Lighting device

Abstract

To provide a simple and compact structure that can suppress thermal impact between a substrate and a power source, and facilitate a pipe connecting work.SOLUTION: A housing 20 includes an opening 22 on one side in a direction orthogonal to a longitudinal direction and a bottom part 24 on the other side. A power source 31 is mounted on a boss 25 provided on the bottom part 24, with an insertion hole 6 through which a second power source supply like L2 passes provided on one side in the longitudinal direction. A second power source supply line L2 is connected to the power source 31 from the opening 22 side. A substrate placement part 27 is provided along a longitudinal direction on the opening 33 side with respect to the power source 31 of the housing 20. A light emission element substrate 41 placed on the substrate placement part 27 is placed at a position overlapping in a direction orthogonal to the power source 31 and at a predefined gap Sa from the power source 31. A stepped part 28 on which a cover 8 is placed is provided around the substrate placement part 27.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture. [Background technology]

[0002] A known lighting fixture includes a board on which light-emitting elements are mounted, a power source, a box-shaped housing, and a cover that covers the opening of the housing. One such lighting fixture is a street light (security light) that includes a first board on which light-emitting elements are mounted and a second board made up of a group of circuits that turn on the light-emitting elements (see, for example, Patent Document 1). In this street light, the first board is thermally connected to the fixture body, and the second board is supported by a rocking support in a position separated from the fixture body. A partition plate is provided between the first and second boards to suppress thermal effects between the first and second boards. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2013 / 046333 Summary of the Invention [Problem to be solved by the invention]

[0004] By stacking the board and power supply, the area of ​​the lighting fixture can be reduced when viewed from the front, which is advantageous for making the lighting fixture smaller and reducing snow load. However, with conventional technology, the number of components required to suppress the thermal effects between the board and the power supply increases, which leads to a complex structure and makes assembly and installation work more complicated, which may make wiring connection work more complicated. An object of the present invention is to provide a simple and compact structure that can suppress the thermal influence between the board and the power supply, and to facilitate the wiring connection work. [Means for solving the problem]

[0005] The present invention provides a lighting fixture comprising a substrate on which a light-emitting element is mounted, a power source, a box-shaped storage section having a longitudinal direction for storing the substrate and the power source, and a cover for covering an opening of the storage section, wherein the storage section has the opening on one side perpendicular to the longitudinal direction and a bottom on the other side, the power source is attached to a boss provided on the bottom, an insertion hole through which a power supply line passes on either side of the longitudinal direction, the power supply line being connected to the power source from the opening side, a substrate mounting section on which the substrate is placed is provided along the longitudinal direction, on the opening side of the storage section closer to the power source, the substrate placed on the substrate mounting section overlaps the power source in the perpendicular direction and is positioned with a predetermined gap between it and the power source, and a stepped section on which the cover is placed is provided around the substrate mounting section. [Effects of the Invention]

[0006] According to the present invention, a simple and compact structure can be obtained that can suppress the thermal influence between the substrate and the power supply, and the wiring connection work can be made easier. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of a lighting fixture according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] FIG. 2 is a view showing the lighting fixture from above. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a diagram showing the power supply together with the peripheral configuration from the control device side. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 6. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 6. [Figure 9] FIG. 2 is a diagram showing the lighting fixture as viewed from the front. [Figure 10]FIG. 2 is a diagram schematically illustrating a light emitting element and a lens together with a step portion of a housing. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a lighting fixture 1 according to an embodiment of the present invention, FIG. 2 is a side view of the lighting fixture 1, and FIG. 3 is a view of the lighting fixture 1 from above. The lighting fixture 1 is used as a road lighting fixture and is also called a road light. The lighting fixture 1 may be used for purposes other than road lighting, such as parking lot lighting, park lighting, street lighting, and landscape lighting.

[0009] As shown in Figures 1 to 3, lighting fixture 1 includes fixture body 10 and a pole mounting part 11 for mounting fixture body 10 to a pole 2. Fixture body 10 includes housing 20 formed in a thin, box-like shape with a longitudinal direction. Housing 20 has a maximum length L in the front-to-rear direction of lighting fixture 1, and a height H, which is the length in the up-down direction, that is shorter than a width W, which is the length in the left-to-right direction of lighting fixture 1. In other words, the lighting fixture 1 is formed into a compact shape that is thin in the vertical direction and extends in the front-to-rear direction. In each figure including Fig. 1, the symbol F indicates the front direction of the lighting fixture 1, the symbol U indicates the upward direction, and the symbol LH indicates the leftward direction.

