Light source unit and lighting fixture

Abstract

To provide a lighting device which solves a problem of heat radiation of a light source unit and a problem of attachment of a back surface component and achieves reduction of the weight.SOLUTION: A light source unit includes: a cover part having a hollow structure; and a light source substrate attached to the interior of the cover part. The light source substrate includes a substrate and a light source. In the cover part, a light emission cover part which emits light emitted from the light source and a support cover part which supports the light source substrate are integrated. The light emission cover part has light transmissivity. The support cover part has low light transmissivity compared to the light emission cover part. At the inner side of the support cover part, a flat part for attaching the light source substrate is provided. The outer side of the flat part is exposed to the outside of the hollow structure. The light source substrate is attached closely contacting with or located close to the flat part. A back surface component may be attached to the outer side of the support cover part.SELECTED DRAWING: Figure 3

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 a fixture body and a light source unit are separable.

Background Art

[0002] One of the lighting fixtures arranged on the ceiling includes a light source unit and a fixture body having a recess for accommodating the light source unit (see Patent Document 1). In this lighting fixture, when the mounting spring provided in the light source unit is hooked on the spring receiver provided in the fixture body, the light source unit is pulled toward the lighting fixture side by the elastic force of the mounting spring, and the light source unit is accommodated in the fixture body.

[0003] The lighting fixture described in Patent Document 2 includes a fixture body and a light emitting module. In the light emitting module, a 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

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the lighting fixture of Patent Document 1, there is a problem that the weight of the light source unit is heavy. The reason is that the support for mounting the substrate on which the LEDs are mounted is made of metal.

[0006] On the other hand, in the lighting fixture of Patent Document 2, since an enclosure made of a translucent resin is used, there is no component corresponding to a metal support. However, for the purpose of maintaining strength and ensuring heat dissipation, a light-emitting module provided with vertical louvers is arranged, and it is considered that sufficient weight reduction has not been achieved.

[0007] The metal support not only supports the LED mounting substrate on the front surface but also attaches back surface components such as connection components with the power supply and the fixture body on the back surface. At that time, holes tapped in the metal support were provided, screws were inserted into the holes and tightened to fix the back surface components. As a problem when the support is made of resin, it is impossible to provide holes tapped in the resin for fixing due to the problem of the strength of the resin. Further, as a problem when the support is made of resin with a hollow structure integrated with the front cover, it is difficult to insert a tool into the hollow part of the support to attach the back surface components.

[0008] The present invention has been made in view of such problems, and an object thereof is to provide a lighting fixture that solves the problems of heat dissipation of the light source unit and attachment of back surface components and achieves weight reduction.

Means for Solving the Problems

[0009] In order to solve the above problems, the present invention A light source unit including a resin cover portion, a light source substrate, and a back component, wherein the light source substrate includes a substrate and a light source, the cover portion has a hollow structure in which a resin light-emitting cover portion that emits light emitted from the light source and a resin support cover portion that supports the substrate are integrated, the light source substrate is attached in close contact with or in proximity to a flat portion provided inside the support cover portion, and the outside of the flat portion is exposed to the outside, the support cover portion includes a resin back-component attachment portion that protrudes outside the hollow structure, and the back component can be attached to the back-component attachment portion, an attachment hole that penetrates is formed in the back-component attachment portion.

[0010] In the present invention, the back-component attachment portion may protrude in a direction parallel to the flat portion.

[0011] In the present invention, the back surface component mounting portion may be formed with holes for mounting the back surface components.

[0012] In the present invention, the back part component may be at least one component selected from a power source, a light source unit side connection component, a communication unit, and a spring protection part.

[0013] The present invention relates to a lighting fixture including an appliance main body having an appliance main body side connection component and a light source unit. The light source unit includes a resin cover portion, a light source substrate, and a back component, wherein the light source substrate includes a substrate and a light source, the cover portion has a hollow structure in which a resin light-emitting cover portion that emits light emitted from the light source and a resin support cover portion that supports the substrate are integrated, the light source substrate is attached in close contact with or in proximity to a flat portion provided inside the support cover portion, and the outside of the flat portion is exposed to the outside, the support cover portion includes a resin back-component attachment portion that protrudes outside the hollow structure, and the back component can be attached to the back-component attachment portion the back component includes a light source unit side connection component, an attachment hole that penetrates is formed in the back-component attachment portion, by connecting the appliance body side connection component and the light source unit side connection component, the appliance body and the light source unit are integrated, It is a lighting fixture.

