Light source unit and lighting fixture

Abstract

To provide a lightweight lighting fixture that solves the problems of heat dissipation in the light source unit and mounting of rear components. [Solution] The light source unit 130 comprises a resin cover portion 134 having a hollow structure, a light source substrate 131 mounted inside the cover portion, and a rear component 136. The light source substrate 131 comprises a substrate 132 and a light source 133. The cover portion 134 is formed by integrally molding a resin light emission cover portion 134A that emits light emitted from the light source 133 and a resin support cover portion 134B that supports the light source substrate. A rear component mounting portion 134B06, which is a part of the support cover portion 134B and to which rear component mounting portions 136 and 135 can be attached, protrudes parallel to the flat portion 134B01. The space between the flat portion 134B01 and the rear component mounting portion 134B06 contains members 136B and 135Ba that constitute the rear component and a part of the fastener 136F, thereby attaching the rear component 136 to the rear component mounting portion 134B06.

Description

[Technical Field]

[0001] The present invention relates to a light source unit and a lighting fixture equipped with a light source unit, and more particularly to a lighting fixture in which the fixture body and the light source unit are separate. [Background technology]

[0002] One type of lighting fixture installed on the ceiling comprises a light source unit and a fixture body having a recess for housing the light source unit (see Patent Document 1). In this lighting fixture, when the mounting spring of the light source unit is hooked onto the spring receiver of the fixture body, the elastic force of the mounting spring pulls the light source unit towards the lighting fixture, housing the light source unit within the fixture body.

[0003] The lighting fixture described in Patent Document 2 comprises a fixture body and a light-emitting module, the light-emitting module (equivalent to an LED substrate) being arranged inside a casing made of translucent resin. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2019-207784 [Patent Document 2] Japanese Patent Publication No. 2012-084367 [Overview of the project] [Problems that the invention aims to solve]

[0005] In the lighting fixture described in Patent Document 1, there is a problem in that the light source unit is heavy, and one reason for this is that the support to which the substrate equipped with LEDs is attached is made of metal.

[0006] On the other hand, the lighting fixture described in Patent Document 2 uses a casing made of translucent resin, and therefore does not have any components equivalent to a metal support. However, a light-emitting module with vertical louvers is provided for purposes such as maintaining strength and ensuring heat dissipation, and it is thought that sufficient weight reduction has not been achieved.

[0007] The metal support not only holds the LED-mounted circuit board on the front, but also attaches rear components such as the power supply and connection parts to the main unit to the back. In this process, tapped holes were made in the metal support, and screws were inserted into these holes and tightened to secure the rear components. A problem with using a resin support is that it is not possible to secure the components by tapping holes in the resin due to the strength limitations of the resin. Furthermore, a problem with using a hollow resin support integrated with the front cover is that it is difficult to insert tools into the hollow part of the support and attach the rear components.

[0008] This invention has been made in view of the aforementioned problems, and aims to provide a lightweight lighting fixture that solves the problems of heat dissipation of the light source unit and mounting of rear components. [Means for solving the problem]

[0009] To solve the above problems, the present invention provides A light source unit comprising a resin cover having a hollow structure, a light source substrate mounted inside the cover, and a rear component, The light source substrate comprises a substrate and a light source, The cover portion is formed by integrally molding a resin light-emitting cover portion that emits light from the light source and a resin support cover portion that supports the light source substrate. A part of the support cover portion, to which the rear component can be attached, protrudes parallel to the flat portion on the support cover portion to which the light source substrate is attached. The back component is attached to the back component attachment portion by allowing a member constituting the back component and a part of a fastening material to enter a space between the flat portion and the back component attachment portion, which is a light source unit.

[0010] Also, in the present invention, the back component attachment portion may be formed with a through-hole for attaching the back component.

[0011] Also, in the present invention, the back component may be at least one component selected from a power supply, a light source unit side connecting component, a communication unit, and a spring protection portion.

[0012] Also, the present invention relates to a lighting fixture comprising a fixture main body provided with a fixture main body side connecting component, and a light source unit, wherein the light source unit comprises a resin cover portion having a hollow structure, a light source substrate attached inside the cover portion, and a back component, the light source substrate comprises a substrate and a light source, the cover portion is configured by integrally molding a resin light exit cover portion that emits light emitted from the light source and a resin support cover portion that supports the light source substrate, a back component attachment portion, which is a part of the support cover portion and to which the back component can be attached, protrudes parallel to a flat portion of the support cover portion where the light source substrate is attached, the back component is attached to the back component attachment portion by allowing a plate portion constituting the back component and a part of a fastening material to enter the space between the flat portion and the back component attachment portion, the back component includes a light source unit side connecting component, the fixture main body and the light source unit are connected by connecting the fixture main body side connecting component and the light source unit side connecting component, which is a lighting fixture.

Effects of the Invention

[0013] The light source unit according to the present invention has a hollow structure in which the light-emitting cover portion and the support cover portion are integrated. The light source substrate is mounted inside the support cover portion, and the outside of the support cover portion is exposed. Therefore, it is lightweight without using metal, while ensuring heat dissipation.

