Light source unit and lighting tool

Abstract

To provide a light-weight lighting tool which can solve a problem of heat radiation of a light source unit and an attachment of a back face component.SOLUTION: A light source unit 130 includes: a resin cover part 134 having a hollow structure; a light source substrate 131 attached inside the cover part; and a back face component 136. The light source substrate 131 includes a substrate 132 and a light source 133. The cover part 134 is configured by integrally forming a resin light emission cover part 134A which emits light emitted from the light source 133, and a resin support cover part 134B supporting the light source substrate. A back face component attachment part 134B06 which is a part of the support cover part 134B and can attach back face components 136, 135 project in parallel with a flat part 134B01. The back face component 136 is attached to the back face component attachment part 134B06 by allowing members 136B, 135Ba configuring the back face component and a part of a fastening material 136F to enter into a space between the flat part 134B01 and the back face component attachment part 134B06.SELECTED DRAWING: Figure 6

Description

[Technical Field]

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

[0002] One type of lighting fixture that is placed on a ceiling includes a light source unit and a fixture body that has a recess that houses 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 draws the light source unit toward the lighting fixture, and the light source unit is housed in the fixture body.

[0003] The lighting fixture described in Patent Document 2 includes a fixture body and a light emitting module, and the light emitting module (corresponding to an LED substrate) is disposed inside an enclosure made of a translucent resin. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-207784 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-084367 Summary of the Invention [Problem to be solved by the invention]

[0005] The lighting fixture of Patent Document 1 has a problem in that the light source unit is heavy, and the reason for this is that the support body on which the board on which the LED is mounted is made of metal.

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

[0007] The metal support not only supports the LED mounting board on the front, but also mounts rear components such as the power supply and connecting components to the fixture body on the back. In this case, tapped holes are drilled into the metal support, and screws are inserted into the holes and tightened to secure the rear components. The problem with using a resin support is that it is not possible to drill tapped holes in the resin to secure the components due to the strength of the resin. Another 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] The present invention has been made in consideration of the above problems, and aims to provide a lighting fixture that is lightweight by solving the problems of heat dissipation from the light source unit and the problems of attaching rear components. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides: A light source unit including a resin cover having a hollow structure, a light source substrate attached to the inside of the cover, and a rear component, the light source substrate includes a substrate and a light source; the cover portion is configured by integrally molding a light-emitting cover portion made of resin that emits light emitted from the light source and a support cover portion made of resin that supports the light source substrate, a rear component mounting portion, which is a part of the support cover portion and to which the rear component can be attached, protrudes in parallel with a flat portion of the support cover portion to which the light source board is attached; a part of a member and a fastening material constituting the rear component are inserted into a space between the flat portion and the rear component mounting portion, thereby mounting the rear component to the rear component mounting portion; It is a light source unit.

[0010] In addition, in the present invention, The rear component mounting portion may have a through hole formed therein for mounting the rear component.

[0011] In addition, in the present invention, The rear 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] The present invention also provides A lighting fixture having a fixture body with a fixture body side connecting component and a light source unit, the light source unit includes a resin cover having a hollow structure, a light source substrate attached to the inside of the cover, and a rear component; the light source substrate includes a substrate and a light source; the cover portion is configured by integrally molding a light-emitting cover portion made of resin that emits light emitted from the light source and a support cover portion made of resin that supports the light source substrate, a rear component mounting portion, which is a part of the support cover portion and to which the rear component can be attached, protrudes in parallel with a flat portion of the support cover portion to which the light source board is attached; a plate portion and a part of a fastening material that constitute the rear component are inserted into a space between the flat portion and the rear component attachment portion, thereby attaching the rear component to the rear component attachment portion; the rear component includes a light source unit side connecting component, The fixture body and the light source unit are connected by connecting the fixture body side connecting part and the light source unit side connecting part. It is a lighting fixture. [Effects of the Invention]

[0013] The light source unit of the present invention has a light source substrate attached to the inside of the support cover part of a hollow structure cover part in which the light emitting cover part and the support cover part are integrated, and the outside of the support cover part is exposed, so that it is lightweight without using metal and yet can ensure heat dissipation.

