TWI719280B - Lighting equipment - Google Patents

Abstract

The subject of the present invention is to provide a lighting fixture that can be thinned. The lighting fixture 100 includes a fixture body 106, a substrate 11 placed on the fixture body 106, a plurality of light-emitting elements 20 arranged on the first main surface 11a on the side opposite to the fixture body 106 side of the substrate 11, and fixtures arranged on the substrate 11 The second main surface 11b on the side of the main body 106 is used to supply light-emitting power to the power supply circuit 90 of the plurality of light-emitting elements 20, the appliance installation portion 8 (electrical connection portion) that receives power from an external power source, and the connection appliance device The power supply cable 199 of the installation portion 8 and the power supply circuit 90; one end of the power supply cable 199 is connected to the power supply circuit 90 on the second main surface 11b side, and the other end is connected to the appliance installation portion 8 on the first main surface 11a side.

Description

Lighting fixtures

The present invention relates to a lighting appliance with light-emitting elements such as LED (Light Emitting Diode).

In the past, there has been known, for example, a ceiling lamp, which is a lighting fixture arranged on a ceiling. For example, the conventional ceiling lamp described in Patent Document 1 includes an appliance main body, an appliance installation part for installing the appliance main body on a construction material, a light source substrate and a circuit board supported on the appliance main body. A plurality of light emitting diodes (LED: Light Emitting Diode) are mounted on the light source substrate. The circuit board is mounted with a lighting circuit configured to light each of the plural LEDs.

The circuit board is arranged in a ring on the appliance body to surround the appliance installation part. The light source substrate is arranged in a ring shape on the appliance body to surround the periphery of the circuit substrate. [Prior Technical Document] [Patent Document]

[Patent Document 1] JP 2012-146666 A

[Problems to be Solved by the Invention] When assembling the above-mentioned conventional ceiling lamp, firstly, after positioning the light source substrate and the circuit substrate to the main body of the appliance, respectively, the wiring operation of connecting the light source substrate and the circuit substrate with leads is required. Therefore, it is not easy to improve the assembling efficiency of, for example, the ceiling lamp.

Therefore, it is also considered to realize the light source substrate and the circuit substrate on a single substrate. In this case, since there are elements such as circuit parts, leads of the circuit parts, or solder on the back of the substrate, such storage space is required. The existence of this storage space may be the main reason for the increase in the thickness of the luminaire.

The object of the present invention is to provide a lighting fixture that can be thinned. [Means to Solve the Problem]

In order to achieve the above object, one aspect of the lighting fixture of the present invention includes a fixture body, a substrate placed on the fixture body, a plurality of light-emitting elements arranged on the first principal surface on the opposite side of the fixture body of the substrate, and arranged on The second main surface of the substrate on the main body side of the appliance is used to supply light-emitting power to the power circuit of a plurality of light-emitting elements, an electrical connection portion that receives power from an external power source, and a power cable that connects the electrical connection portion and the power circuit ; One end of the power cable is connected to the power circuit on the second main surface side, and the other end is connected to the electrical connection portion on the first main surface side. [Effect of Invention]

According to the present invention, it is possible to provide a lighting fixture that can be thinned.

[Form to implement invention]

Hereinafter, the embodiment will be described with reference to the drawings. In addition, the embodiment described below shows a specific example of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, etc. shown in the following embodiments are just examples, and do not limit the gist of the present invention. Therefore, regarding the constituent requirements of the following embodiments that are not described in the independent claim that shows the highest concept of the present invention, it will be described with arbitrary constituent requirements.

In addition, each figure is a schematic diagram, and the figure may not be shown strictly. In addition, in each figure, the same reference numerals are attached to substantially the same structures, and repeated descriptions may be omitted or simplified.

(Embodiment) Hereinafter, the lighting fixture 100 of the embodiment will be described.

[Entire structure of lighting fixture] First, referring to FIG. 1, the entire structure of the lighting fixture 100 of the embodiment will be described. Fig. 1 is an exploded perspective view of a lighting fixture 100 according to the embodiment.

As shown in FIG. 1, the lighting fixture 100 of this embodiment is installed on, for example, a ceiling lamp of a ceiling. In addition, the upper side (positive direction of the Z-axis) in FIG. 1 corresponds to the direction of the floor surface (not shown in the figure) facing the ceiling. That is, the lighting fixture 100 of FIG. 1 is displayed in a posture that is opposite to that of normal use.

The lighting fixture 100 of this embodiment includes a fixture body 106, a light emitting module 10, a circuit cover 150, a light source cover 160, a lighting cover 140, and a fixture installation portion 8. Hereinafter, these will be explained in detail.

[Apparatus body] Fig. 2 is a partial cross-sectional view showing the apparatus body 106, the light emitting module 10, the circuit cover 150, and the light source cover 160 of the embodiment. Specifically, FIG. 2 is a cross-sectional view of a cut surface parallel to the YZ plane at a position where the second cover 152 (described later) of the circuit cover 150 is cut.

As shown in Figs. 1 and 2, the appliance body 106 is formed in a disc shape, and is a member made of sheet metal such as aluminum plate or steel plate. The surface on the side where the light-emitting module 10 and the like are arranged on the appliance body 106 is coated with a white paint with high light reflectivity or vapor-deposited with a reflective metal material, for example.