[0014] Furthermore, the light source unit according to the present invention includes a hollow cover portion in which a light emission cover portion and a support cover portion are integrated, and a rear component mounting portion is provided that protrudes from the support cover portion, allowing rear components such as light source unit connecting components to be attached. [Brief explanation of the drawing]

[0015] [Figure 1] Perspective view of a lighting fixture [Figure 2] Side view of the light source unit as seen from the XF direction and top view as seen from the ZB direction. [Figure 3] End view of the cut section of the lighting fixture as seen from the YF direction. [Figure 4] Light source substrate viewed from the ZF direction [Figure 5] Front view of the end cap as seen from the YF direction and top view as seen from the ZB direction. [Figure 6] End view of the cut section including the power supply unit of the light source unit. [Figure 7] Perspective view of the connecting spring section [Figure 8] End view of the cut section including the connecting spring portion of the light source unit. [Figure 9] Perspective view of a lighting fixture with the light source unit and the fixture body separated. [Figure 10] Perspective view of the spring support [Figure 11] Cross-sectional view of a modified cover section. [Figure 12] Side view and top view of the light source unit of Embodiment 2 [Figure 13] Cross-sectional view of the lighting fixture of Embodiment 2 [Figure 14] Cross-sectional view of the light source unit of Embodiment 3 [Modes for carrying out the invention]

[0016] <Embodiment 1> <Overview> The lighting fixture 100 according to this embodiment will be described with reference to the drawings. Figure 1 shows a perspective view of the lighting fixture 100 from a diagonally downward direction. The lighting fixture 100 is composed of a fixture body 110 to which a light source unit 130 is attached, and is mounted on a ceiling 190 as an example of an installation target, to irradiate light into the room.

[0017] The lighting fixture 100 can be installed on a wall or floor, but regardless of the orientation in which it is installed, Z relative to the lighting fixture 100 F -Z B To make it easier to understand, we use the term Z, which is used to indicate direction, etc. B The direction is sometimes indicated as "down." In other words, notations such as "down" are terms used to describe the direction of a lighting fixture and are unrelated to the direction of gravity.

[0018] In this specification, the figures referenced are schematic representations, sometimes omitting or exaggerating parts of the structure to facilitate understanding of the present invention. Furthermore, when describing the structure of a component with a symmetrical shape, if it would be obvious to repeat the same explanation, only one side (left or right) may be described to avoid repetition.

[0019] <Lighting control device> The lighting control device 170 in Figure 1 consists of a tablet, smartphone, PC, etc., and has a lighting control program 171 (not shown) installed on it. The user can operate the lighting control program 171 to communicate with the lighting fixture 100 wirelessly 178 and change the lighting conditions. Lighting conditions include color temperature (color adjustment), brightness (dimming), and on / off. In addition to manual control, scheduled operation can be performed to automatically change the lighting conditions at set times according to a pre-registered schedule.

[0020] The lighting control device 170 is not mandatory, and even without the lighting control device 170, the lighting fixture 100 can be turned on and off by turning the power line on and off. The lighting control device may be controlled by a wired system.

[0021] <Light source unit> As shown in Figure 2(a), a side view from the right, and Figure 2(b), a top view from above, the light source unit 130 includes a cover portion 134, a power supply portion 136, and a connecting spring portion 135.

[0022] <Cover section> Figure 3 shows a cross-section end view including the main body 110 of the device along line AA shown in Figure 2(b).

[0023] The cover portion 134 is a hollow structure member consisting of a light-emitting cover portion 134A provided on the front side of the light source 133 and a support cover portion 134B provided on the rear side of the light source substrate 131. The light-emitting cover portion 134A is translucent and has light-diffusing material dispersed in it as appropriate. The support cover portion is white so as to have almost no translucency, but it may be colored gray, black, or other colors by using a resin with high thermal conductivity. The light-emitting cover portion 134A and the support cover portion 134B are integrally extruded by a two-color molding method. The material of the cover portion 134 is resin, and polycarbonate or acrylic is preferably used.

[0024] The cover portion 134 has a hollow structure in which the light-emitting cover portion 134A and the support cover portion 134B are integrated, making it lightweight yet strong, thereby suppressing deflection of the cover portion 134 in the longitudinal direction. Conventional supports were made of long, flat plates, which made them prone to bending (deflection) in the longitudinal direction. However, even if the support cover portion 134B of the cover portion 134 tries to bend, the light-emitting cover portion 134A, which has sides, does not bend, resulting in the advantage that the overall structure does not deflect.

[0025] <Light-emitting cover section> The light-emitting cover portion 134A is formed by a curved surface and has the function of transmitting and appropriately diffusing the light emitted by the light source 133. Alternatively, it may be made transparent to suppress diffusion.

[0026] <Support cover section> As shown in Figure 3, the support cover portion 134B includes a first flat portion 134B01, an internal protrusion portion 134B02, a substrate support portion 134B03, a second flat portion 134B04, a spacer portion 134B05, a rear component mounting portion 134B06, a third flat portion 134B07, and a reflective portion 134B08.

[0027] The rear component mounting portion 134B06 protrudes outward from the hollow structure from the second flat portion 134B04 and the third flat portion 134B07, which form the outer circumference of the hollow structure cover portion 134, and is not a part that forms the outer circumference of the hollow structure.

[0028] The light source substrate 131, described later, is attached in close contact with or near the lower surface of the first flat portion 134B01 (the inside of the support cover portion 134B). At this time, the substrate support portion 134B03, which protrudes inward from the lower end of the internal protrusion portion 134B02 that protrudes downward from the first flat portion 134B01, supports the light source substrate 131. When bonding the light source substrate 131 to the first flat portion 134B01, the internal protrusion portion 134B02 and the substrate support portion 134B03 may be omitted, but they may be left in place to maintain support in case the adhesive strength decreases.