[0014] The present invention relates to a lighting fixture including an appliance main body having an appliance main body side connection component and a light source unit. The light source unit includes a cover part, a light source substrate, and a back part component. The light source substrate includes a substrate and a light source. The cover part has a hollow structure in which a light emission cover part that emits light emitted from the light source and a support cover part that supports the substrate are integrated. The light source substrate is provided inside the support cover part. The back part component is attached to a back part component attachment part of the support cover part that protrudes outside the hollow structure. The back part component includes a light source unit side connection component. It is a lighting fixture.

[0015] The present invention relates to a lighting fixture including an appliance main body having an appliance main body side connection component and a light source unit. The light source unit includes a cover part, a light source substrate, and a back part component. The light source substrate includes a substrate and a light source. The cover part has a hollow structure in which a light emission cover part that emits light emitted from the light source and a support cover part that supports the substrate are integrated. The light source substrate is provided inside the support cover part, The back part components include connection components on the light source unit side. The support cover part has lower light transmittance compared to the light emitting cover part, and the support cover part is attached in contact with the appliance body. It is a lighting fixture.

Advantages of the Invention

[0016] In the light source unit according to the present invention, the light source substrate is attached inside the support cover part of the cover part with a hollow structure in which the light emitting cover part and the support cover part are integrated, and since the outside of the support cover part is exposed, it can ensure heat dissipation while being lightweight without using metal.

[0017] Also, the light source unit according to the present invention includes a cover part with a hollow structure in which the light emitting cover part and the support cover part are integrated, and by providing a back part component mounting part that protrudes from the support cover part, back part components such as connection components of the light source unit can be mounted.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Mode for Carrying Out the Invention

[0019] <Embodiment 1> <Overview> The 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 viewed obliquely downward. 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 as an example of an attachment target, and irradiates light toward the indoor side.

[0020] The lighting fixture 100 can also be installed on a wall surface or a floor surface. However, no matter in which direction it is installed, for the lighting fixture 100, the Z F -Z B direction and the like are denoted, and for the sake of clarity, the Z B direction may be denoted as downward. That is, notations such as downward are terms for explaining the direction of the lighting fixture and , heavy have nothing to do with the downward direction of the force.

[0021] In addition, each drawing referred to in this specification is schematically represented by omitting a part of the configuration, exaggerating, etc. in order to facilitate the understanding of the present invention. Further, when explaining the configuration of parts having a bilaterally symmetric shape, in cases where the same explanation is clearly repeated, the explanation may be given only for one of the left and right to avoid repetition.

[0022] <Lighting control device> The lighting control device 170 in FIG. 1 consists of a tablet, smartphone, PC, etc., and a lighting control program 171 (not shown) is installed. The user can operate the lighting control program 171 to communicate with the lighting fixture 100 via wireless 178 and change the lighting conditions. The lighting conditions include color (color tuning), brightness (dimming), and on / off, and in addition to manual control, schedule operation can be performed to automatically change the lighting conditions at the set time according to a pre-registered schedule.

[0023] The lighting control device 170 is not essential. Even when the lighting control device 170 is not provided, the lighting fixture 100 can be turned on / off by turning on / off the power line of the electric lamp. The lighting control device may be a wired control method.

[0024] <Light source unit> 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 the upper side, the light source unit 130 includes a cover portion 134, a power supply portion 136, and a connecting spring portion 135.

[0025] <Cover portion> FIG. 3 shows a cross-sectional view of the cut end surface including the appliance body 110 along the line A-A shown in FIG. 2(b).

[0026] The cover portion 134 is a member having a hollow structure composed 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 appropriately disperses a light diffusing material. The support cover portion is white so as to have almost no translucency, but may be colored in other colors such as gray or black by using a resin having a 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.

[0027] Since the cover part 134 has a hollow structure in which the light-emitting cover part 134A and the support cover part 134B are integrated, it is lightweight and has sufficient strength, thereby suppressing the deflection in the longitudinal direction of the cover part 134. Since the conventional support was composed of a long flat plate, it was likely to bend (deflect) in the longitudinal direction. However, even if the support cover part 134B of the cover part 134 tries to bend, the light-emitting cover part 134A having side surfaces does not bend, so there is an advantage that the whole does not deflect.

[0028] <Light-emitting cover part> The light-emitting cover part 134A is formed by a curved surface and has a function of transmitting and appropriately diffusing the light emitted by the light source 133. Note that it may be made transparent by suppressing the diffusibility.