In addition, a circular opening is formed in the central part of the appliance body 106, and an approximately cylindrical support 126 extending from the periphery of the opening to the side of the light-emitting module 10 is formed. The supporting portion 126 is a member formed of, for example, resin, and has a structure that can be fitted with the appliance mounting portion 8. The support portion 126 is formed with a slit-shaped insertion portion 1261 extending from the front end of the support portion 126 in the axial direction. A power cable 199 (refer to FIG. 7 and so on) that is used to electrically connect the appliance installation portion 8 and the light-emitting module 10 is inserted into the insertion portion 1261.

The appliance body 106 has an outermost peripheral portion 1061, an innermost peripheral portion 1062, and an intermediate portion 1063 between the outermost peripheral portion 1061 and the innermost peripheral portion 1062. The outermost peripheral portion 1061, the innermost peripheral portion 1062, and the intermediate portion 1063 are all formed in a three-layer ring shape.

The outermost peripheral portion 1061 has a flat first installation surface portion 1064 and an upright installation portion 1065 erected on the outer periphery of the first installation surface portion 1064, which are formed over the entire circumference. The illumination cover 140 is installed on the first installation surface 1064, and the erected portion 1065 covers the boundary between the first installation surface 1064 and the illumination cover 140 from the side to suppress light leakage.

In the middle portion 1063, a flat second installation surface portion 1066 and a curved plate portion 1067 continuing from the first installation surface portion 1064 to the second installation surface portion 1066 are formed over the entire circumference. The second installation surface portion 1066 is parallel to the first installation surface portion 1064, and is arranged closer to the ceiling than the first installation surface portion 1064 (Z-axis negative direction). The light emitting module 10 is installed on the second installation surface 1066.

The innermost peripheral portion 1062 is a portion adjacent to the supporting portion 126. In the innermost peripheral portion 1062, a receiving recess 1068 having a shape recessed from the second installation surface 1066 is formed. The bottom surface of the accommodating recess 1068 is arranged between the first installation surface portion 1064 and the second installation surface portion 1066 in the Z-axis direction. The accommodating recess 1068 accommodates the circuit components 80 of the light-emitting module 10. In other words, since the circuit component 80 is accommodated in the accommodating recess 1068 that is included between the first installation surface portion 1064 and the second installation surface portion 1066, the entire appliance body 106 can be miniaturized.

[Apparatus Installation Part] The appliance installation part 8 is inserted into the support part 126 of the appliance body 106 to be installed in the support part 126. In addition, the appliance installation portion 8 is detachably installed on a ceiling-side installation member (not shown) installed on the ceiling. In this way, the appliance main body 106 is detachably installed on the ceiling side installation member by the appliance installation part 8 and the appliance main body 106 is detachably installed on the ceiling. In addition, the appliance installation part 8 also performs electrical connection between the ceiling-side installation member and the lighting appliance 100. Specifically, the ceiling-side mounting member is electrically connected to a commercial power source (not shown in the figure) arranged on the back side of the ceiling through a wire (not shown in the figure). By installing the lighting appliance 100 on the ceiling, AC power from a commercial power source can be supplied to the appliance installation part 8 via the ceiling-side installation member. That is, the appliance installation part 8 is an electrical connection part that receives power from an external power source (commercial power source).

[Light-emitting module] FIG. 3 is a plan view of the light-emitting module 10 of the embodiment viewed from the side of the main body 106 of the apparatus. Fig. 4 is a plan view of the light emitting module 10 of the embodiment viewed from the floor side. FIG. 5 is a side view of the light emitting module 10 of the embodiment.

As shown in FIGS. 3 to 5, the light-emitting module 10 has a substrate 11, a plurality of light-emitting elements 20 arranged on the substrate 11, and one or more (a plurality of in this embodiment) circuit components 80 arranged on the substrate 11. Here, the main surface on the side opposite to the appliance body 106 side of the substrate 11 is referred to as the first main surface 11a, and the main surface on the appliance main body 106 side is referred to as the second main surface 11b. That is, the first main surface 11a faces the floor side, and the second main surface 11b faces the ceiling side. Furthermore, plural light emitting elements 20 are arranged on the first main surface 11a, and circuit components 80 are arranged on the second main surface 11b.

The outer shape of the substrate 11 in a plan view (when the substrate 11 is viewed from the thickness direction of the substrate 11) is a rectangle with cut corners, and a circular opening 12 is formed in the center. That is, the substrate 11 has a ring shape. A notch-shaped through hole 121 is formed around the opening 12 through which the power supply cable 199 penetrates the substrate 11. In addition, the shape of the through opening may be any shape as long as the power cable 199 can be penetrated. Other shapes of the through holes can be, for example, hole shapes. In addition, the location of the through hole may not be around the opening 12.

The substrate 11 may be a glass composite substrate such as a CEM3 (Composite epoxy material-3: epoxy composite material) substrate, a resin substrate, a ceramic substrate, or a phenolic paper substrate, or the like.