[0029] The first flat portion 134B01 and the second flat portion 134B04 have one side facing the inside of the hollow structure and the other side exposed to the outside of the hollow structure. Therefore, the heat generated by the light source substrate 131 is easily dissipated to the outside through the first flat portion 134B01. For this reason, it is preferable that at least the first flat portion 134B01 be made of a resin with a higher thermal conductivity than the light emission cover portion 134A, etc. Considering that it is manufactured by two-color molding, it is preferable that the entire support cover portion 134B be made of a resin with a higher thermal conductivity than the light emission cover portion 134A.

[0030] Referring to Figure 3, the light source unit 130 is pulled towards the fixture body 110 by the connecting spring portion 135, causing the third flat portion 134B07 to contact the tip of the long side surface portion 115 of the fixture body 110. The opaque cover portion from the third flat portion 134B07 to the first flat portion 134B01 eliminates light loss from the light source 133 to the housing recess 112. Since the support cover portion 134B is made of resin, it is difficult to make it completely opaque, so it is sufficient if its light transmittance is less than that of the light-transmitting light-emitting cover portion 134A, which is light-transmitting.

[0031] The rear component mounting section 134B06 is provided at a distance from the second flat section 134B04 by the spacer section 134B05, so that the support section of the rear component (such as the spring holding section 135B) can be inserted into it.

[0032] The reflective portion 134B08 is a component located between the end of the second flat portion 134B04 and the two-color molding boundary A / B. This component re-reflects the light P emitted from the light source 133a, which has been reflected back by the light emission cover portion 134A, causing the light emission cover portion 134A to illuminate brightly up to the vicinity of its boundary A / B.

[0033] <Light source board / light source> As shown in Figure 4, the light source substrate 131 has multiple light sources 133, each consisting of surface-mount LEDs, arranged in rows with spacing along the length of the substrate. While the number of rows for the light sources 133 is shown as two in Figure 1, it may be one row or three or more rows. In addition to surface-mount LEDs, COB (Chip On Board) LEDs or CSP (Chip Scale Package) LEDs, which have the following blue LED chips mounted on the substrate, may also be used.

[0034] The light source 133 preferably uses an LED in which a blue LED chip equipped with an InGaN light-emitting layer is encapsulated in a phosphor-containing encapsulating resin. The light-emitting color can be adjusted by the type and amount of phosphor.

[0035] The light source 133 may, for example, use only one LED of a single color, or it may use two LEDs of different colors (for example, daylight white (color temperature 6500K) and incandescent (color temperature 2700K)) arranged alternately. By using these two LEDs, it becomes possible to change the color (tune) in a manner that closely follows blackbody radiation.

[0036] Furthermore, the three LEDs of different colors may be arranged so that their colors are mixed. For example, by using red (R), green (G), and blue (B) LEDs, a very wide range of colors can be obtained.

[0037] Another example of a light source with three different emission colors is a combination of the following red, yellow-white, and blue-white LEDs.

[0038] The red LED (R) emits light within the range of CIE1931 chromaticity coordinates enclosed by (0.66, 0.23), (0.423, 0.355), (0.5, 0.5), and (0.736, 0.264), with (0.60, 0.38) being an example.

[0039] Yellow-white LEDs (Yw) emit light at chromaticities within the range enclosed by the CIE1931 chromaticity coordinates (0.5,0.5), (0.423,0.355), (0.342,0.312), (0.352,0.44), (0.37,0.63), and the chromaticity boundary line, with (0.44,0.47) being one example.

[0040] A blue-white LED (Bw) emits light within the chromaticity range enclosed by (0.336, 0.24), (0.352, 0.44), (0.15, 0.2), and (0.2, 0.1) in the CIE1931 chromaticity coordinate system, with (0.23, 0.26) being an example.

[0041] Because Bw (blue-white) light, which is a mixture of other light spectra with high luminous efficiency, has higher luminous efficiency than B (blue) light, which has a nearly monochromatic spectrum, using three light-emitting elements of R, Yw, and Bw has the advantage of being able to achieve a relatively good power-to-luminous flux conversion efficiency (lm / W) compared to using three primary color light-emitting elements of R, G, and B.

[0042] <End cap> As shown in Figure 2, the end cap 140 is a component attached to the short end of the cover portion 134.

[0043] Y in Figure 2(a) B The end cap 140 attached to the side end is Y F Figures 5(a) and Z are front views from the direction shown. B As shown in Figure 5(b), a top view from a specific direction, the device comprises a lid portion 141, a frame portion 142, a screw receiving portion 143a, and a fixing portion 143b. The frame portion 142 is inserted into the area enclosed by the light-emitting cover portion 134A, the reflecting portion 134B08, the first flat portion 134B01, and the second flat portion 134B04. The screw receiving portion 143a is a member provided with a through hole 143c. The fixing portion 143b is a member that is inserted into and fitted into a groove provided in the support cover portion 134B, and is provided with a through hole 143c that has a larger diameter than the through hole of the screw receiving portion 143a. The screw receiving portion 143a and the fixing portion 143b are used to fix the end cap 140 and the support cover portion 134B. The fixing of the end cap 140 and the support cover portion 134B will be described later.

[0044] Furthermore, the end cap 140 is provided with a notch N1. The notch N1 is used to pass through the LED drive cable 139 necessary for connecting the light source and the power supply unit 136 (see Figure 2(b)).

[0045] The material of the end cap 140 is preferably the same resin as the light-emitting cover portion 134A, or a resin with similar light-transmitting properties.

[0046] <Power supply section> Referring to Figures 6 and 9, which are cross-sectional end views of the CC' section of Figure 2 including the power supply unit 136 of the light source unit 130, the power supply unit 136, which is one of the rear components, has the function of converting AC power supplied from the AC cable 138 on the light source unit side into DC power for driving the light source and supplying it to the light source through the LED drive cable 139. The output of the power supply unit 136 may be fixed, but it may also be controlled externally, in which case the control signal from the external source may be received by the wireless module 137.