[0010] A freely openable and closable lid 3 is provided on the upper rear part of the housing 20. As shown in FIG. 1, when the lid 3 is opened, a wiring connection chamber 5 that houses a terminal block 4 is exposed. Power supply lines L1 and L2 (FIG. 7), which will be described later, are connected to the terminal block 4. A control device 30 is attached to the top surface of the housing 20 at a position away from the lid 3. The housing 20, the support post mounting portion 11, and the lid 3 are formed by casting metal such as aluminum or an aluminum alloy. Note that any of the housing 20, the support post mounting portion 11, and the lid 3 may be formed from a non-metallic material such as reinforced plastic with improved corrosion resistance and strength.

[0011] FIG. 4 is an exploded perspective view of the lighting fixture 1, and FIG. 5 is a side cross-sectional view of the lighting fixture 1 corresponding to the cross section IV-IV in FIG. As shown in Fig. 4, the housing 20 is formed in the shape of a bottomed box having an opening 22 that opens upward when the socket mounting portion 21, to which the control device 30 shown in Fig. 2 etc. can be mounted, is placed downward. In other words, the housing 20 has the opening 22 that opens on one side in the vertical direction of the housing 20, and is integrally formed with a bottom 24 that closes the other side in the vertical direction of the housing 20. The front-to-rear direction of the housing 20 corresponds to the longitudinal direction of the housing 20, and the up-to-down direction of the housing 20 corresponds to the direction perpendicular to the longitudinal direction of the housing 20.

[0012] 1 is provided on one side in the front-rear direction of the housing 20 (the socket mounting portion 21 side), and as shown in Fig. 4, the back surface of the wiring connection chamber 5 is exposed on the opening 22 side. An insertion hole 6 is provided on the back surface of the wiring connection chamber 5, penetrating the wiring connection chamber 5 in the vertical direction. A second power supply line L2 (Fig. 7) is passed through the insertion hole 6.

[0013] 4 and 5, a power source 31, a light-emitting element substrate 41 on which light-emitting elements 41a are mounted, and a lens 51 that controls the light distribution of the light-emitting elements 41a are housed within the housing 20. In this embodiment, the light-emitting elements 41a are LEDs, but are not limited to LEDs and may be, for example, organic EL elements.

[0014] An annular packing 7 is disposed on the inner periphery of the opening 22 of the housing 20, and a light-transmitting cover 8 is disposed in contact with this packing 7. A frame-shaped fixing member 9 is disposed on the periphery of the cover 8, and the fixing member 9 is fixed to the periphery of the opening 22 of the housing 20 with a plurality of fastening members 9t sandwiching the cover 8 therebetween. The cover 8 is made of a corrosion-resistant and strong material such as glass or acrylic resin, and covers the opening 22. The cover 8 can also be called a light-transmitting globe.

[0015] 5, the power supply 31 includes power supply components 32 and a rectangular plate-shaped substrate 33 on which the power supply components 32 are mounted. The power supply components 32 are mounted on the surface of the substrate 33 on the opening 22 side. A plurality of bosses 25 are integrally formed on the bottom 24 of the housing 20, and stand upright toward the opening 22. The power supply 31 is fixed to these bosses 25 with fastening members 25t. The bosses 25 are provided, for example, at positions corresponding to the four corners of the substrate 33 of the power supply 31. The number and positions of the bosses 25 may be changed as appropriate.

[0016] Since the power supply 31 is fixed using the boss 25, as shown in Fig. 5, the power supply 31 is supported with a gap Sa between it and the bottom 24 of the housing 20. This gap Sa is used as a space for arranging the socket mounting part 21 attached to the bottom 24, etc.

[0017] Socket mounting portion 21 is a member to which control device 30, which controls lighting fixture 1, can be attached. Control device 30 has a socket, and can be easily attached to socket mounting portion 21 from the outside of lighting fixture 1 using this socket. Note that a wide range of known sockets and socket mounting portion 21 can be used. Control device 30 is a device that controls lighting device 1, and performs dimming control and color adjustment control according to a schedule or external control, for example. Note that the configuration and functions of control device 30 may be changed as appropriate.