Each of the plurality of light-emitting elements 20 in this embodiment is, for example, a surface-mounted light-emitting element in which an LED chip is packaged. That is, the mounting structure of the light-emitting module 10 is an SMD (Surface Mount Device) structure in which the LED element packaged by the LED chip is mounted on the substrate 11. The plurality of light-emitting elements 20 are connected to the conductor pattern (metal wiring) provided on the first main surface 11a by reflow soldering. That is, the plurality of light-emitting elements 20 are mounted on the second region 13b of the first main surface 11a of the substrate 11 by the surface mounting technology. Specifically, a plurality of mounting positions on the first main surface 11a of the substrate 11 (a position where the light-emitting elements 20 should be placed) is coated with cream solder (also referred to as "solder paste"), and the plurality of light-emitting elements 20 It is configured to be in contact with each solder. After that, through a process of applying heat (heating process), etc., each light-emitting element 20 is connected to the metal wiring provided on the first main surface 11a. In this way, the plurality of light-emitting elements 20 are soldered to the substrate 11 in a reflow method.

In addition, among the plurality of light-emitting elements 20 included in the light-emitting module 10, at least one (one in this embodiment) is a night light light-emitting element 20a, and the other plural light-emitting elements 20b are lighting light-emitting elements 20b. The light-emitting element 20a for night light is, for example, an LED element whose brightness and color temperature can be lower than that of the light-emitting element 20b for illumination. That is, the light-emitting element 20a for night light may be a light-emitting element having characteristics of brightness and color temperature lower than that of the light-emitting element 20b for illumination. A light-emitting element with a low light-emitting element 20b for lighting.

In addition, in this embodiment, as shown in FIG. 4, the first area 13a, which is the area of the central portion (peripheral portion of the opening portion 12) when the second main surface 11b of the substrate 11 is viewed in plan, is provided with a night light emitting device. Element 20a.

The light-emitting element 20b for lighting is an LED element used for general lighting. The plural light-emitting elements 20b for illumination include, for example, plural kinds of light-emitting elements 20 having different color temperatures.

For example, the plurality of light-emitting elements 20b for illumination may be composed of a group of light-emitting elements 20b with a high color temperature (first group) and a group of light-emitting elements 20b with a low color temperature (second group). At this time, it is also possible to adjust the brightness of each of the light-emitting elements 20b of the first group and the light-emitting elements 20b of the second group, that is, dimming control, to adjust the color of the illuminating light emitted by the light-emitting module 10, that is, Toning control.

Furthermore, in this embodiment, as shown in FIG. 4, a plurality of light-emitting elements 20b for illumination are arranged in the second area 13b, which is the area outside the first area 13a of the first main surface 11a of the substrate 11.

As shown in FIG. 4, the plurality of light-emitting elements 20b are arranged in a ring-shaped manner to surround the first region 13a of the substrate 11. In addition, the electrical connection mode of the plurality of light-emitting elements 20b is not particularly limited as long as it is independent of the light-emitting element 20a for night light. For example, it is also possible to form a plurality of groups of n (n is an integer greater than or equal to 2) light-emitting elements 20b in series (light-emitting element groups), and connect the plurality of light-emitting element groups in parallel. In addition, all the light-emitting elements 20b arranged on the substrate 11 may also be connected in series. Furthermore, in this embodiment, a plurality of light-emitting elements 20 constitute the light-emitting portion 25 of the light-emitting module 10.

As shown in FIG. 3, the 1st area|region 13a of the 2nd main surface 11b of the board|substrate 11 is an area|region where one or more circuit components 80 are arrange|positioned. The one or more circuit components 80 constitute at least a part of the circuit used for the operation of the light emitting unit 25 (turning on, off, changing the dimming rate, etc.). The height of one or more circuit components 80 is higher than that of the light-emitting element 20. Here, the “height” refers to the height (the length in the Z-axis direction) from the substrate 11 when it is installed on the substrate 11. In addition, the height of the circuit components 80 disposed on the second main surface 11b may not be higher than that of the light-emitting element 20.

In this embodiment, a plurality of circuit components 80 are arranged in the first region 13a of the second main surface 11b, and the plurality of circuit components 80 constitute a power supply circuit 90 that supplies light-emitting power to the light-emitting unit 25. The power supply circuit 90 is connected to the appliance installation part 8 by a power supply cable 199. In addition, this "connection" includes electrical connection and mechanical connection. Thereby, AC power from a commercial power source can be supplied to the power supply circuit 90 via the appliance installation part 8 and the power cable 199. Since the power supply circuit 90 converts AC power into DC power suitable for the light emission of the light-emitting unit 25 and supplies it, the light-emitting unit 25 can emit light.

Specifically, the power cable 199 is arranged in the through hole 121 of the substrate 11 and the insertion portion 1261 of the support portion 126, one end is connected to the power circuit 90, and the other end is connected to the appliance installation portion 8. The other end of the power cable 199 is provided with a connector (not shown) that can be detached from the appliance installation portion 8. Moreover, as shown in FIG. 5, one end part of the power supply cable 199 is arrange|positioned at the side of the 2nd main surface 11b, and the other end part is arrange|positioned at the side of the 1st main surface 11a. Thereby, the power cable 199 is superimposed on the substrate 11 when viewed from the side, and the installation space of the power cable 199 in the height direction (Z-axis direction) can be reduced by the thickness of the substrate 11.

The plural circuit components 80 constituting the power supply circuit 90 are capacitive elements such as electrolytic capacitors or ceramic capacitors, resistive elements, coil elements, choke coils (chance transformers), noise filters, and diodes or integrated circuit elements, respectively. And other semiconductor components.