[0029] <Support cover part> As shown in FIG. 3, the support cover part 134B includes a first flat part 134B01, an internal protruding part 134B02, a substrate support part 134B03, a second flat part 134B04, a spacer part 134B05, a back part component mounting part 134B06, a third flat part 134B07, and a reflection part 134B08.

[0030] The back part component mounting part 134B06 protrudes outward from the second flat part 134B04 and the third flat part 134B07 that form the outer periphery of the cover part 134 having a hollow structure, and is not a part that forms the outer periphery of the hollow structure.

[0031] The light source substrate 131 described later is attached in close contact with or in proximity to the lower surface of the first flat part 134B01 (inside the support cover part 134B). At this time, the substrate support part 134B03 that protrudes inward from the lower end part of the internal protruding part 134B02 that protrudes downward from the first flat part 134B01 supports the light source substrate 131. Note that when the light source substrate 131 is adhered to the first flat part 134B01, the internal protruding part 134B02 and the substrate support part 134B03 may be omitted, but they may be left to maintain the support state when the adhesive force decreases.

[0032] The first flat portion 134B01 and the second flat portion 134B04 have one side inside the hollow structure and the other side exposed outside the hollow structure. Therefore, the heat generated by the light source substrate 131 is easily discharged to the outside through the first flat portion 134B01. Therefore, at least the first flat portion 134B01 is preferably made of a resin having a higher thermal conductivity than 134A or the like. Considering manufacturing by two-color molding, it is preferable that the entire support cover portion 134B is made of a resin having a higher thermal conductivity than the light-emitting cover portion 134A.

[0033] Referring to FIG. 3, when the light source unit 130 is pulled up to the appliance main body 110 side by the connecting spring portion 135, the third flat portion 134B07 is in contact with the tip of the long side surface portion 115 of the appliance main body 110. Since the portion from the third flat portion 134B07 to the first flat portion 134B01 is an opaque cover portion, light that becomes loss from the light source 133 toward the accommodation recess 112 can be eliminated. Since the support cover portion 134B is made of resin, it is difficult to make it completely opaque, and it is sufficient that the light transmissivity is less than that of the light-emitting cover portion 134A having light transmissivity.

[0034] The back part component mounting portion 134B06 is provided at a distance from the second flat portion 134B04 by the spacer portion 134B05 so that a support portion (such as the spring holding portion 135B) of the back part can enter.

[0035] The reflecting portion 134B08 is a member located between the end of the second flat portion 134B04 and the boundary A / B of the two-color molding. This member has the effect of re-reflecting the light P emitted from the light source 133a and reflected back by the light-emitting cover portion 134A, and making the light-emitting cover portion 134A bright up to the vicinity of the boundary A / B.

[0036] <Light source substrate · Light source> As shown in FIG. 4, the light source substrate 131 has a plurality of light sources 133 each formed of a surface-mount type LED arranged in a row at intervals in the longitudinal direction on a long printed circuit board 132. The number of rows in which the light sources 133 are arranged is two rows as shown in FIG. 1, but it may be one row or three or more rows. In addition to the surface-mount type LED, a COB (Chip On Board) type LED or a CSP (Chip Scale Package) type LED having the following blue LED chips mounted on the substrate may be used.

[0037] As the light source 133, an LED in which a blue LED chip having an InGaN light-emitting layer is encapsulated with a phosphor-containing encapsulating resin is preferably used. The emission color can be adjusted according to the type and amount of the phosphor.

[0038] As the light source 133, for example, only an LED of one emission color may be used, or LEDs of two emission colors (for example, daylight white (color temperature 6500K) and incandescent color (color temperature 2700K)) may be alternately arranged. By using these two LEDs, it is possible to change (color-tune) the color along substantially blackbody radiation.

[0039] Furthermore, LEDs of three emission colors may be arranged so that the colors are mixed. For example, by using LEDs of three colors of red (R), green (G), and blue (B), a very wide range of emission colors can be obtained.

[0040] As another example of the light source of three emission colors, a combination of the following red LED, yellowish-white LED, and bluish-white LED may be used.

[0041] The red LED (R) emits light at a chromaticity within the range surrounded by (0.66, 0.23), (0.423, 0.355), (0.5, 0.5), and (0.736, 0.264) in the CIE1931 chromaticity coordinates, and is, for example, (0.60, 0.38).