[0018] Socket mounting portion 21 is not limited to being able to mount any lighting control-related device (including control device 30) that is related to the control of lighting fixture 1. Examples of lighting control-related devices include sensor devices such as illuminance sensors, communication devices such as those with built-in SIM cards, and configurations that combine these devices. Furthermore, the lighting control related device may be a device compatible with the DALI (Digital Addressable Lighting Interface: registered trademark) system. Note that the lighting control related device does not have to be attached to the socket attachment portion 21.

[0019] Fig. 6 is a diagram showing power supply 31 together with the peripheral configuration from the control device 30 side. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6, and Fig. 8 is a cross-sectional view taken along line VIII-VIII in Fig. 6. Fig. 9 is a diagram showing lighting fixture 1 as seen from the front of the fixture. 6 to 8, the fixture body 10 of the lighting fixture 1 has a layout in which the control device 30, power supply 31, and light-emitting element substrate 41 are stacked in the vertical direction. Therefore, as shown in Fig. 9, the area of ​​the fixture body 10 can be reduced when viewed from the front of the fixture, which is advantageous for reducing the size of the lighting fixture 1 and the snow load.

[0020] More specifically, the power supply 31 and the terminal block 4 are arranged horizontally (corresponding to the front-to-back direction of the lighting fixture 1) in an area that overlaps vertically with the light-emitting element substrate 41, which is the largest component. The control device 30 is also arranged in an area that overlaps vertically with the power supply 31. The power supply 31, terminal block 4, and control device 30 are also located in an area that overlaps vertically with the cover 8.

[0021] In FIG. 7, symbol L1 indicates a first power supply line extending from the commercial power source to the terminal block 4, symbol L2 indicates a second power supply line extending from the terminal block 4, and symbol L3 indicates a signal line extending from the control device 30. The first power supply line L1 is connected to the terminal block 4 from the bottom 24 side of the housing 20. As shown in FIG. 1, a cover 3 is provided on the bottom 24 side, so that the first power supply line L1 can be easily connected to the terminal block 4 by opening the cover 3.

[0022] As shown in Figure 7, the signal line L3 extending from the control device 30 passes through the gap Sa (see Figure 5) between the bottom 24 of the housing 20 and the board 33 of the power supply 31, and is then connected to a connector on the surface of the board 33 facing the opening 22. Since the power supply system components 32 are mounted on the surface of the substrate 33 on the opening 22 side, sufficient space for arranging the signal line L3 can be secured, facilitating the wiring of the signal line L3. Furthermore, since the signal line L3 is connected to the power supply 31 from the opening 22 side, the connection of the signal line L3 is also easy. In this way, by stacking the control device 30, power supply 31, and light-emitting element substrate 41 vertically, space can be secured for the commercial power supply lines consisting of power supply lines L1 and L2, and the signal line L3, thereby making it possible to make the device more compact and simplifying the wiring connection work.

[0023] Next, the light emitting element substrate 41 and its surrounding structure will be described. 4, the light emitting element substrate 41 has a configuration in which a plurality of light emitting elements 41a are mounted on a rectangular plate-shaped substrate 41b. The light emitting element substrate 41 can also be called a light source portion and a light source substrate. The lens 51 is a rectangular plate-like member integrally having a plurality of lens portions 51a that control the distribution of light from each light-emitting element 41a. For example, the lens 51 is made of a resin molded product made of transparent resin. In this configuration, there is a one-to-one relationship between the light-emitting elements 41a and the lens portions 51a, but this configuration is not limiting.

[0024] 4, two light-emitting element substrates 41 are arranged side by side in the longitudinal direction of the housing 20. Three lenses 51 are arranged side by side in the longitudinal direction of the housing 20. The light-emitting element substrates 41 and the lenses 51 are stacked and fixed to the housing 20 by a plurality of fastening members 41t. In this way, by arranging a plurality of light emitting element substrates 41 and lenses 51 in the longitudinal direction of the housing 20, it is possible to change the specifications of the lighting device 1 and add variations by adjusting the number of light emitting element substrates 41 and lenses 51. Furthermore, by adjusting the number according to the size of the housing 20 in the longitudinal direction, it is possible to arrange light emitting element substrates 41 and lenses 51 according to the size of the housing 20. Note that depending on the size of the housing 20, each of the light emitting element substrates 41 and lenses 51 may be constituted by one piece.