In this embodiment, only the first main surface 11a is provided with patterned metal wiring (not shown in the figure), and the plurality of circuit components 80 are connected to the metal wiring in a fluid manner by welding. Therefore, the plurality of circuit components 80 arranged on the second main surface 11b are lead components (radial lead components or axial lead components) of a lead-insertion mounting type. The lead of each circuit component 80 on the second main surface 11b penetrates the substrate 11 and is connected to the metal wiring of the first main surface 11a by solder. Specifically, the lead of the circuit component 80 is inserted into the substrate 11 from the second main surface 11b side, and the lead protruding from the first main surface 11a is immersed in the melted solder, thereby connecting the circuit component 80 with the Metal wiring on the first main surface 11a. In this way, when a plurality of lead inserts and mounting type circuit parts 80 are gathered on the second main surface 11b, the lead wires of the circuit parts 80 and the metal wiring of the first main surface 11a can be connected together by welding in a flow method.

In addition, although not shown in the figure, surface mount circuit components are also mounted on the first area 13a of the first main surface 11a.

In addition, the boundary between the first area 13a and the second area 13b shown as a chain line in FIGS. 3 and 4 does not need to be displayed on the substrate 11 so that it can be visually recognized, and the shape does not need to be a shape that follows the outer shape of the substrate 11. . For example, it is also possible to define the boundary between the first area 13a and the second area 13b by an imaginary line circumscribing the power supply circuit 90 constituted by a plurality of circuit components 80 in a plan view.

[Circuit Cover] FIG. 6 is an exploded perspective view showing the light emitting module 10, the circuit cover 150, and the light source cover 160 of the embodiment. FIG. 7 is a partial cross-sectional view of the appliance body 106, the light-emitting module 10, the circuit cover 150, and the light source cover 160 of the embodiment. Figure 7 is a cross-sectional view of a cut plane parallel to the YZ plane.

As shown in FIGS. 6 and 7, the circuit cover 150 is a member that covers the first region 13a of the substrate 11 where the power supply circuit 90 is provided from the side of the first main surface 11a. The circuit cover 150 has a first cover 151 and a second cover 152 which are integrally mounted on the substrate 11.

The first cover 151 is a member that covers the area other than the area near the light emitting element 20a for the night light in the first area 13a. Specifically, the first cover 151 is formed in a ring shape in which a part of the slit is cut when viewed in a plan view. The second cover 152 is fitted into this cutout 1515. An opening 1511 is formed in the center of the first cover 151, and the supporting portion 126 is embedded in the opening 1511. The lid portion 1512 on the outer periphery of the opening 1511 of the first lid 151 is formed as a hollow portion, which substantially covers the first region 13a of the substrate 11. In addition, the cover 1512 is formed in a tapered shape gradually toward the ceiling side (the negative side in the Z-axis direction) from the opening 1511 toward the outer periphery. The cover 1512 covers the welding part of the circuit component 80, the power cable 199, and the like. The cover 1512 is opposed to the receiving recess 1068 of the appliance body 106 with the substrate 11 interposed therebetween. Furthermore, a fixing portion 1513 that is fixed to the substrate 11 with a plurality of screws (not shown in the figure) is formed on the outer peripheral side of the cover portion 1512 of the first cover 151. The above-mentioned notch part 1515 is formed in the fixing part 1513 and the cover part 1512.

In this embodiment, the first cover 151 is formed of metal such as iron or aluminum, and is non-flammable. In addition, the portion forming the outer side surface of the first cover 151 has a function of a reflective surface that reflects the light emitted from the light emitting portion 25.

The second cover 152 is a member that surrounds the night light emitting element 20a. The second cover 152 is formed of flame-retardant resin. Specifically, the second cover 152 has a base portion 1521 and a wall portion 1522. The base portion 1521 is formed in a flat plate shape and is arranged in parallel to the substrate 11. The base portion 1521 has a shape that can be fitted into the cutout portion 1515 of the first cover 151 in a plan view. Furthermore, an opening 1523 having a circular shape in plan view for exposing the night light emitting element 20a is formed in the base portion 1521.

The wall portion 1522 is erected on three sides other than one side on the outer side of the base portion 1521. The wall portion 1522 is erected to be along the cut portion 1515 of the cover portion 1512 and block the cut portion 1515. That is, the light emitted from the light emitting part 25 is prevented from entering the first cover 151 from the cutout part 1515.

Here, the case where the first cover 151 is made of metal and the second cover 152 is made of resin is exemplified. However, the first cover 151 may be made of resin and the second cover 152 may be made of metal. In addition, the first cover 151 and the second cover 152 may both be made of metal, or both may be made of resin.

In addition, an insulating sheet made of resin, for example, may be arranged inside the circuit cover 150. Thereby, the inner surface of the circuit cover 150 can be made close to the circuit components 80 inside the circuit cover 150, and as a result, the miniaturization of the circuit cover 150 can be achieved.