[0042] The yellowish-white LED (Yw) emits light at chromaticities within the range enclosed by (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 in the CIE1931 chromaticity coordinates, and is, for example, (0.44, 0.47).

[0043] The bluish-white LED (Bw) emits light at chromaticities within the range enclosed by (0.336, 0.24), (0.352, 0.44), (0.15, 0.2), (0.2, 0.1) in the CIE1931 chromaticity coordinates, and is, for example, (0.23, 0.26).

[0044] Compared with the light of B (blue) having a spectrum close to a single color, the light of Bw (bluish-white) in which light of other spectra with higher relative luminous efficiency is mixed has higher luminous efficiency. Therefore, when using a three-color light-emitting element of R·Yw·Bw, compared with the case of using a three-primary-color light-emitting element of R·G·B, it has the advantage that the power luminous flux conversion efficiency (lm / W) can be made relatively good.

[0045] <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.

[0046] Y in FIG. 2(a) B The end cap 140 attached to the side end is Y F FIG. 5(a) which is a front view seen from the direction and Z BAs shown in Fig. 5(b) which is a top view seen from a certain direction, it 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 the region 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 and fitted into a groove provided in the support cover portion 134B, and is provided with a through hole 143c having a larger hole diameter than the through hole of the screw receiving portion 143a. The screw receiving portion 143a and the fixing portion 143b are used for fixing 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.

[0047] Also, a notch N1 is provided in the end cap 140. The notch N1 is used for inserting the LED driving cable 139 necessary for connecting the light source and the power supply unit 136 (see Fig. 2(b)).

[0048] As the material of the end cap 140, the same resin as the light emitting cover portion 134A or a resin with similar light transmittance is preferable.

[0049] <Power Supply Unit> Referring to Figs. 6 and 9 which are end views of the C-C' cut portion 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 back components, has the function of converting the AC power supplied from the light source unit side AC cable 138 into DC power for driving the light source and supplying it to the light source through the LED driving cable 139. The output of the power supply unit 136 may be fixed or may be controlled from the outside. In that case, the control signal from the outside may be received by the wireless module 137.

[0050] The power supply unit 136 mainly consists of a power supply main unit 136A and a power supply mounting portion 136B. The power supply mounting portion 136B is attached to the back component mounting portion 134B06 of the support cover portion 134B using a fastening member 136F such as a screw or a rivet.

[0051] The power supply attachment part 136B is a member that holds the main power supply part 136A and is attached to the cover part 134 of the light source unit. In order to attach the power supply attachment part 136B to the back part component attachment part 134B06, as shown in Fig. 6, a fastening material 136F such as a screw or a rivet is passed through the attachment hole 134B09 of the back part component attachment part 134B06 and the hole part 136Bc of the power supply attachment part 136B, and is attached by the fastening material 136F. Note that Fig. 6 shows the fastening material 136F as a screw, but a rivet may also be used.

[0052] <Connecting spring part> A perspective view of the connecting spring part 135, which is a connecting part on the light source unit side, is shown in Fig. 7(a), and an end face view of the cut part in the B - B line (connecting spring part) shown in Fig. 2(b) of the light source unit 130 is shown in Fig. 8. The connecting spring part 135, which is one of the back parts, is attached to the upper surface of the support cover part 134B and engages with the spring receiver 117 of the appliance main body 110, thereby connecting the light source unit 130 to the appliance main body 110. It is a connecting part on the light source unit side.

[0053] As shown in Fig. 7(a), the connecting spring part 135 includes a connecting spring 135A, a spring holding part 135B, a spring protection part 135D, and a fastening material 135F.

[0054] The connecting spring 135A is, for example, a double torsion spring and is formed by bending a spring wire or the like. The connecting spring 135A includes a spring tip part 135Aa, a frame part 135Ab connected from the spring tip part, a coil spring part 135Ac continuously bent in a coil shape to the frame part, and a latching part 135Ad which is a rod - shaped part continuously connected to the coil spring part and latched to the spring holding part 135B.

[0055] The spring holding part 135B is a member for holding the connecting spring 135A and attaching it to the cover part 134 of the light source unit. In order to attach the spring holding part 135B to the back part component mounting part 134B06, as shown in FIGS. 7(a) and 8, a fastening member 135F such as a screw or a rivet is passed through the mounting hole 134B09 of the back part component mounting part 134B06 and the hole part 135Bc of the spring holding part 135B, and is attached by the fastening member 135F. Note that FIG. 7(a) shows the case where the fastening member 135F is a screw, and FIG. 8 shows the case where the fastening member 135F is a rivet. However, by regarding the pattern of the part where the plus screw is inserted in FIG. 7(a) as a round shape, it can be regarded as a rivet, and by regarding the lower side of the fastening member 135F as a nut in FIG. 8, it can be regarded as showing the case where the fastening member 135F is a screw and a nut.