[0025] 4, a substrate mounting portion 27 is integrally formed in the housing 20, protruding inward from the opening 22 and capable of mounting the light emitting element substrate 41. In addition, a step portion 28 is integrally formed between the substrate mounting portion 27 and the opening 22, on which the cover 8 is disposed with the packing 7 interposed therebetween. As shown in Figure 5, the step portion 28 is formed at a height closer to the bottom 24 than the opening edge of the opening 22 and closer to the opening 22 than the substrate mounting portion 27, and is formed in a step shape that positions the cover 8 in an appropriate position to cover the light-emitting element substrate 41.

[0026] 9 shows a diagram of the substrate mounting portion 27 and the light-emitting element substrate 41 extracted from the lighting device 1 as seen from the front of the device. For ease of explanation, the area of ​​the substrate mounting portion 27 is shown hatched in this diagram. As shown in Figure 9, the substrate mounting portion 27 has a pair of first substrate mounting portions 27a on which a pair of long side portions 41m of the light-emitting element substrate 41 are respectively mounted, and a second substrate mounting portion 27b on which one of a pair of short side portions 41n of the light-emitting element substrate 41 is mounted. The positions of the long side portion 41m and the short side portion 41n of the light emitting element substrate 41 are the same as the positions of the long side portion and the short side portion of the lens 51.

[0027] Each of the substrate placement portions 27a, 27b of the housing 20 is formed with a female screw 27h for fixing the light emitting element substrate 41. A fastening member 27t shown in FIG. 4 is fastened to each female screw 27h. Three sides of the light emitting element substrate 41 are placed on the substrate placement portion 27 and fixed to the substrate placement portion 27, so that the support strength and fixing strength of the light emitting element substrate 41 can be sufficiently ensured.

[0028] 9, inwardly recessed portions 41k are formed at intervals on a pair of long side portions 41m of the light-emitting element substrate 41. When the light-emitting element substrate 41 is fixed to the substrate mounting portion 27, these recessed portions 41k form wiring insertion holes between the substrate mounting portion 27 and the light-emitting element substrate 41, through which the wirings La and Lb connecting the power source 31 and the light-emitting element substrate 41 can pass. Note that a recess overlapping the recessed portion 41k and through which the wirings La and Lb can pass is also formed on the lens 51 side.

[0029] The wirings La, Lb are drawn from the power source 31 through the recess 41k toward the opening 22, and then connected to a wiring pattern formed on the surface of the light-emitting element substrate 41 on the opening 22 side. In other words, the wirings La, Lb connected to the power source 31 extend toward the opening 22 in a direction perpendicular to the longitudinal direction of the casing 20, pass through the recess 41k, and then are connected to the light-emitting element substrate 41 in a direction perpendicular to the longitudinal direction. Since the work of connecting the wirings La, Lb to the light-emitting element substrate 41 can be performed from the opening 22 side, the work of connecting the wirings La, Lb is easy. In this configuration, the wirings La and Lb are not routed through the housing 20, which is advantageous for reducing the size of the housing 20 and simplifying the structure of the housing 20. Also, the symbol Lc in FIG. 9 denotes wiring that connects the substrates 41b together.

[0030] The substrate mounting portion 27 has an expanded region 27c that extends outward from the light-emitting element substrate 41 when the light-emitting element substrate 41 is fixed to the substrate mounting portion 27. A part of the expanded region 27c is used as an arrangement space for the wirings La, Lb, and Lc. Since the arrangement space for the wirings La, Lb, and Lc can be secured, the wirings La, Lb, and Lc are easily routed and the connection work for the wirings La, Lb, and Lc is easy. The number and positions of the wires La, Lb, and Lc may be changed as appropriate depending on the number of light-emitting element substrates 41, the wiring pattern, etc. The number and positions of the recesses 41k through which the wires La and Lb pass may also be changed as appropriate.

[0031] 5 shows a side cross-sectional view of the lighting fixture 1, showing a separation distance D between the mounting positions of the power supply 31 and the light-emitting element substrate 41 relative to the housing 20. This separation distance D can be adjusted by the length of the boss 25 and the height of the substrate mounting portion 27, etc. In this configuration, the separation distance D is set so that the thermal influence between the power supply 31 and the light-emitting element substrate 41 can be sufficiently suppressed even when the power supply 31 and the light-emitting element substrate 41 are laid out in an overlapping manner. Furthermore, in this configuration, an aluminum substrate, which is a type of heat dissipation substrate, is used for both the power supply 31 and the light-emitting element substrate 41, and a highly efficient light-emitting element is used for the light-emitting element 41a. This effectively suppresses temperature rises in the power supply 31 and the light-emitting element substrate 41, and even when configured into a lighting fixture 1 of 30W class or higher, it is possible to sufficiently suppress the thermal influence between the power supply 31 and the light-emitting element substrate 41.