[Light source cover] As shown in FIGS. 6 and 2, the light source cover 160 is a member that covers the plurality of light-emitting elements 20 of the light-emitting module 10, and is formed of light-transmitting (for example, transparent) resin or the like. The light source cover 160 is formed in a ring shape and is fixed to the first main surface 11 a of the light emitting module 10 in a state of surrounding the circuit cover 150 and covering the plurality of light emitting elements 20 arranged in a ring shape. Specifically, the light source cover 160 has a first light-transmitting cover 161 and a second light-transmitting cover 162 that are integrated. The first light-transmitting cover covers the plurality of lighting light-emitting elements 20b on the first main surface 11a side. The light-transmitting cover covers the night light emitting element 20a on the first main surface side 11a.

The first translucent cover 161 is a ring-shaped part of the light source cover 160 and has a plurality of lenses 1611. The plural lenses 1611 are provided in one-to-one correspondence with the plural light-emitting elements 20b. The lens 1611 can expand, for example, the light distribution angle of the light from the corresponding light emitting element 20b. That is, the lens 1611 has a function of diverging light. In this way, by arranging the lens 1611 corresponding to each light-emitting element 20b, it is possible to precisely control the diffusion of light from each of the plurality of light-emitting elements 20b, for example.

The second light-transmitting cover 162 is a part protruding inward from the inner edge of the first light-transmitting cover 161. The second light-transmitting cover 162 is arranged to face the base portion 1521 of the second cover 152 to cover the night light emitting element 20a. The second translucent cover 162 has a lens 1621, and can expand the light distribution angle of the light from the night light emitting element 20a. That is, the lens 1621 has a function of diverging light.

In addition, the first transparent cover 161 and the second transparent cover 162 may not have the lenses 1611 and 1621. In addition, a light-diffusing material (for example, milky white resin) may be used to form the entire light source cover 160. At this time, the light diffusive material may be used to form the entire light source cover 160, or the light diffusive material may be used to form one of the first transparent cover 161 and the second transparent cover 162, and a lens may be formed on the other. In addition, the first light-transmitting cover 161 and the second light-transmitting cover 162 may be independently separated. In addition, the first light-transmitting cover 161 and the second light-transmitting cover 162 can be made thinner with a lens structure than when they are formed of a material having light diffusivity.

[Illumination Cover] The illumination cover 140 is a member covering the side of the appliance body 106 on which the light emitting module 10 and the like are installed, and is formed of a translucent resin. The lighting cover 140 is formed of, for example, milky white resin, and can diffuse the light from each light-emitting element 20 and emit it to the outside. In addition, the lighting cover 140 is detachably attached to the appliance body 106, for example.

[Effects etc.] As described above, according to the present embodiment, the lighting fixture 100 includes the fixture body 106, the substrate 11 placed on the fixture body 106, and the first main surface 11a disposed on the opposite side of the substrate 11 from the fixture body 106 side. A plurality of light-emitting elements 20, a power supply circuit 90 arranged on the second main surface 11b on the side of the appliance body 106 of the substrate 11 and used for supplying light-emitting power to the plurality of light-emitting elements 20, and an appliance mounting portion 8 connected to an external power source (Electrical connection part), a power cable 199 connecting the appliance installation part 8 and the power circuit 90; one end of the power cable 199 is connected to the power circuit 90 on the second main surface 11b side, and the other end is on the first main surface 11a The side is connected to the appliance installation part 8.

According to this structure, since one end of the power cable 199 is arranged on the second main surface 11b side and the other end is arranged on the first main surface 11a side, when the substrate 11 is viewed from the side, a part of the power cable 199 overlaps the substrate 11. As a result, the installation space of the power cable 199 in the height direction (Z-axis direction) can be reduced by the thickness of the substrate 11.

In addition, although the power cable 199 is flexible, it is not easily deformed because it is not so flexible. Therefore, it is necessary to sufficiently ensure a wiring space (installation space) of the power cable 199. As described above, when one end of the power cable 199 is arranged on the second main surface 11b side and the other end is arranged on the first main surface 11a side, each of the first main surface 11a side and the second main surface 11b side of the substrate 11 can be used. As a wiring space. For example, compared to the case where the power cable 199 is arranged only on the first main surface 11a side of the substrate 11, the wiring space on the first main surface 11a side can be made smaller.

Furthermore, the wiring space of the power cable 199 is also one of the factors that determine the thickness of the lighting fixture 100. As long as the wiring space can be made small, the thickness of the lighting fixture 100 itself can also be made thin.

In addition, the lighting fixture 100 further includes a circuit cover 150 covering the area (first area 13a) of the substrate 11 where the power supply circuit 90 is provided from the first main surface 11a side, and the power supply cable 199 is housed in the circuit cover 150.

According to this structure, since the wiring space of the power cable 199 can be made small, the circuit cover 150 for storing the power cable 199 can be made thin. The circuit cover 150 is also one of the factors that determine the thickness of the lighting fixture 100. If the circuit cover 150 itself is thin, the thickness of the lighting fixture 100 itself can also be made thin.

In addition, the lighting fixture 100 includes a light source cover 160 covering a plurality of light emitting elements 20 on the first main surface 11a side, and the light source cover 160 has lenses 1611, 1621 that diffuse light.

According to this structure, the lenses 1611 and 1621 included in the light source cover 160 can diffuse light. Therefore, compared to the case where the light source cover 160 is formed of a material having light diffusivity, the light source cover 160 can be made thinner, and the luminaire 100 itself can be made thinner.