[0047] The power supply unit 136 mainly consists of a power supply main unit 136A and a power supply mounting unit 136B. The power supply mounting unit 136B is attached to the rear component mounting unit 134B06 of the support cover unit 134B using fasteners 136F such as screws or rivets.

[0048] The power supply mounting section 136B is a component for holding the power supply main unit 136A and for attaching it to the cover section 134 of the light source unit. To attach the power supply mounting section 136B to the rear component mounting section 134B06, as shown in Figure 6, a fastener 136F such as a screw or rivet is passed through the mounting hole 134B09 of the rear component mounting section 134B06 and the hole 136Bc of the power supply mounting section 136B, and the power supply mounting section is attached using the fastener 136F. Note that Figure 6 shows the fastener 136F as a screw, but a rivet may also be used.

[0049] <Connecting spring section> Figure 7(a) shows a perspective view of the connecting spring portion 135, which is a connecting component on the light source unit side, and Figure 8 shows a cross-section end view of the BB line (connecting spring portion) of the light source unit 130 shown in Figure 2(b). The connecting spring portion 135, which is one of the rear components, is attached to the upper surface of the support cover portion 134B and is a connecting component on the light source unit side that connects the light source unit 130 to the fixture body 110 by engaging with the spring receiver 117 of the fixture body 110.

[0050] As shown in Figure 7(a), the connecting spring section 135 comprises a connecting spring 135A, a spring holding section 135B, a spring protection section 135D, and a fastening member 135F.

[0051] The connecting spring 135A is, for example, a double torsion spring, formed by bending spring wire. The connecting spring 135A includes a spring tip 135Aa, a frame portion 135Ab connected to the spring tip, a coil spring portion 135Ac that is continuous with the frame portion and bent into a coil shape, and a hook portion 135Ad which is a rod-shaped portion that is continuous with the coil spring portion and hooked onto the spring holding portion 135B.

[0052] The spring retaining part 135B is a component that holds the connecting spring 135A and is attached to the cover part 134 of the light source unit. In order to attach the spring retaining part 135B to the rear component mounting part 134B06, as shown in Figures 7(a) and 8, a fastener 135F such as a screw or rivet is passed through the mounting hole 134B09 of the rear component mounting part 134B06 and the hole 135Bc of the spring retaining part 135B and attached by the fastener 135F. Note that Figure 7(a) shows the fastener 135F as a screw and Figure 8 shows the fastener 135F as a rivet, but by considering the pattern of the part where the Phillips screw is inserted in Figure 7(a) as a circular shape, it can be considered as a rivet, and by considering the lower side of the fastener 135F in Figure 8 as a nut, it can be considered that the fastener 135F is a screw and a nut.

[0053] The spring retaining portion 135B is formed by bending a metal plate or the like. The spring retaining portion 135B comprises a plate portion 135Ba, a spring fixing portion 135Bb, a hole portion 135Bc for passing the fastener 135F, and an arch portion 135Bd. The plate portion 135Ba is a plate-shaped part and is fixed to the surface of the support cover portion 134B that faces the surface to which the light source substrate 131 is attached. The spring fixing portion 135Bb is a flat plate-shaped part to which the coil spring portion 135Ac of the connecting spring 135A is hooked. The hole portion 135Bc is a hole provided in the plate portion 135Ba, and may have screw threads (taps) for fixing the plate portion 135Ba and the support cover portion 134B (screw threads are not necessary if fixing with nuts or rivets). The arch portion 135Bd is a part that has been processed into an arch shape, and the fastening portion 135Ad of the connecting spring 135A is inserted through the arch and fastened. The protruding portion 135Be is a part that is bent and stands upright at the end of the plate portion 135Ba.

[0054] The spring protection part 135D is a metal plate that prevents the spring tip 135Aa from forcefully hitting the support cover part 134B due to the spring's force and damaging the support cover part 134B. This component was unnecessary when the support was made of metal. The spring protection part 135D is also attached to the rear component mounting part 134B06 of the light source unit by fastening material 135F.

[0055] The plate portion 135Ba and the spring protection portion 135D of the spring holding portion 135B are attached to the rear component mounting portion 134B06 of the cover portion by a fastening material 135F. At this time, the plate portion 135Ba and the rear component mounting portion 134B06 of the cover portion 134 are in surface contact over a distance W, so that the force is distributed and cracking and fatigue of the cover portion 134 can be prevented.

[0056] Figure 7(b) is a perspective view showing the case where the plate-shaped spring protection part 135D is replaced with a spring protection part 135D2 made of an elastic material (such as rubber). The spring protection part 135D2 is, for example, a rectangular parallelepiped and is fixed to the first flat part 134B01 or the like with adhesive. The spring protection part 135D2 may extend in the X direction to below the rear component mounting part 134B06.

[0057] <Main body of the device> Figure 9 shows a perspective view of the lighting fixture 100 with the light source unit 130 and the fixture body 110 separated. The fixture body 110 comprises a housing 111 and a spring receiver 117 and terminal block 118 located on the bottom surface 114 of the housing 111.

[0058] As shown in Figure 3 in cross-sectional view, the housing 111 has an elongated bottom portion 114 and a Z-axis extending from the long side of the bottom portion 114. F It has two long side portions 115 extending in the direction, and these, X F An opening in the direction is formed, and a housing recess 112 capable of accommodating the rear components of the light source unit is provided.

