor, but the present invention is not limited thereto. For example, a red phosphor or a green phosphor may be mixed in addition to the yellow phosphor in order to improve color rendering. In addition, instead of using a yellow phosphor, a phosphor-containing resin containing a red phosphor or a green phosphor may be used to emit white light by combining it with a blue LED chip.

Furthermore, in the above-mentioned embodiment, an LED chip that emits light of a color other than blue may be used as the LED chip. 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-mentioned embodiment, although LED was shown as an example of the light-emitting element, other semiconductor light-emitting elements such as semiconductor lasers, and solid light-emitting elements such as organic EL (ElectroLuminescence: electroluminescence) or inorganic EL may also be used.

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.

The present invention can be used as a substitute for light bulb-shaped lamps such as conventional incandescent lamps, and can be widely used in lighting devices and the like.

Claims (7)

1. A light source for lighting, comprising: The spherical cover has a main body and an opening; a light emitting module configured in the spherical cover; and a frame body having an opening, and the opening portion of the frame body surrounds the opening portion of the spherical cover; The light source for illumination is characterized in that The glove is supported by the frame by abutting a part of the glove itself against the edge of the opening of the frame. 2. The light source for illumination according to claim 1, wherein The light source for illumination further includes a closing member provided to close the opening of the opening of the glove; An opening edge of the opening of the glove does not contact the closing member. 3. The light source for illumination according to claim 1, wherein The maximum outer diameter of the main body part is larger than the maximum outer diameter of the opening part of the spherical cover; The glove has a jaw resulting from a difference between a maximum outer diameter of the body portion and a maximum outer diameter of the opening of the glove; The part of the glove supported by the frame is the bottom of the jaw. 4. The light source for illumination according to claim 1, wherein An adhesive is provided at least between the outer surface of the opening of the spherical cover and the inner surface of the frame for bonding the spherical cover and the frame. 5. The light source for illumination according to claim 1, wherein The outer surface of the main body of the glove is flush with the outer surface of the frame. 6. The light source for illumination according to claim 1, wherein The light source for illumination is further provided with a drive circuit for supplying power to the light emitting module; The housing is configured to surround the drive circuit. 7. A lighting device comprising the light source for lighting according to any one of claims 1 to 6.

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