In addition, a through hole 121 through which a power supply cable 199 passes through the substrate 11 is formed on the substrate 11.

According to this structure, since the power cable 199 penetrates the substrate 11 through the through opening 121, the power cable 199 can be tightly penetrated through the substrate 11. It is also possible to restrict the movement of the power cable 199 through the opening 121.

In addition, one or more circuit components 80 having a height higher than the light emitting element 20 are arranged on the second main surface 11b on the side of the appliance body 106 of the substrate 11, and the circuit cover 150 covers the substrate 11 from the side of the first main surface 11a. A region of more than one circuit component 80 (first region 13a).

According to this structure, since the circuit component 80 having a height higher than that of the light-emitting element 20 is arranged on the second main surface 11 b of the substrate 11, the circuit component 80 may not be covered with the circuit cover 150. Therefore, the height of the circuit cover 150 can be set regardless of the height of the circuit component 80. That is, as long as the circuit cover 150 matches the height of the parts covered by the circuit cover 150, the height can be made lower than when the circuit parts 80 are covered. The circuit cover 150 is also one of the factors that determine the thickness of the lighting fixture 100. If the circuit cover 150 itself is thin, the thickness of the lighting fixture 100 can also be made thinner.

Furthermore, when the circuit cover 150 is thinned, since the circuit cover 150 cannot easily shield the light emitted by the light-emitting element 20, it can illuminate the surroundings evenly.

Since the light-emitting element 20 is arranged on the first main surface 11 a of the substrate 11 and the circuit component 80 is arranged on the second main surface 11 b, the light-emitting element 20 and the circuit component 80 are arranged with the substrate 11 interposed therebetween. Therefore, the heat generated by one of the light-emitting element 20 and the circuit component 80 is not easily transferred to the other. Therefore, the influence of heat between the two can be suppressed.

In addition, in this embodiment, the case where the circuit component 80 is not mounted on the 1st main surface 11a of the 1st area|region 13a of the board|substrate 11 is illustrated. However, circuit components may also be mounted on the first main surface 11a of the first area 13a. At this time, the height of the circuit component is lower than the circuit component having the highest height among the circuit components 80 on the second main surface 11b side. Thereby, the obstruction of the thinning of the circuit cover 150 can be suppressed.

In addition, a storage recess in which one or more circuit components 80 are stored is formed in the appliance main body 106.

According to this structure, since one or more circuit components 80 are accommodated in the accommodating recess 1068 of the appliance body 106, the circuit components 80 can be protected.

In addition, one or more circuit components 80 constitute a power supply circuit 90.

According to this structure, a plurality of light-emitting elements 20 and power supply circuits 90 are arranged on one substrate 11. Therefore, compared to the case where the light source board with the light-emitting part and the circuit board with the power supply circuit are separated separately, there is no need to cut the part from the circuit board for the position restriction during installation after the parts are mounted on the circuit board. The manufacturing process. This point is advantageous from the viewpoint of, for example, the improvement of the manufacturing efficiency of the lighting fixture 100 or the suppression of the manufacturing cost.

Also, one or more circuit parts are lead-in type lead parts.

According to this structure, a plurality of lead-in type circuit components 80 can be collected on the second main surface 11b. Thereby, the lead wires of a plurality of circuit components 80 and the metal wiring of the first main surface 11a can be connected together by welding in a flow method.

In addition, the plurality of light-emitting elements 20 are surface-mounted light-emitting elements, and at least one of the plurality of light-emitting elements 20 is a light-emitting element 20a for a night light.

According to this structure, since the light-emitting element 20a for a night light is a surface-mounted light-emitting element, the light-emitting element 20a for a night light can be made thinner than a so-called cannonball-type light-emitting element. The night light emitting element 20a is one of the factors that determine the thickness of the lighting fixture 100. If the night light emitting element 20a itself is thin, the thickness of the lighting fixture 100 itself can also be made thin.

In addition, the cannonball-type light-emitting element may collapse and adversely affect the appearance. In this embodiment, since the light-emitting element 20a for night light is a surface-mounted light-emitting element, the light-emitting element 20a for night light is not collapse. That is, it is possible to suppress adverse effects on the aesthetics of the appearance.

In addition, among the plurality of light-emitting elements 20, the other light-emitting element 20b, which is different from the night-light light-emitting element 20a, is arranged closer to the outside of the substrate 11 when viewed from the top than the night-light light-emitting element 20a.

According to this structure, since the other light emitting element 20b is arranged closer to the outer side of the substrate 11 than the night light light emitting element 20a when viewed in plan, the distance between the other light emitting element 20b and the night light light emitting element 20a can be made larger. The voltage difference between the other light emitting element 20b and the night light light emitting element 20a may be large from the viewpoint of safety. Therefore, when the interval between the other light-emitting element 20b and the night-light light-emitting element 20a is small, there is a risk of a short circuit due to the voltage difference. However, as described above, if the distance between the other light-emitting element 20b and the night-light light-emitting element 20a can be made larger, the occurrence of a short circuit can be suppressed.

In addition, the lighting fixture 100 further includes a first translucent cover 161 covering the other light-emitting elements 20b on the first main surface 11a side, and a second translucent cover 162 covering the night light light-emitting elements 20a on the first main surface 11a side. .