[0014] In addition, the light source unit according to the present invention has a hollow cover portion in which the light emitting cover portion and the support cover portion are integrated, and by providing a rear component mounting portion that protrudes from the support cover portion, rear components such as light source unit connecting components can be attached. [Brief explanation of the drawings]

[0015] [Figure 1] Perspective view of lighting fixture [Figure 2] Side view of the light source unit from the XF direction and top view from the ZB direction [Figure 3] Cutting edge view of the lighting fixture seen from the YF direction [Figure 4] Light source board viewed from the ZF direction [Figure 5] Front view of the end cap seen from the YF direction and top view seen from the ZB direction [Figure 6] An end view of a cutaway portion including the power supply unit of the light source unit [Figure 7] Perspective view of the connecting spring part [Figure 8] FIG. 1 is a cross-sectional end view of a light source unit including a connecting spring portion. [Figure 9] FIG. 1 is a perspective view of a lighting fixture in a state where the light source unit and the fixture body are separated. [Figure 10] Perspective view of the spring holder [Figure 11] Cross-sectional view of a modified example of the cover portion [Figure 12] 10A and 10B are a side view and a plan view of a light source unit according to a second embodiment of the present invention; [Figure 13] Cross-sectional view of a lighting fixture according to a second embodiment [Figure 14] Cross-sectional view of a light source unit according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] <Embodiment 1> <Summary> A lighting fixture 100 according to this embodiment will be described with reference to the drawings. Fig. 1 shows a perspective view of the lighting fixture 100 as seen obliquely from below. The lighting fixture 100 is configured by attaching a light source unit 130 to a fixture body 110, and is attached to a ceiling 190, which is an example of an attachment target, and irradiates light into the room.

[0017] The lighting fixture 100 can be installed on a wall or floor, but regardless of the installation orientation, the Z F -Z B For ease of understanding, we use Z B The direction is sometimes written as "down." In other words, the notation "down" is a term used to describe the direction of the lighting fixture, and has nothing to do with the direction of gravity.

[0018] In addition, the drawings referred to in this specification are shown in a schematic manner, with some of the components omitted or exaggerated, to facilitate understanding of the present invention. Furthermore, when explaining the configuration of a component having a bilaterally symmetrical shape, if the explanation would clearly be a repetition of the same explanation, only one of the left and right sides may be explained to avoid repetition.

[0019] <Lighting control device> The lighting control device 170 in Figure 1 is comprised of a tablet, smartphone, PC, etc., and has a lighting control program 171 (not shown) installed. The user can operate the lighting control program 171 to communicate with the lighting fixtures 100 via wireless communication 178 and change the lighting conditions. The lighting conditions include color (color adjustment), brightness (dimming), and on / off. In addition to manual control, scheduled operation is also possible, in which the lighting conditions are automatically changed at set times according to a pre-registered schedule.

[0020] Lighting control device 170 is not essential, and even if lighting control device 170 is not provided, lighting device 100 can be turned on / off by turning the power line on / off. The lighting control device may be a wired control system.

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

[0022] <Cover> FIG. 3 shows a cross-sectional end view of the device body 110 taken along line AA in FIG. 2(b).

[0023] The cover portion 134 is a hollow 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 a light diffusing material is dispersed therein as appropriate. The support cover portion is white so as to have almost no translucency, but may be colored other colors such as gray or black by using a resin with high thermal conductivity. The light-emitting cover portion 134A and the support cover portion 134B are integrally extrusion-molded by a two-color molding method. The cover portion 134 is made of resin, and polycarbonate or acrylic is preferably used.

[0024] Cover portion 134 has a hollow structure in which light-emitting cover portion 134A and support cover portion 134B are integrated, and therefore is lightweight yet has sufficient strength, which prevents bending in the longitudinal direction of cover portion 134. Conventional supports are made up of long, flat plates, which make them prone to bending (bending) in the longitudinal direction, but this has the advantage that even if support cover portion 134B of cover portion 134 tries to bend, light-emitting cover portion 134A, which has side surfaces, does not bend, and therefore the cover as a whole does not bend.

[0025] <Light output cover> The light exit cover portion 134A is formed with a curved surface and has the function of transmitting and appropriately diffusing the light emitted from the light source 133. Note that the light exit cover portion 134A may be made transparent to reduce the diffusivity.

[0026] <Support cover part> As shown in FIG. 3, the support cover portion 134B includes a first flat portion 134B01, an inner protruding portion 134B02, a board 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 reflecting portion 134B08.

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

[0028] Light source substrate 131, which will be described later, is attached in close contact with or close to the lower surface of first flat portion 134B01 (inside support cover portion 134B), and at that time, substrate support portion 134B03, which protrudes inward from the lower end portion of internal protrusion 134B02, which protrudes downward from first flat portion 134B01, supports light source substrate 131. When light source substrate 131 is bonded to first flat portion 134B01, internal protrusion 134B02 and substrate support portion 134B03 may be omitted, but may remain in order to maintain the support state if the adhesive strength decreases.