[0032] The aluminum substrate is also referred to as an aluminum base substrate or an aluminum core substrate. Heat dissipation substrates other than aluminum substrates may also be used. The highly efficient light-emitting element 41a can be defined as a light-emitting element having high luminous efficiency, and can also be defined as a light-emitting element having at least one of photon quantum efficiency and external quantum efficiency equal to or greater than a predetermined value.

[0033] As described above, lighting fixture 1 includes light-emitting element substrate 41, power supply 31, housing 20 functioning as a box-shaped housing having a longitudinal direction for housing light-emitting element substrate 41 and power supply 31, and cover 8 covering opening 22 of housing 20, as shown in Fig. 5, housing 20 has opening 22 on one side in the vertical direction perpendicular to the longitudinal direction and bottom 24 on the other side, power supply 31 is attached to boss 25 provided on bottom 24, and has insertion hole 6 on either side in the longitudinal direction through which second power supply line L2 (see Fig. 7) passes. As shown in Fig. 7, second power supply line L2 is connected to power supply 31 from the opening 22 side. Furthermore, a substrate mounting portion 27 is provided along the longitudinal direction on the opening 33 side of the housing 20 closer to the power source 31, and the light-emitting element substrate 41 placed on the substrate mounting portion 27 is positioned so as to overlap the power source 31 in the vertical direction and leave a predetermined gap Sa (see Figure 5) between it and the power source 31, and a step portion 28 on which a cover 8 is placed is provided around the substrate mounting portion 27.

[0034] According to this configuration, the light emitting element substrate 41 and the power supply 31 are laid out so as to overlap each other, and by adjusting the distance D (FIG. 5) between the light emitting element substrate 41 and the power supply 31, the thermal influence between them can be suppressed. This makes it easier to reduce the area of ​​the lighting fixture 1 when viewed from the front, which is advantageous for miniaturizing the lighting fixture 1 and reducing snow load. Furthermore, since the second power supply line L2 is connected from the opening 22 side to the power supply 31 on the bottom 24 side, the connection work is easy. As a result, a simple and compact structure can be obtained that can suppress the thermal influence between the light emitting element substrate 41 and the power supply 31, and the wiring connection work can be made easier.

[0035] 9, wirings La, Lb connected to the power source 31 are connected to the light-emitting element substrate 41 from the substrate mounting portion 27 side, and parts of the wirings La, Lb are disposed on the substrate mounting portion 27. According to this configuration, the wirings La, Lb can be disposed using the substrate mounting portion 27, which facilitates the work of routing and connecting the wirings La, Lb. Furthermore, the light-emitting element substrate 41 has a recess 41k on a long side 41m, which is an edge extending in the longitudinal direction of the housing 20, and the wires La, Lb pass through the recess 41k and are connected to the light-emitting element substrate 41. With this configuration, there is no need to provide a place on the housing 20 side through which the wires La, Lb can pass, which is advantageous for making the housing 20 smaller and simplifying its structure.

[0036] Furthermore, since a plurality of light-emitting element substrates 41 are arranged in the longitudinal direction of housing 20, by adjusting the number of light-emitting element substrates 41, it is possible to easily accommodate changes in the specifications of lighting device 1 and addition of variations. In addition, a socket mounting portion 21 is provided on the bottom 24 of the housing 20 to which a control device 30 having a socket can be attached, so that the light-emitting element substrate 41, power supply 31 and control device 30 can be laid out in a stacked manner, which is ideal for reducing the area of ​​the lighting device 1 when viewed from the front of the device.

[0037] Furthermore, the power supply 31, socket mounting portion 21, and terminal block 4 are accommodated in an area that vertically overlaps with the light emitting element substrate 41, so that the area of ​​the lighting fixture 1 can be effectively reduced when viewed from the front.

[0038] Figure 10 is a diagram showing a light-emitting element 41a and a lens 51 (lens portion 51a) together with the step portion 28 of the housing 20, where Figure 10(A) is a diagram showing a cross section AA of Figure 9, Figure 10(B) is a diagram showing a cross section BB of Figure 9, and Figure 10(C) is a diagram showing a modified example. As shown in Figures 10(A) and 10(B), the step portions 28 of the housing 20 are erected on both the left and right sides of the light-emitting element 41a, so that part of the wide-band component light emitted through the lens 51 is blocked by the step portions 28, causing so-called vignetting.