According to this structure, when the night light emitting element 20a is thin, the second light-transmitting cover 162 covering the light-emitting element 20a can also be thin. The second transparent cover 162 is also one of the factors that determine the thickness of the lighting fixture 100. Therefore, by making the second transparent cover 162 thinner, the thickness of the lighting fixture 100 itself can be made thinner.

In addition, the first translucent cover 161 has a lens 1611 that diffuses light.

According to this structure, the lens 1611 included in the first translucent cover 161 can diffuse light. Therefore, compared with a case where the first light-transmitting cover 161 is formed of a material having light diffusibility, the first light-transmitting cover 161 can be made thinner, and the lighting fixture 100 itself can be made thinner.

In addition, the second translucent cover 162 has a lens 1621 that diffuses light.

According to this structure, the lens 1621 included in the second light-transmitting cover 162 can diffuse light. Therefore, compared to the case where the second light-transmitting cover 162 is formed of a material having light diffusibility, the second light-transmitting cover 162 can be made thinner, and the lighting fixture 100 itself can be made thinner.

In addition, the first light-transmitting cover 161 and the second light-transmitting cover 162 are integrated.

According to this structure, since the first light-transmitting cover 161 and the second light-transmitting cover 162 are integrated, the number of parts can be reduced. In addition, the weight of the entire luminaire 100 can also be suppressed.

(Other Embodiments) As mentioned above, the present invention has been described based on the embodiments, but the present invention is not limited to the above-mentioned embodiments. In addition, in the following description, the same parts as those in the above-mentioned embodiment are given the same reference numerals and their descriptions may be omitted.

For example, in the above-mentioned embodiment, the case where the light-emitting element 20a for night light is arranged in the first area 13a and the other light-emitting element 20b is arranged in the second area 13b is illustrated. The light-emitting element 20a for night light and other light-emitting elements 20a may be arranged in the second area 13b. The light-emitting element 20b is arranged in the second region 13b.

FIG. 8 is an enlarged view showing a schematic structure of a substrate 11C of a modification example. As shown in FIG. 8, in the substrate 11C of the modified example, the night light light-emitting element 20a and the other light-emitting elements 20b are arranged in the second region 13b. Furthermore, in the substrate 11C, a pair of slits 111 are formed between the night light emitting element 20a and the other light emitting element 20b. With this pair of slits 111, the insulation distance between the night light emitting element 20a and the other light emitting elements 20b is ensured. Thereby, the short circuit caused by the voltage difference between the light-emitting element 20a for night light and the other light-emitting element 20b can be suppressed. In addition, the width of the slit 111 may also be a width that does not cause discharge due to the voltage difference between the night light light emitting element 20a and other light emitting elements 20b. In addition, as long as the space between the night light emitting element 20a and the other light emitting elements 20b is sufficiently maintained, the slit 111 may not be provided.

In addition, the substrate 11 of the light-emitting module 10 can also be a metal base substrate made of a metal material coated with resin on the surface, in addition to the glass composite substrate and the resin substrate exemplified in the above embodiment. At this time, for example, the heat of the plurality of light-emitting elements 20 and the plurality of circuit components 80 mounted on the first main surface 11a of the substrate 11 by surface mounting technology is conducted to the appliance body 106 via the substrate 11 with good efficiency.

In addition, the outer shape of the substrate 11 is not limited to, for example, the outer shape shown in FIG. 3. For example, the light-emitting module 10 may also have an annular substrate 11 with an opening in the center.

In addition, the outer shape of the appliance body 106 is not limited to the outer shape shown in FIG. 1 and the like. For example, the appliance body 106 may have a polygonal outer shape such as a rectangle when viewed from above, or may have an outer shape composed of straight lines and curves.

In addition, one or more circuit components 80 arranged on the substrate 11 may constitute a circuit (electronic circuit) of a different type from the power supply circuit 90. For example, according to a signal sent from the outside of the luminaire 100, a control circuit that performs dimming control or color adjustment control on a plurality of light-emitting elements 20 may also be constituted by the one or more circuit components 80. In addition, the power supply circuit 90 may include the above-mentioned control circuit.

In addition, in the above-mentioned embodiments and modifications, the light-emitting element 20 is an LED element packaged with an LED chip as an example. However, semiconductor light-emitting elements such as semiconductor lasers, or other types of solid-state light-emitting elements, such as organic EL (Electro Luminescence) or inorganic EL elements, can also be used as the light-emitting element 20.

In addition, the above-mentioned embodiment and its modification examples are subjected to various modifications conceived by the manufacturer, and the configuration requirements and functions of each embodiment and its modification examples are arbitrarily combined without departing from the scope of the present invention. The implementation form is also included in the present invention.