[0029] One surface of the first flat portion 134B01 and the second flat portion 134B04 is inside the hollow structure, and the other surface is exposed to the outside of the hollow structure. Therefore, heat generated by the light source substrate 131 is easily discharged to the outside through the first flat portion 134B01. Therefore, it is preferable that at least the first flat portion 134B01 is made of a resin with a higher thermal conductivity than 134A and the like. Considering that the product will be manufactured by two-color molding, it is preferable that the entire support cover portion 134B is made of a resin with a higher thermal conductivity than the light-emitting cover portion 134A.

[0030] 3, when the light source unit 130 is pulled up toward the fixture body 110 by the connecting spring portion 135, the third flat portion 134B07 comes into contact with the tip of the long side surface portion 115 of the fixture body 110. The portion from the third flat portion 134B07 to the first flat portion 134B01 is an opaque cover portion, which can eliminate light loss that occurs as it travels from the light source 133 toward the accommodating recess 112. Because the support cover portion 134B is made of resin, it is difficult to make it completely opaque, and it is sufficient if it is less translucent than the light-emitting cover portion 134A, which is translucent.

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

[0032] The reflecting portion 134B08 is a member located between the end of the second flat portion 134B04 and the two-color molding boundary A / B. This member has the effect of re-reflecting light P that is emitted from the light source 133a and reflected back by the light-emitting cover portion 134A, making the light-emitting cover portion 134A shine brightly up to the vicinity of the boundary A / B.

[0033] <Light source board / light source> As shown in Fig. 4, light source substrate 131 has a plurality of light sources 133 made of surface-mounted LEDs arranged in rows at intervals in the longitudinal direction on long printed circuit board 132. The number of rows in which light sources 133 are arranged is two as shown in Fig. 1, but it may also be one row, or three or more rows. In addition to surface-mounted LEDs, COB (Chip On Board) LEDs in which a blue LED chip described below is mounted on a board, or CSP (Chip Scale Package) LEDs may also be used.

[0034] An LED in which a blue LED chip having an InGaN light-emitting layer is sealed with a phosphor-containing sealing resin is preferably used as the light source 133. The emitted light color can be adjusted by the type and amount of phosphor.

[0035] The light source 133 may use, for example, only an LED of one emitting color, or may alternatively be configured with LEDs of two emitting colors (for example, daylight white (color temperature 6500K) and incandescent white (color temperature 2700K)). By using these two LEDs, it is possible to change (adjust) the color to approximately match the blackbody radiation.

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

[0037] Another example of a light source with three luminous colors may be a combination of a red LED, a yellow-white LED, and a blue-white LED, as described below.

[0038] A red LED (R) emits light with a chromaticity in the range enclosed by (0.66, 0.23), (0.423, 0.355), (0.5, 0.5), and (0.736, 0.264) in the CIE 1931 chromaticity coordinates, an example being (0.60, 0.38).

[0039] A yellow-white LED (Yw) emits light with a chromaticity in the range surrounded by the CIE 1931 chromaticity coordinates (0.5, 0.5), (0.423, 0.355), (0.342, 0.312), (0.352, 0.44), (0.37, 0.63) and chromaticity boundaries, such as (0.44, 0.47).

[0040] A bluish-white LED (Bw) emits light with a chromaticity in the range enclosed by (0.336, 0.24), (0.352, 0.44), (0.15, 0.2), and (0.2, 0.1) in the CIE 1931 chromaticity coordinates, an example of which is (0.23, 0.26).

[0041] Compared to B (blue) light, which has a spectrum that is close to monochromatic, Bw (bluish-white) light, which is a mixture of light from other spectra with high relative luminous efficiency, has a higher luminous efficiency. For this reason, using light-emitting elements of the three colors 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 light-emitting elements of the three primary colors R, G, and B.

[0042] <End cap> As shown in FIG. 2, the end cap 140 is a member attached to the short side 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 5(a) and Z B 5(b), which is a top view seen from the left side, the end cap 140 includes 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 an area surrounded 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 to the support cover portion 134B. The fixation of the end cap 140 to the support cover portion 134B will be described later.

[0044] Furthermore, a notch N1 is provided in the end cap 140. The notch N1 is used to insert an LED drive cable 139 required for connecting the light source and the power supply unit 136 (see FIG. 2(b)).

[0045] The material of the end cap 140 is preferably the same resin as that of the light exit cover portion 134A, or a resin with similar light transmissivity.

[0046] <Power supply section> 6 and 9, which are end views of the CC' cross section of FIG. 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 a light source unit-side AC cable 138 into DC power for driving the light source and supplying it to the light source via an LED drive cable 139. The output of the power supply unit 136 may be fixed, or may be controlled externally, and in this case, a control signal from the outside may be received by a wireless module 137.