[0059] The bottom surface portion 114 is provided with a lighting wire insertion hole 120A for passing an electric wire such as a lighting wire 198 exposed from a ceiling 190 to supply electric power to the lighting fixture 100. The bottom surface portion 114 is also provided with two fixture mounting holes 120B at positions near both ends in the longitudinal direction for passing a hanging bolt 196 exposed from the ceiling 190 or a screw for mounting the fixture main body to a reinforcing portion of the ceiling 190. When fixing with hanging bolts, referring to FIG. 9, after the hanging bolts 196 are respectively passed through the fixture mounting holes 120B, nuts 197 (which may be used in combination with washers and spring washers) are tightened onto the hanging bolts 196, whereby the fixture main body 110 is fixed to the ceiling 190.

[0060] <Spring receiver> FIG. 10 is a perspective view of a spring receiver, which is a fixture body-side connecting component, for connecting to a connecting spring portion 135 that is a light source unit-side connecting component to integrate the light source unit and the fixture body. As shown in FIG. 10, the spring receiver 117 includes a spring receiver fixing portion 117A attached to the bottom surface portion 114 of the fixture body, and a Z direction from the bottom surface portion F projecting spring receiver main portion 117B, and the spring receiver main portion 117B is provided with a hook portion 117D and a spring insertion hole 117C. The hook portion 117D has a wide and flat hook shape, and a frame portion 135Ab (see FIG. 6) of the connecting spring 135A is hooked thereon in a light source unit locked state described later. The spring insertion hole 117C is a substantially rectangular hole, and the frame portion 135Ab of the connecting spring 135A is inserted therethrough in a light source unit installed state described later. The spring receiver 117 is generally formed by punching, bending, or the like a metal plate.

[0061] <Terminal block · Lighting wire insertion hole> The terminal block 118 provided on the bottom surface portion 114 has a function of connecting the lighting wire 198 that has entered the interior of the fixture main body through the lighting wire insertion hole 120A, and connecting the fixture main body-side AC cable 119 connected to the power supply unit 136.

[0062] <Mounting hole> The bottom surface 114 of the fixture body is provided with fixture mounting holes 120B for attaching the fixture body 110 to the ceiling 190 by passing suspension bolts 196 through them and tightening them with nuts 197. After the suspension bolts 196 are passed through these fixture mounting holes 120B, the nuts 197 are tightened onto the suspension bolts 196, thereby fixing the fixture body 110 to the ceiling 190.

[0063] <Assembly of the light source unit> (1) Installation of the light source substrate 131 inside the support cover portion 134B Y of cover part 134 F or Y B The light source substrate 131 is slid in the longitudinal direction of the support cover portion 134B, with the long side of the light source substrate 131 and its vicinity positioned within the area enclosed by the first flat portion 134B01, the internal protrusion portion 134B02, and the substrate support portion 134B03 of the support cover portion 134B shown in Figure 3, through the opening on the side.

[0064] (2) Attachment of the rear components (connecting spring section 135, spring protection section 135D, power supply section 136) to the support cover section 134B (by screwing or riveting) The attachment of the rear components will be explained using the connecting spring section 135 as an example. In order to attach the connecting spring portion 135 to the support cover portion 134B, the Y of the cover portion 134 F or Y B From the side, slide the plate portion 135Ba of the connecting spring portion 135 shown in Figure 6 so that it is positioned between the second flat portion 134B04 and the rear component mounting portion 134B06 of the support cover portion 134B shown in Figure 7. Then, align the hole portion 135Bc of the spring holding portion 135B of the connecting spring portion 135 with the mounting hole 134B09 of the rear component mounting portion 134B06, Z B The fastener 135F is attached to the mounting hole 134B09 from the side.

[0065] If the fastening material 135F is a rivet, it is not necessary to provide screw threads in the mounting hole 134B09. Alternatively, if the fastening material 135F is a screw, a nut may be placed on the underside of the plate portion 135Ba and the screw and nut may be tightened together.

[0066] Compared to screw fastening, riveting has the advantage of simplifying the work process, but it also has the disadvantage that the rivets can deform, making it impossible to remove the back panel. Therefore, it is advisable to consider the need to remove the back panel for repairs or other purposes when deciding which fastening method to use. Other fastening methods, such as adhesive or belt fastening, may also be used.

[0067] (3) Connection of LED drive cable 139 to power supply unit 136 An LED drive cable 139 is connected to the end of the light source substrate 131. This cable is routed through the notch N1 in the end cap to the outside of the hollow cover portion 134 and connected to the power supply unit 136.

[0068] (4) Attachment of the end cap 140 to the cover portion 134 Referring to Figure 5, attach the end cap 140 to the opening of the cover portion 134 so that the frame portion 142 of the end cap 140 fits inside the hollow cover portion 134.

[0069] Here, in the support cover portion 134B, a through hole is provided in the portion that overlaps with the through hole of the fixing portion 143b. In this state, a tapping screw is tightened from the fixing portion 143b side through the through hole of the fixing portion 143b and the through hole of the rear component mounting portion 134B06 into the through hole of the screw receiving portion 143a. The tapping screw is threaded into the through hole of the screw receiving portion 143a. As a result, the rear component mounting portion 134B06 is sandwiched between the screw receiving portion 143a and the fixing portion 143b, and the end cap 140 and the cover portion 134 are fixed together.

[0070] <Installation of the fixture body on the ceiling, attachment of the light source unit to the fixture body> Install the lighting fixture 100 on the ceiling using the following procedure. Alternatively, it may be installed on a bar fitting such as a raceway instead of the ceiling.