[0039] More specifically, Figure 10(A) shows the case of a row of light-emitting elements 41a located in the center of the left and right sides of the light-emitting element substrate 41, and light that exceeds 71.8 degrees on one side of the vertical axis C1 passing through the center of the light-emitting element 41a is blocked by the step portion 28. Figure 10(B) shows the case of two rows of light-emitting elements 41a spaced apart on the left and right sides of the light-emitting element substrate 41, in which light that exceeds 61.4 degrees on one side of the vertical axis C1 passing through the center of the light-emitting element 41a is blocked by the step portion 28. That is, the more rows of light emitting elements 41a are arranged, the closer the light emitting elements 41a are to the step portion 28, and the lower the light utilization efficiency becomes.

[0040] In contrast to this, in the example shown in FIG. 10(C), the lens portion 51a is formed as a lens that controls the light distribution so that light from the light emitting elements 41a in one of the adjacent rows is directed toward the other row. More specifically, the lens portion 51a is formed in a shape that is not axially symmetrical with respect to the vertical axis C1, and the lens portion 51a1 on the opposite side of the light-emitting elements 41a in another adjacent row with respect to the vertical axis C1 is formed as a lens that limits the angle θx with respect to the vertical axis C1. The angle θx is set to a value within an angle range that does not cause blocking by the step portion 28. This allows the light from the light-emitting elements 41 to be emitted within the angle θx, improving the light utilization rate.

[0041] 10(A) and 10(B) on the side of the light-emitting element 41a in another adjacent row with respect to the vertical axis C1, the lens may be the same as the lens 51a shown in Figures 10(A) and 10(B), or may be a lens that limits the range of angle θy within the angular range that is not blocked by the step portion 28. Since the lens 51a2 side can emit light over a wide angular range that is not blocked by the step portion 28, even if the same lens as the lens 51a shown in Figures 10(A) and 10(B) is used, the decrease in light utilization rate can be limited within an acceptable range.

[0042] 10(C), even if the separation distance WD between the lens 51 and the step portion 28 is shortened, light can be emitted without being blocked by the step portion 28, or the light blocked by the left and right step portions 28 can be reduced, so the left and right step portions 28 can be disposed closer to the light-emitting element substrate 41 and the lens 51. This makes it possible to further reduce the area of ​​the device body 10 when viewed from the front of the device. The lens 51 is not limited to the lens portions 51a1 and 51a2 shown in FIG. 10(C), and the lens shape may be changed as appropriate within the range of controlling the light distribution so that the light from the light-emitting elements 41a in one of the adjacent rows is directed toward the other row.

[0043] The above-described embodiment merely shows one aspect of the present invention, and any modifications and applications are possible without departing from the spirit of the present invention.

[0044] The above embodiment supports the following configurations.

[0045] (Configuration 1) A lighting fixture comprising a substrate on which a light-emitting element is mounted, a power source, a box-shaped storage section having a longitudinal direction for storing the substrate and the power source, and a cover for covering an opening of the storage section, wherein the storage section has the opening on one side perpendicular to the longitudinal direction and a bottom on the other side, the power source is attached to a boss provided on the bottom, an insertion hole through which a power supply line passes on either side of the longitudinal direction, the power supply line being connected to the power source from the opening side, a substrate mounting section on which the substrate is placed is provided along the longitudinal direction, on the opening side of the storage section closer to the power source, the substrate placed on the substrate mounting section overlaps the power source in the perpendicular direction and is positioned with a predetermined gap between it and the power source, and a stepped section on which the cover is placed is provided around the substrate mounting section. This configuration allows the board and power supply to be laid out on top of each other, while adjusting the distance between them to suppress thermal effects between them. Furthermore, since the power supply line is connected from the opening side to the power supply on the bottom side, the connection work is easy. This allows for a simple and compact structure that can suppress thermal effects between the board and power supply, while also facilitating the wiring connection work.

[0046] (Configuration 2) A lighting device according to Configuration 1, wherein wiring connected to the power supply is connected to the board from the board mounting portion side, and a portion of the wiring is disposed on the board mounting portion. According to this configuration, the wiring can be arranged using the board placement section, which makes it easy to route and connect the wiring.