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

[0048] The power supply mounting portion 136B is a member for holding the main power supply portion 136A and for mounting it to the cover portion 134 of the light source unit. To mount the power supply mounting portion 136B to the rear component mounting portion 134B06, as shown in Fig. 6, fastening members 136F such as screws or rivets are passed through mounting holes 134B09 in the rear component mounting portion 134B06 and holes 136Bc in the power supply mounting portion 136B, and the power supply mounting portion 136B is mounted by the fastening members 136F. Although Fig. 6 shows the fastening members 136F as screws, they may also be rivets.

[0049] <Connecting spring part> 7(a) is a perspective view of the connecting spring portion 135, which is a light source unit-side connecting component, and FIG. 8 is a cross-sectional end view of the light source unit 130 taken along line BB (connecting spring portion) shown in FIG. 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 light source unit-side connecting component that connects the light source unit 130 to the fixture body 110 by engaging with a spring receiver 117 that the fixture body 110 has.

[0050] As shown in FIG. 7(a), the connecting spring portion 135 includes a connecting spring 135A, a spring holding portion 135B, a spring protecting portion 135D, and a fastening member 135F.

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

[0052] The spring holding portion 135B is a member for holding the connecting spring 135A and attaching it to the cover portion 134 of the light source unit. To attach the spring holding portion 135B to the rear component attachment portion 134B06, as shown in FIGS. 7(a) and 8, a fastening member 135F such as a screw or a rivet is passed through the attachment hole 134B09 of the rear component attachment portion 134B06 and the hole 135Bc of the spring holding portion 135B, and the spring holding portion 135B is attached by the fastening member 135F. Note that FIG. 7(a) illustrates the fastening member 135F as a screw, and FIG. 8 illustrates the fastening member 135F as a rivet. However, by regarding the pattern of the portion for inserting the Phillips head screw in FIG. 7(a) as a round shape, it can be considered as a rivet, and by regarding the underside of the fastening member 135F in FIG. 8 as a nut, it can be considered as illustrating the case where the fastening member 135F is a screw and a nut.

[0053] The spring holding portion 135B is formed by bending a metal plate or the like. The spring holding portion 135B includes a plate portion 135Ba, a spring fixing portion 135Bb, a hole portion 135Bc through which the fastening material 135F passes, and an arch portion 135Bd. The plate portion 135Ba is a plate-shaped portion and is fixed to the surface of the support cover portion 134B facing the surface on which the light source board 131 is attached. The spring fixing portion 135Bb is a flat portion on 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 be provided with a thread (tap) for fixing the plate portion 135Ba to the support cover portion 134B (thread is not necessary if fixing with a nut or rivet). The arch portion 135Bd is a portion processed into an arch shape, and the hook portion 135Ad of the connecting spring 135A is inserted into and hooked onto the arch. The protrusion 135Be is a portion that is bent and stands up at the end of the plate portion 135Ba.

[0054] The spring protection part 135D is a metal plate that prevents the spring tip part 135Aa from hitting the support cover part 134B with force due to the spring force and damaging the support cover part 134B, and is a member that was not necessary when the support body was made of metal. The spring protection part 135D is also attached to the rear component attachment part 134B06 of the light source unit with a fastening material 135F.

[0055] Plate portion 135Ba and spring protection portion 135D of spring holding portion 135B are attached to rear component mounting portion 134B06 of the cover portion by fastening material 135F, and at this time, plate portion 135Ba and rear component mounting portion 134B06 of cover portion 134 are in surface contact within a distance W, thereby dispersing the force and preventing cracking and fatigue of cover portion 134.

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

[0057] <Device body> 9 is a perspective view showing the lighting fixture 100 with the light source unit 130 and the fixture body 110 separated. The fixture body 110 includes a housing 111, and a spring bearing 117 and a terminal block 118 arranged on a bottom surface 114 of the housing 111.

[0058] As shown in the cross-sectional view of FIG. 3, the housing 111 has a long bottom surface portion 114 and a Z-axis extending from the long side of the bottom surface portion 114. F The two long side portions 115 extend in the X direction. F An accommodating recess 112 is formed in the housing 111, which opens in the direction of the light source unit and can accommodate rear components of the light source unit.

[0059] The bottom surface portion 114 is provided with an electric light wire insertion hole 120A for passing electric wires such as an electric light wire 198 that is exposed from the ceiling 190 and that supplies power to the lighting fixture 100. The bottom surface portion 114 also has two fixture mounting holes 120B near both ends in the longitudinal direction for passing hanger bolts 196 that are exposed from the ceiling 190 or screws that attach the fixture body to a reinforcing portion of the ceiling 190. When fixing with hanger bolts, as shown in FIG. 9 , the hanger bolts 196 are passed through the fixture mounting holes 120B, and then nuts 197 (which may be used in combination with washers or spring washers) are tightened onto the hanger bolts 196, thereby fixing the fixture body 110 to the ceiling 190.