[0071] (1) Referring to Figure 9, the fixture body 110 is fixed to the ceiling 190 by passing the two suspension bolts 196 extending from the ceiling side through the fixture mounting holes 120B of the fixture body 110 and tightening the nuts 197. Alternatively, the fixture body 110 may be fixed by screwing it to the reinforcement part of the ceiling 190 from below the fixture mounting holes 120B with screws without using suspension bolts.

[0072] (2) Pass the light wire 198 on the ceiling 190 side through the light wire insertion hole 120A and connect it to the terminal block 118.

[0073] (3) The connecting springs 135A of the two connecting spring parts 135 on the light source unit 130 are each attached to the hook parts 117D of the spring receivers 117 on the fixture body 110. This state is referred to as the "light source unit locked state".

[0074] (4) In the locked state, connect the connector (not shown) of the AC cable 119 on the fixture body side, which extends from the terminal block 118 of the fixture body 110, to the connector (not shown) of the AC cable 138 on the light source unit side, which extends from the light source unit 130.

[0075] (5) The light source unit 130 is pushed upward. The connecting spring 135A then enters the spring insertion hole 117C of the spring receiver 117. The force of the spring pulls up the light source unit 130, and the support cover portion 134B of the light source unit 130 is pressed against and makes contact with the fixture body 110. This state is the lighting fixture 100 shown in Figure 1 and is called the "light source unit installed state".

[0076] <Variations of the cover section> Figures 11(a), (b), and (c) are cross-sectional views of cover portions 234, 334, and 434, which are modified versions of cover portion 134. The positions of the mounting holes 234B09, 334B09, and 434B09, which correspond to the mounting holes 134B09 in the rear component mounting portions 234B06, 334B06, and 434B06, respectively, are indicated by dashed lines.

[0077] In the cover portion 234 shown in Figure 11(a), the third flat portion 234B07, which corresponds to the third flat portion 134B07, is connected to the middle portion of the spacer portion 234B05, which corresponds to the spacer portion 134B05. As a result, the distance between the light source and the cover portion 234 is slightly wider than in the case of the cover portion 134. The rear component mounting portion 234B06 extends inward from the tip of the spacer portion 234B05.

[0078] In the cover portion 334 shown in Figure 11(b), the third flat portion 334B07, which corresponds to the third flat portion 134B07, is connected to the lower end of the spacer portion 334B05, which corresponds to the spacer portion 134B05. As a result, the distance between the light source and the cover portion 234 is even wider than in the case of the cover portion 134. The rear component mounting portion 334B06 extends inward from the tip of the spacer portion 234B05.

[0079] In the cover portion 434 shown in Figure 11(c), the third flat portion 434B07, which corresponds to the third flat portion 134B07, is connected to the second flat portion 434B04, which corresponds to the second flat portion 134B04, and a rear component mounting portion 434B06 extends upward from this connection portion in the figure. The attachment of the rear component to such a vertically extending rear component mounting portion will be explained in detail in Embodiment 3.

[0080] <Embodiment 2> <Overview> The lighting fixture 500 according to this embodiment has a narrower width in the X direction compared to the lighting fixture 100, and its fixture shape is designed with aesthetics in mind. The lighting fixture 500 is constructed by attaching a light source unit 530 to a fixture body 510.

[0081] <Light source unit> The light source unit 530 is X F Figures 12(a) and Z are side views from the direction. B As shown in Figure 12(b), which is a top view from the direction, it comprises a cover portion 534, a power supply portion 536, and a connecting spring portion 535. Due to the narrowing of the width of the light source unit 530, the power supply mounting portion 536B is provided in the Y direction instead of the X direction of the main power supply portion 536A.

[0082] <Cover section> Figure 13 shows a cross-sectional view of only the essential parts of the lighting fixture 500 in the AA line near the power supply unit 536 shown in Figure 12(b).

[0083] The cover portion 534 is a hollow component consisting of a light-emitting cover portion 534A provided on the front side of the light source 533 and a support cover portion 534B provided on the rear side of the light source substrate 531 (printed circuit board 532). The light-emitting cover portion 534A is translucent and has light-diffusing material dispersed in it as appropriate. The support cover portion is white so as to have almost no translucency, but it may be colored gray, black, or other colors by using a resin with high thermal conductivity. The light-emitting cover portion 534A and the support cover portion 534B are integrally extruded by a two-color molding method. The material of the cover portion 534 is resin, and polycarbonate or acrylic is preferably used.

[0084] The cover portion 534 has a hollow structure in which the light-emitting cover portion 534A and the support cover portion 534B are integrated, so that it is lightweight while suppressing deflection of the cover portion 534 in the longitudinal direction.

[0085] <Light-emitting cover section> The light-emitting cover portion 534A has flat sides and a flat front surface, and has the function of transmitting and appropriately diffusing the light emitted from the light source 533. Alternatively, it may be made transparent to reduce diffusion.

[0086] <Support cover section> As shown in Figure 13, the support cover portion 534B includes a first flat portion 534B01, an internal protrusion portion 534B02, a substrate support portion 534B03, a second flat portion 534B04, a spacer portion 534B05, a rear component mounting portion 534B06, a third flat portion 534B07, and a contact portion 534B10.

[0087] The rear component mounting portion 534B06 protrudes from the spacer portion 534B05 and the third flat portion 534B07 that form the outer circumference of the hollow cover portion 534, and is not a part that forms the hollow structure.