8‧‧‧Equipment installation part (electrical connection part) 10‧‧‧Light-emitting module 11‧‧‧Substrate 11C‧‧‧Substrate 11a‧‧‧First main surface 11b‧‧‧Second main surface 12‧‧ ‧Opening 13a‧‧‧First area (area) 13b‧‧‧Second area 20‧‧‧Light-emitting element 20a‧‧‧Light-emitting element (light-emitting element for night light) 20b‧‧‧Light-emitting element (other light-emitting elements ) (Light-emitting element for lighting) 25‧‧‧Light-emitting part 80‧‧‧Circuit parts 90‧‧‧Power circuit 100‧‧‧Lighting appliance 106‧‧‧Apparatus body 111‧‧‧Gap 121‧‧‧Penetration port 126‧ ‧‧Support 140‧‧‧Lighting cover 150‧‧‧Circuit cover 151‧‧‧First cover 152‧‧‧Second cover 160‧‧‧Light source cover 161‧‧‧First light transmission cover 162‧‧‧ 2 Translucent cover 199‧‧‧Power cable 1061‧‧‧Outermost peripheral part 1062‧‧‧Innermost peripheral part 1063‧‧‧Middle part 1064‧‧‧First installation face 1065‧‧‧Erecting part 1066‧‧ ‧Second installation face 1067‧‧‧Curved plate part 1068‧‧‧Receiving concave part 1261‧‧‧Insulation part 1511‧‧‧Opening 1512‧‧‧Cover part 1515‧‧‧Cut part 1521‧‧‧Base part 1522‧‧‧Wall 1523‧‧‧Aperture 1611‧‧‧Lens 1621‧‧‧Lens X‧‧‧Direction Y‧‧‧Direction Z‧‧‧Direction

Fig. 1 is an exploded perspective view of the lighting fixture of the embodiment. Figure 2 is a partial cross-sectional view showing the appliance body, light emitting module, circuit cover, and light source cover of the embodiment. Fig. 3 is a plan view of the light emitting module of the embodiment viewed from the side of the appliance body. Fig. 4 is a plan view of the light emitting module of the embodiment viewed from the floor side. Fig. 5 is a side view of the light emitting module of the embodiment. Fig. 6 is an exploded perspective view showing the light emitting module, circuit cover, and light source cover of the embodiment. Fig. 7 is a partial cross-sectional view showing the appliance body, light emitting module, circuit cover, and light source cover of the embodiment. FIG. 8 is an enlarged view showing a schematic structure of a substrate of a modification example.

10‧‧‧Lighting Module

11‧‧‧Substrate

11a‧‧‧The first main surface

11b‧‧‧Second main surface

20‧‧‧Light-emitting element

20a‧‧‧Light-emitting element (light-emitting element for night light)

20b‧‧‧Light-emitting devices (other light-emitting devices) (Light-emitting devices for lighting)

25‧‧‧Light-emitting part

80‧‧‧Circuit parts

90‧‧‧Power circuit

199‧‧‧Power cable

X‧‧‧direction

Y‧‧‧ direction

Z‧‧‧ direction

Claims (14)

A lighting appliance includes: an appliance body; a substrate placed on the appliance body; a plurality of light-emitting elements arranged on the first main surface of the substrate on the opposite side of the appliance body; a power supply circuit arranged on the substrate The second main surface on the side of the appliance body is used to supply light-emitting power to the plurality of light-emitting elements; an electrical connection portion that receives power from an external power source; a power cable that connects the electrical connection portion and the power source Circuit; One end of the power cable is connected to the power circuit on the second main surface side, and the other end is connected to the electrical connection portion on the first main surface side. For example, the lighting appliance of the first item of the scope of patent application further includes: a circuit cover covering the first area of the substrate where the power circuit is provided from the first main surface side, and the power cable is housed in the circuit cover. For example, the lighting appliance of the second item of the scope of patent application, wherein, on the second main surface of the appliance body side of the substrate, more than one circuit part higher than the light-emitting element is arranged, and the circuit cover is removed from the first The main surface side covers the area of the substrate where the one or more circuit components are provided. For example, the lighting fixture of the third item of the scope of patent application, wherein a housing recess for storing the one or more circuit components is formed in the fixture body. For example, the lighting appliance of item 3 of the scope of patent application, wherein the one or more circuit parts constitute the power supply circuit. For example, the lighting appliance of item 3 of the scope of patent application, wherein the one or more circuit parts are lead-inserted lead parts. For example, the luminaire of item 1 of the scope of patent application further includes: a light source cover covering the plurality of light-emitting elements on the first main surface side, the light source cover having a lens that diffuses light. For example, the lighting appliance of the first item of the scope of patent application, wherein a through hole for the power cable to penetrate the substrate is formed on the substrate. For example, the luminaire of item 1 of the scope of patent application, wherein the plurality of light-emitting elements are surface-mounted light-emitting elements, and at least one of the plurality of light-emitting elements is a light-emitting element for night light. For example, the lighting appliance of item 9 of the scope of patent application, of which, The other light-emitting elements of the plurality of light-emitting elements that are different from the night light-use light-emitting elements are arranged closer to the outer side of the substrate in a plan view than the night light-use light-emitting elements. For example, the lighting appliance of item 10 of the scope of patent application further includes: a first light-transmitting cover, which covers the other light-emitting elements on the first main surface side; a second light-transmitting cover, which covers the first main surface side This light-emitting element for night light. For example, the luminaire of item 11 of the scope of patent application, wherein the first light-transmitting cover has a lens for diffusing light. For example, the luminaire of item 11 of the scope of patent application, wherein the second light-transmitting cover has a lens that diffuses light. For example, the lighting appliance of item 11 of the scope of patent application, wherein the first light-transmitting cover and the second light-transmitting cover are integrated.

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