[0060] <Spring support> 10 shows a perspective view of the spring bearing, which is a connecting part on the fixture body side, for integrating the light source unit and the fixture body by connecting with the connecting spring part 135, which is a connecting part on the light source unit side. As shown in FIG. 10, the spring bearing 117 has a spring bearing fixing part 117A attached to the bottom part 114 of the fixture body, and a spring bearing fixing part 117B extending from the bottom part to the Z direction. F The spring receiver 117 has a spring receiver main portion 117B that protrudes in the direction of the arrow B, and the spring receiver main portion 117B has a hook portion 117D and a spring insertion hole 117C. The hook portion 117D has a wide, flat hook shape, and in a light source unit locked state described below, a frame portion 135Ab (see FIG. 6) of the connecting spring 135A is hooked onto the hook portion 117D. The spring insertion hole 117C is a substantially rectangular hole, and in a light source unit installed state described below, the frame portion 135Ab of the connecting spring 135A is inserted into the spring insertion hole 117C. The spring receiver 117 is usually formed by punching, bending, or the like, a metal plate.

[0061] <Terminal block / lighting wire insertion hole> Terminal block 118 provided on bottom surface 114 has the function of connecting electric light wire 198 that has entered the inside of the fixture body through electric light wire insertion hole 120A, and also connecting fixture body side AC cable 119 that is connected to power supply unit 136.

[0062] <Mounting holes> 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 the suspension bolts 196 through the fixture mounting holes 120B and tightening the nuts 197. After the suspension bolts 196 are passed through the fixture mounting holes 120B, the fixture body 110 is fixed to the ceiling 190 by tightening the nuts 197 onto the suspension bolts 196.

[0063] <Assembly of the light source unit> (1) Mounting 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 part 134B from the opening on the side so that the long side of the light source substrate 131 and its vicinity are positioned within the area surrounded by the first flat part 134B01, the internal protrusion part 134B02, and the substrate support part 134B03 of the support cover part 134B shown in Figure 3.

[0064] (2) Attaching (using screws or rivets) the rear components (the connecting spring 135, the spring protection part 135D, and the power supply part 136) to the support cover part 134B The attachment of the rear part will be explained using the connecting spring part 135 as an example. In order to attach the connecting spring part 135 to the support cover part 134B, the Y of the cover part 134 F or Y B 6 is slid from the side so that the plate portion 135Ba of the connecting spring portion 135 shown in FIG. 6 is positioned between the second flat portion 134B04 of the support cover portion 134B and the rear component mounting portion 134B06 shown in FIG. 7. Then, the hole portion 135Bc of the spring holding portion 135B of the connecting spring portion 135 is aligned with the mounting hole 134B09 of the rear component mounting portion 134B06, and the Z B A fastening member 135F is attached to the attachment hole 134B09 from the side.

[0065] If fastening member 135F is a rivet, there is no need to provide a thread in attachment hole 134B09. If fastening member 135F is a screw, a nut may be placed under plate portion 135Ba and the screw and nut may be tightened.

[0066] Compared to screws, riveting has the advantage of simplifying the work, but the disadvantage is that the rivets can deform, making it impossible to remove the rear part. Therefore, it is best to decide which fastening method to use, taking into account the need to remove the rear part for repairs, etc. Other fastening methods, such as adhesives or belt fastening, may also be used.

[0067] (3) Connecting the LED drive cable 139 to the power supply unit 136 An LED drive cable 139 is connected to an end of the light source board 131. This is led out of the hollow cover part 134 through the notch N1 in the end cap and connected to the power supply part 136.

[0068] (4) Attaching the end cap 140 to the cover portion 134 Referring to FIG. 5, the end cap 140 is attached to the opening of the cover portion 134 so that the frame portion 142 of the end cap 140 is placed inside the hollow cover portion 134 .

[0069] Here, a through-hole is provided in the support cover portion 134B at a portion that overlaps with the through-hole of the fixing portion 143b. In this state, a tapping screw is fastened 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, and 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] <Installing the fixture body on the ceiling, and attaching the light source unit to the fixture body> The lighting fixture 100 is installed on the ceiling in the following procedure. Note that the lighting fixture 100 may also be installed on a bar metal fitting such as a raceway instead of the ceiling.