[0088] The first flat portion 534B01 and the second flat portion 534B04 have one side facing the inside of the hollow structure and the other side exposed to the outside of the hollow structure. Therefore, the heat generated by the light source substrate 531 is easily dissipated to the outside through the first flat portion 534B01. For this reason, it is preferable that at least the first flat portion 534B01 be made of a resin with a higher thermal conductivity than 534A, etc. Considering that it is manufactured by two-color molding, it is preferable that the entire support cover portion 534B be made of a resin with a higher thermal conductivity than the light emission cover portion 534A.

[0089] The rear component mounting section 534B06 is provided at a distance from the second flat section 534B04 by a spacer section 534B05, and is designed to accommodate a mounting plate 536G that has threaded (tapped) holes.

[0090] <Light source substrate> The light source substrate 531 consists of multiple surface-mount LEDs arranged in rows with spacing between them in the longitudinal direction on a long printed circuit board 532. As shown in Figure 13, the number of rows in which the light sources 533 are arranged is one.

[0091] <Main body of the device> The main body of the device 510 comprises a housing 511 and a spring receiver 117 and a terminal block 118 located on the bottom surface 514 of the housing 511.

[0092] As shown in Figure 13 (cross-sectional view), the housing 511 has an elongated bottom portion 514 and a Z-axis extending from the long side of the bottom portion 514. F It has two long side portions 515 extending in the direction, and these, X F A recessed area 512 is formed that opens in the direction and can accommodate the rear components of the light source unit. In addition, a projection 521 is provided near the opening of the long side portion 515. The connecting spring portion 535 is Z B The light source unit is fixed in place when the contact portion 534B10 of the light source unit, which is pulled up in the direction, comes into contact with the protruding portion 521.

[0093] <Mounting of the power supply unit and its support cover> Referring to Figure 13, the power supply unit 536, which is one of the rear components, has the function of converting the AC power supplied from the AC cable on the light source unit side into DC power for driving the light source and supplying it to the light source through the LED drive cable.

[0094] The power supply unit 536 comprises a main power supply unit 536A and a power supply mounting unit 536B. The power supply mounting unit 536B is attached to a mounting plate 536G, which has threaded mounting holes 536GH, by fasteners 536F such as screws, through mounting holes 536BH provided in the power supply mounting unit 536B and mounting holes 534B06H provided in the rear component mounting unit 534B06, thereby attaching the power supply mounting unit 536B to the support cover unit 534B. Alternatively, it may be attached with rivets instead of screws, in which case the mounting plate 536G is not required.

[0095] <Attachment of the connecting spring section to its support cover section> The spring retaining portion 535B of the connecting spring portion 535 is attached to the support cover portion 534B in the same manner as the power supply mounting portion 536B is attached to the support cover portion 534B.

[0096] <Embodiment 3> <Overview> The light source unit 550 according to this embodiment differs from the light source unit 530 in its mounting structure for the rear components.

[0097] <Cover section> Figure 14 shows a cross-sectional view of the light source unit 550, showing only the essential parts near the power supply unit 536.

[0098] The cover portion 534 has a hollow structure in which the light-emitting cover portion 534A and the support cover portion 534B are integrated.

[0099] <Attaching the power supply unit to the support cover> As shown in Figure 13, the support cover portion 534B extends from the third flat portion 534B07 in the vertical direction (Z BIt is equipped with a rear component mounting portion 534B11 that extends in the direction, and a mounting hole 534B11H is provided in the rear component mounting portion 534B11.

[0100] <Mounting of the power supply unit and its support cover> Referring to Figure 14, the power supply mounting section 536T is attached to the nut 536N using a fastener 536F such as a screw, through the mounting hole 534B11H provided in the rear component mounting section 534B11 of the support cover section 534B. Alternatively, it may be attached with a rivet, in which case the nut 536N is not required. The power supply mounting section 536T is attached to the Z of the power supply main unit 536A. F Side and Z B Since there are two mounting points on the side, a sufficiently stable installation is possible, but it is also possible to install it in other locations.

[0101] Furthermore, other rear components such as connecting springs are also provided with a portion corresponding to the vertically extending power supply mounting portion 536T, allowing them to be mounted using the rear component mounting portion 534B11 of the light source unit.

[0102] <Variations and other variations> Although embodiments of the lighting fixture according to the present invention have been described above, it is possible to modify the exemplified lighting fixtures as follows, for example, and it goes without saying that the present invention is not limited to the lighting fixtures shown in the embodiments described above.

[0103] Although the light source unit in this embodiment is used in combination with the fixture body, it may also be attached to a lighting rail (lighting duct) or raceway that functions as the fixture body, or it may be attached directly to a mounting object such as a ceiling without using the fixture body.

[0104] The hollow cover portion is not limited to a closed hollow cross-sectional shape; it may also have holes. Furthermore, the cross-sectional shape may include notches in the X direction that are shorter than the width in the X direction, and notches in the Y direction that are shorter than the height in the Y direction.

[0105] In the example of Embodiment 1, the wireless module 137 is inserted into a slot provided in the power supply unit 136. However, a separate communication unit (which has the same functions as the wireless module) may be attached to the cover as a rear component. In this case, the mounting portion of the communication unit (the portion corresponding to the power supply mounting portion 136B) can be attached to the "rear component mounting portion 134B06" of the cover.

[0106] In Embodiment 1, the fixture body was described using an inverted Fuji shape, and in Embodiments 2 and 3, a trough shape was used as an example. However, in any embodiment, the fixture body may be inverted Fuji shape, trough shape, open bottom shape, or other shapes.