[0047] (Configuration 3) The lighting fixture according to configuration 2, wherein the substrate has a recess in an edge portion extending in the longitudinal direction, and the wiring passes through the recess and is connected to the substrate. According to this configuration, there is no need to provide a place for passing wires on the housing side, which is advantageous for making the housing smaller.

[0048] (Configuration 4) The lighting device according to any one of configurations 1 to 3, wherein a plurality of the substrates are arranged in the longitudinal direction. With this configuration, it is possible to easily accommodate changes in the specifications of the lighting fixture and the addition of variations by adjusting the number of boards.

[0049] (Configuration 5) A lighting fixture according to any one of configurations 1 to 4, wherein the bottom portion is provided with a socket mounting portion to which a lighting control-related device having a socket can be mounted from outside the lighting fixture. This configuration allows the board, power supply, and lighting control-related devices to be laid out in a stacked manner, which is suitable for reducing the area of ​​the lighting fixture when viewed from the front.

[0050] (Configuration 6) The lighting fixture according to configuration 5, wherein the power supply, the socket mounting portion, and a terminal block to which the power supply line is connected are accommodated in an area that overlaps with the substrate in the perpendicular direction. With this configuration, the area of ​​the lighting fixture can be effectively reduced when viewed from the front.

[0051] (Configuration 7) A lighting device described in any one of configurations 1 to 6, wherein the substrate has at least two rows of the light-emitting elements arranged at intervals in the longitudinal direction, and a lens is arranged to control the light distribution of each light-emitting element, and the lens controls the light distribution so that the light of the light-emitting elements in one of the adjacent rows is directed toward the other row. With this configuration, even if the distance between the substrate and the step portion is narrow, the light from the light-emitting element can be emitted without being blocked by the step portion, or the amount of light from the light-emitting element that is blocked by the step portion can be reduced. Therefore, the light utilization rate can be improved and the area of ​​the fixture body can be further reduced when viewed from the front of the fixture. [Explanation of symbols]

[0052] 1. Lighting equipment 4 Terminal block 6 Insertion hole 8 Cover 20 Housing (accommodation section) 21 Socket mounting part 22 Opening 24 Bottom 27 Substrate placement section 28 Step 30 Control device (lighting control related device) 31 Power supply 41 Light emitting element substrate 41a Light-emitting element 41k recess L1 1st power supply line (commercial power line) L2 2nd power supply line (commercial power line) L3 signal line

Claims

1. A lighting fixture comprising: a substrate on which a light-emitting element is mounted; a power source; a box-shaped housing having a longitudinal direction for housing the substrate and the power source; and a cover for covering an opening of the housing, the housing portion has the opening on one side in a direction perpendicular to the longitudinal direction and a bottom on the other side, the power supply is attached to a boss provided on the bottom, and an insertion hole through which a power supply line passes is provided on either side in the longitudinal direction, the power supply line is connected to the power supply from the opening side, a substrate placement portion on which the substrate is placed is provided along the longitudinal direction on the opening side of the accommodation portion relative to the power supply; the substrate placed on the substrate placement portion is positioned so as to overlap the power source in the orthogonal direction and with a predetermined gap between the power source and the substrate; A step portion on which the cover is disposed is provided around the substrate placement portion. Lighting fixtures.

2. a wiring connected to the power supply is connected to the substrate from the substrate placement portion side; A part of the wiring is disposed on the substrate placement portion.

10. The lighting fixture of claim 1.

3. the substrate has a recess in the longitudinally extending edge; The wiring is connected to the substrate through the recess.

3. A lighting fixture according to claim 2.

4. A plurality of the substrates are arranged in the longitudinal direction.

10. The lighting fixture of claim 1.

5. The bottom portion is provided with a socket mounting portion to which a lighting control-related device having a socket can be mounted from outside the lighting fixture.

10. The lighting fixture of claim 1.

6. The power supply, the socket mounting portion, and the terminal block to which the power supply line is connected are accommodated in an area that overlaps with the board in the orthogonal direction.

6. A lighting fixture according to claim 5.

7. At least two rows of the light emitting elements are arranged on the substrate at intervals in the longitudinal direction, and lenses are arranged to control the light distribution of each light emitting element, The lens controls the light distribution so that light from the light emitting elements in one of the adjacent rows is directed toward the other row.

7. A lighting fixture according to any one of claims 1 to 6.

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