[0071] (1) Referring to Fig. 9, two suspension bolts 196 extending from the ceiling side are passed through the fixture mounting holes 120B of the fixture body 110, and nuts 197 are tightened to fix the fixture body 110 to the ceiling 190. Note that the fixture body 110 may also be fixed by screwing it into a reinforcing portion of the ceiling 190 with screws from below the fixture mounting holes 120B without using suspension bolts.

[0072] (2) The electric light wire 198 on the ceiling 190 side is passed through the electric light wire insertion hole 120A and connected to the terminal block 118.

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

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

[0075] (5) Light source unit 130 is pushed upward. This causes connecting spring 135A to enter spring insertion hole 117C of spring receiver 117. Light source unit 130 is pulled up by the force of the spring, and support cover portion 134B of light source unit 130 is pressed against and comes into contact with fixture body 110. This state is lighting fixture 100 shown in FIG. 1 and is referred to as the "light source unit installed state."

[0076] <Modifications of the cover part> 11(a), (b), and (c) are cross-sectional views of cover parts 234, 334, and 434, which are modifications of cover part 134. The positions of mounting holes 234B09, 334B09, and 434B09, which are parts equivalent to mounting hole 134B09, are shown by dashed dotted lines in rear component mounting part 234B06, rear component mounting part 334B06, and rear component mounting part 434B06, respectively.

[0077] 11(a), a third flat portion 234B07 corresponding to the third flat portion 134B07 is connected to the middle portion of a spacer portion 234B05 corresponding to the spacer portion 134B05. Therefore, the distance between the light source and the cover portion 234 is slightly wider than in the case of the cover portion 134. A rear component mounting portion 234B06 extends inward from the tip of the spacer portion 234B05.

[0078] 11(b), a third flat portion 334B07 corresponding to the third flat portion 134B07 is connected to the lower end of a spacer portion 334B05 corresponding to the spacer portion 134B05. Therefore, the distance between the light source and the cover portion 234 is wider than in the case of the cover portion 134. A rear component mounting portion 334B06 extends inward from the tip of the spacer portion 234B05.

[0079] 11(c), a third flat portion 434B07 corresponding to the third flat portion 134B07 is connected to a second flat portion 434B04 corresponding to the second flat portion 134B04, and a rear component mounting portion 434B06 extends upward from the connecting portion in the figure. Mounting of a rear component to such a vertically extending rear component mounting portion will be described in detail in embodiment 3.

[0080] <Embodiment 2> <Summary> The lighting fixture 500 according to this embodiment has a narrower width in the X direction than the lighting fixture 100, and has a shape that takes design into consideration. The lighting fixture 500 is configured by attaching a light source unit 530 to a lighting fixture body 510.

[0081] <Light source unit> The light source unit 530 is X F 12(a) and Z B 12(b), which is a top view from the direction, the light source unit 530 includes a cover part 534, a power supply part 536, and a connecting spring part 535. As the width of the light source unit 530 is narrower, the power supply mounting part 536B is provided in the Y direction instead of the X direction of the main power supply part 536A.

[0082] <Cover> FIG. 13 is a cross-sectional view showing only the essential parts of lighting fixture 500 taken along line AA in the vicinity of power supply unit 536 shown in FIG. 12(b).

[0083] The cover portion 534 is a hollow member 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 a light diffusing material is dispersed therein as appropriate. The support cover portion is white so as to have almost no translucency, but may be colored other colors such as gray or black by using a resin with high thermal conductivity. The light-emitting cover portion 534A and the support cover portion 534B are integrally extrusion-molded by a two-color molding method. The cover portion 534 is made of 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, and therefore, the cover portion 534 is lightweight yet is prevented from bending in the longitudinal direction.

[0085] <Light output cover> The light exit cover portion 534A has flat sides and a front surface, and has the function of transmitting and appropriately diffusing the light emitted from the light source 533. Note that the light exit cover portion 534A may be made transparent to reduce the diffusivity.

[0086] <Support cover part> As shown in FIG. 13, the support cover portion 534B includes a first flat portion 534B01, an internal protrusion 534B02, a board 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 attachment portion 534B06 protrudes from the spacer portion 534B05 and the third flat portion 534B07 that form the outer periphery of the hollow cover portion 534, and is not a part that forms the hollow structure.

[0088] One surface of the first flat portion 534B01 and the second flat portion 534B04 is inside the hollow structure, and the other surface is exposed to the outside of the hollow structure. Therefore, heat generated by the light source substrate 531 is easily discharged to the outside through the first flat portion 534B01. Therefore, it is preferable that at least the first flat portion 534B01 is made of a resin with a higher thermal conductivity than 534A and the like. Considering that the product will be manufactured by two-color molding, it is preferable that the entire support cover portion 534B is made of a resin with a higher thermal conductivity than the light-emitting cover portion 534A.