[0107] In addition to mounting the light source on the surface of the light source substrate, the light source 133 may also be directly mounted on the support cover portion 134B without using the light source substrate 131.

[0108] The substrate is not limited to a printed circuit board; a metal core substrate (a substrate with an insulating film on the surface of a metal plate and a wiring pattern on top of it) may be used, or a ceramic substrate with a wiring pattern formed on its surface may be used. Thus, the material of the substrate is not particularly limited. Furthermore, the board portion of a COB type LED or the package portion of a surface mount type LED may serve as the substrate, eliminating the need for a printed circuit board or the like.

[0109] The boundary A / B of the two-color molding of the cover is the Z of the light source. B The light emission cover (A) is in the direction of the light source's Z F If there is a support cover (B) in the direction, it can be installed anywhere along that direction.

[0110] The cover portion may be molded in multiple colors, such as three colors, rather than just two. For example, the reflective portion 134B08 may be white, and the first flat portion 134B01, which is the part to which the light source substrate is attached, may be made of a colored resin with high thermal conductivity. In that case, the color of the support cover portion is not particularly limited.

[0111] In this embodiment, the case where the connecting spring portion is on the light source unit side and the spring receiving portion is on the fixture body side is shown, but the connecting spring portion may be on the fixture body side and the spring receiving portion may be on the light source unit side. In that case, the spring receiving portion, which is the connecting component on the light source unit side, is attached to the light source unit as a rear component.

[0112] While the example shown uses a linear double torsion spring as the connecting spring, the shape is not limited to curved plate springs, etc. Any component used for connecting objects does not need to be elastic.

[0113] The components of the present invention are not limited to the embodiments and modifications described above, and various modifications are possible within the technical scope described in the claims. For example, the components of the lighting fixture described above can be applied to various lighting fixtures, not limited to lighting fixtures related to LEDs.

[0114] The embodiments and their variations described above may be partially combined. [Explanation of Symbols]

[0115] 100, 500 lighting fixtures 110, 510 Main unit of the device 111, 511 cabinets 112, 512 accommodating recesses 113 Reflector section 114, 514 Bottom part 115, 515 Long side surface 116 Short side section 117 Spring receiver (connecting part on the main body side of the device) 117A Spring support fixing part 117B Spring support main part 117C Spring insertion hole 117D Hook section 118 Terminal block 119 AC cable on the main unit side of the device 120A Lighting Wire Insertion Hole 120B Fixture mounting hole 521 Protrusion 130, 530, 550 light source units 131, 531 Light source substrate 132, 532 Printed Circuit Boards 133, 533 light source 134, 234, 334, 434, 534 Cover section 134A, 534A Light emission cover section 134B, 534B Support cover section 134B01 1st flat part 134B02, 534B02 Internal protrusion 134B03, 534B03 Board support part 134B04 2nd flat part 134B05, 234B05, 334B05, 534B05 Spacer section 134B06, 234B06, 334B06, 434B06, 534B06, 534B11 Rear component mounting section 134B07 3rd flat part 134B08 Reflector Mounting holes for 134B09, 234B09, 334B09, 434B09, 534B06H, 534B11H, 536BH, and 536GH. 534B10 Contact part 135, 535 Connecting spring section 135A Connecting spring (rear component, light source unit side connecting component) 135Aa Spring tip 135Ab Frame 135Ac Coil Spring Section 135Ad Latch part 135B, 535B Spring retainer 135Ba plate part 135Bb Spring fixing part 135Bc Hole 135Bd Arch section 135Be protrusion 135D 135D2 Spring protection part 135F, 136F, 536F fasteners 136, 536 Power supply unit (rear component) 136A, 536A Power Supply Main Unit 136B, 536B, 536T Power supply mounting section 136Bc Hole 536G Mounting Plate 536N Nut 137 Wireless Module 138 AC cable for light source unit 139 LED drive cable 140 End Caps 141 Lid 142 Frame section 143a Screw receiving part 143b Fixed part 143c through hole 170 Lighting control device 171 Lighting control program 178 Wireless 190 ceiling 196 Suspension bolts 197 Nut 198 Power lines

Claims

1. A lighting fixture comprising a long light source unit and a fixture body to which the light source unit is attached, The aforementioned device body is It has a housing recess that accommodates at least a part of the light source unit, The aforementioned light source unit is A resin cover part having a hollow structure, It comprises a light source substrate, The aforementioned cover portion is The outer periphery of the hollow structure includes a first flat portion that contacts the opening edge of the housing recess when the light source unit is attached to the fixture body, The hollow structure comprises a second flat portion which forms the outer periphery of the hollow structure, is located inside the cover portion more than the first flat portion, and on which the light source substrate is disposed. Lighting fixtures.

2. The second flat portion is continuous with the spacer portion that is erected from the first flat portion toward the inside of the cover. The lighting fixture according to claim 1.

3. The second flat portion is continuous with the first flat portion and the spacer portion, and is continuous with the reflector portion which forms a triangular cross-section. The lighting fixture according to claim 2.

4. A light source unit that is attached to the fixture body and constitutes a lighting fixture, The aforementioned device body is It has a housing recess that accommodates at least a part of the light source unit, The aforementioned light source unit is A resin cover part having a hollow structure, It comprises a light source substrate, The aforementioned cover portion is The outer periphery of the hollow structure includes a first flat portion that contacts the opening edge of the housing recess when the light source unit is attached to the fixture body, The hollow structure comprises a second flat portion which forms the outer periphery of the hollow structure, is located inside the cover portion more than the first flat portion, and on which the light source substrate is disposed. Light source unit.

Images