[0089] The rear component mounting portion 534B06 is spaced apart from the second flat portion 534B04 by a spacer portion 534B05, and is adapted to receive a mounting plate 536G having a threaded (tapped) hole.

[0090] <Light source board> The light source board 531 is configured by arranging a plurality of light sources 533, each made of surface-mounted LEDs, in rows spaced apart in the longitudinal direction on a long printed circuit board 532. The number of rows in which the light sources 533 are arranged is one, as shown in FIG.

[0091] <Device body> The device body 510 includes a housing 511, and a spring receiver 117 and a terminal block 118 arranged on a bottom surface 514 of the housing 511.

[0092] As shown in the cross-sectional view of FIG. 13, the housing 511 has a long bottom surface portion 514 and a Z-axis extending from the long side of the bottom surface portion 514. F The two long side portions 515 extend in the X direction. F The housing recess 512 is formed in the Z direction and can house the rear components of the light source unit. Also, a protrusion 521 is provided near the opening of the long side surface portion 515. A connecting spring portion 535 is provided to B The contact portion 534B10 of the light source unit that is pulled up in the direction comes into contact with the protrusion 521, thereby fixing the light source unit.

[0093] <Power supply unit and its installation on the support cover> Referring to FIG. 13, power supply unit 536, which is one of the rear components, has the function of converting 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 includes 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, using 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. Note that rivets may be used instead of screws for attachment, in which case the mounting plate 536G is not required.

[0095] <Connecting spring part and its attachment to the support cover part> The spring holding portion 535B of the connecting spring portion 535 is also attached to the support cover portion 534B in the same manner as the power supply attachment portion 536B is attached to the support cover portion 534B.

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

[0097] <Cover> FIG. 14 is a cross-sectional view showing only the essential parts in the vicinity of the power supply section 536 of the light source unit 550.

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

[0099] <Fastening the power supply unit to the support cover> As shown in FIG. 13, the support cover portion 534B is formed by extending from the third flat portion 534B07 in the vertical direction (Z BThe rear component attachment portion 534B11 is provided with an attachment hole 534B11H.

[0100] <Power supply unit and its installation on the support cover> Referring to FIG. 14, the power supply mounting portion 536T is attached to a nut 536N using a fastening material 536F such as a screw through a mounting hole 534B11H provided in the rear component mounting portion 534B11 of the support cover portion 534B. Note that rivets may be used instead of screws, in which case the nut 536N is not required. The power supply mounting portion 536T is attached to the Z of the main power supply portion 536A. F Side and Z B Since two mounting points are provided on the side, a sufficiently stable mounting is possible, but mounting can also be performed at other locations.

[0101] It should be noted that for other rear components such as connecting springs, a portion corresponding to the power supply mounting portion 536T extending vertically can be provided, and they can be mounted using the rear component mounting portion 534B11 of the light source unit.

[0102] <Modifications and other changes> The above describes an embodiment of the lighting fixture according to the present invention, but the lighting fixture exemplified can also be modified, for example, as described below, and it goes without saying that the present invention is not limited to the lighting fixture as shown in the above embodiment.

[0103] The light source unit in the embodiment is used in combination with the fixture body, but 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 an attachment target such as a ceiling without using the fixture body.

[0104] The cross-sectional shape of the hollow cover is not limited to a closed hollow shape, and may have a hole or may have a notch in the X direction that is shorter than the width in the X direction or a notch in the Y direction that is 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, but an independent communication unit (having the same functions as the wireless module) may be attached to the cover unit as a rear component, and in this case, the attachment portion of the communication unit (the portion corresponding to the power supply attachment portion 136B) can be attached to the "rear component attachment portion 134B06" of the cover unit.

[0106] The fixture body has been described using an inverted Fuji shape in embodiment 1 and a trough shape in embodiments 2 and 3, but in any of the embodiments, the fixture body may be an inverted Fuji shape, trough shape, open bottom type, or other shape.

[0107] The light source may be mounted on the surface of the light source substrate, or, for example, the light source 133 may be mounted directly on the support cover portion 134B without using the light source substrate 131.

[0108] The substrate is not limited to a printed circuit board, but may be a metal core substrate (a substrate in which an insulating film is provided on the surface of a metal plate and a wiring pattern is provided on top of that) or a ceramic substrate with a wiring pattern formed on its surface. In this way, the material of the substrate is not particularly limited. In addition, the board part of a COB type LED or the package part of a surface-mounted LED may serve as the substrate, eliminating the need for a printed circuit board.

[0109] The boundary A / B of the two-color molding of the cover is Z of the light source. B The light output cover part (A) is in the Z direction of the light source. F If there is a support cover part (B) in the direction, it may be installed anywhere along the way.

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

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

[0112] Although the connecting spring is a linear double torsion spring, any shape is acceptable, such as a curved plate spring. As long as it is a member for connecting, it does not have to be elastic.

[0113] The configuration of each part of the present invention is not limited to the above-described embodiment and modified examples, and various modifications are possible within the technical scope of the claims. For example, the configuration of each part of the lighting fixture described above can be applied to various lighting fixtures, not limited to LED lighting fixtures.

[0114] The above-described embodiments and modifications may be partially combined. [Explanation of symbols]

[0115] 100, 500 lighting fixtures 110, 510 fixture body 111, 511 enclosure 112, 512 Receiving recess 113 Reflector section 114, 514 Bottom part 115, 515 Long side 116 Short side part 117 Spring holder (connecting part on the fixture body side) 117A Spring holder fixing part 117B Spring bearing main part 117C Spring insertion hole 117D Hook part 118 Terminal block 119 AC cable on the device body 120A power line insertion hole 120B Fixture mounting hole 521 Protrusion 130, 530, 550 light source unit 131, 531 Light source board 132, 532 printed circuit board 133, 533 light source 134, 234, 334, 434, 534 Cover 134A, 534A Light output cover 134B, 534B support cover 134B01 1st flat part 134B02, 534B02 Internal protrusion 134B03, 534B03 Board support part 134B04 2nd flat part 134B05, 234B05, 334B05, 534B05 spacer part 134B06, 234B06, 334B06, 434B06, 534B06, 534B11 Rear component mounting section 134B07 3rd flat part 134B08 Reflector 134B09, 234B09, 334B09, 434B09, 534B06H, 534B11H, 536BH, 536GH Mounting holes 534B10 Contact part 135, 535 Connecting spring part 135A Connecting spring (rear part, connecting part on the light source unit side) 135Aa Spring tip 135Ab frame part 135Ac Coil spring part 135Ad Latch part 135B, 535B spring retainer 135Ba plate part 135Bb spring fixing part 135Bc Hole 135Bd Arch 135Be protrusion 135D 135D2 Spring protection part 135F, 136F, 536F fasteners 136, 536 Power supply unit (rear part) 136A, 536A main power supply 136B, 536B, 536T power supply mounting part 136Bc Hole 536G Mounting Plate 536N Nut 137 Wireless Module 138 Light source unit side AC cable 139 LED drive cable 140 End Cap 141 Lid 142 Frame 143a Screw receiving part 143b Fixed part 143c through hole 170 Lighting control device 171 Lighting Control Program 178 Wireless 190 Ceiling 196 Hanging bolt 197 Nut 198 Electric Light Line

Claims

1. A light source unit including a resin cover having a hollow structure, a light source substrate attached to the inside of the cover, and a rear component, the light source substrate includes a substrate and a light source; the cover portion is configured by integrally molding a light-emitting cover portion made of resin that emits light emitted from the light source and a support cover portion made of resin that supports the light source substrate, a rear component mounting portion, which is a part of the support cover portion and to which the rear component can be attached, protrudes in parallel with a flat portion of the support cover portion to which the light source board is attached; a part of a member and a fastening material constituting the rear component are inserted into a space between the flat portion and the rear component mounting portion, thereby mounting the rear component to the rear component mounting portion; Light source unit.

2. The rear component mounting portion has a through hole formed therein for mounting the rear component. The light source unit according to claim 1 .

3. The light source unit according to claim 1 , wherein the rear part is at least one part selected from the group consisting of a power supply, a light source unit side connecting part, a communication unit, and a spring protection part.

4. A lighting fixture having a fixture body with a fixture body side connecting component and a light source unit, the light source unit includes a resin cover having a hollow structure, a light source substrate attached to the inside of the cover, and a rear component; the light source substrate includes a substrate and a light source; the cover portion is configured by integrally molding a light-emitting cover portion made of resin that emits light emitted from the light source and a support cover portion made of resin that supports the light source substrate, a rear component mounting portion, which is a part of the support cover portion and to which the rear component can be attached, protrudes in parallel with a flat portion of the support cover portion to which the light source board is attached; a plate portion and a part of a fastening material that constitute the rear component are inserted into a space between the flat portion and the rear component attachment portion, thereby attaching the rear component to the rear component attachment portion; the rear component includes a light source unit side connecting component, The fixture body and the light source unit are connected by connecting the fixture body side connecting part and the light source unit side connecting part. Lighting fixtures.

Images