[0056] The spring holding part 135B is formed by bending a metal plate or the like. The spring holding part 135B includes a plate part 135Ba, a spring fixing part 135Bb, a hole part 135Bc through which the fastening member 135F passes, and an arch part 135Bd. The plate part 135Ba is a plate-like part and is fixed to the surface facing the surface to which the light source substrate 131 of the support cover part 134B is attached. The spring fixing part 135Bb is a flat plate-like part to which the coil spring part 135Ac of the connecting spring 135A is hooked. The hole part 135Bc is a hole provided in the plate part 135Ba, and a screw thread (tap) for fixing the plate part 135Ba and the support cover part 134B may be cut (the screw thread is not necessary in the case of nut fixing or rivet fixing). The arch part 135Bd is a part processed in an arch shape, and the hooking part 135Ad of the connecting spring 135A is inserted and hooked inside the arch. The protruding part 135Be is a part that is bent and erected at the end of the plate part 135Ba.

[0057] The spring protection part 135D is a metal plate for preventing the spring tip part 135Aa from hitting the support cover part 134B vigorously due to the force of the spring and damaging the support cover part 134B, and is a member that was not necessary when the support was made of metal. The spring protection part 135D is also attached to the back part component mounting part 134B06 of the light source unit by the fastening member 135F.

[0058] The plate portion 135Ba of the spring holding portion 135B and the spring protection portion 135D are attached to the component mounting portion 134B06 on the back surface of the cover portion by the fastening member 135F. At this time, since the plate portion 135Ba and the component mounting portion 134B06 on the back surface of the cover portion 134 are in surface contact within the range of the distance W, the force is dispersed, so that cracks and fatigue of the cover portion 134 can be prevented.

[0059] FIG. 7(b) is a perspective view when the plate-shaped spring protection portion 135D is replaced with a spring protection portion 135D2 made of an elastic body (such as rubber). The spring protection portion 135D2 is, for example, a rectangular parallelepiped and is fixed to the first flat portion 134B01 or the like with an adhesive. Note that the spring protection portion 135D2 may extend in the X direction to below the component mounting portion 134B06 on the back surface.

[0060] <Appliance body> FIG. 9 shows a perspective view of the lighting fixture 100 in a state where the light source unit 130 and the appliance body 110 are separated. The appliance body 110 includes a housing 111, a spring receiver 117 and a terminal block 118 disposed on the bottom surface portion 114 of the housing 111.

[0061] As shown in FIG. 3 which is a cross-sectional view, the housing 111 includes a long bottom surface portion 114 and two long side surface portions 115 extending in the Z direction from the long side of the bottom surface portion 114. Thereby, an accommodation recess 112 is formed which opens in the X direction and can accommodate the back surface components of the light source unit. F direction, and two long side surface portions 115 extending in the Z F direction from the long side of the bottom surface portion 114, and an accommodation recess 112 that opens in the X

[0062] The bottom surface portion 114 is provided with a lamp cord insertion hole 120A for passing wires such as a lamp cord 198 that is exposed from the ceiling 190 and supplies power to the lighting fixture 100. Further, the bottom surface portion 114 is provided with two fixture mounting holes 120B near both ends in the longitudinal direction for passing a suspension bolt 196 that is exposed from the ceiling 190 or a screw for attaching the fixture body to a reinforcing portion of the ceiling 190. When fixing with a suspension bolt, referring to FIG. 9, after the suspension 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 on the suspension bolts 196, whereby the fixture body 110 is fixed to the ceiling 190.

[0063] <Spring receiver> FIG. 10 shows a perspective view of a spring receiver, which is a fixture body side connecting component for connecting with a connecting spring portion 135 that is a light source unit side connecting component and integrating 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 spring receiver main portion 117B protruding in the Z F direction from the bottom surface portion. The spring receiver main portion 117B has a hook portion 117D and a spring insertion hole 117C. The hook portion 117D has a wide and flat hook shape, and in the light source unit locking state described later, the frame portion 135Ab (see FIG. 6) of the connecting spring 135A is hooked. The spring insertion hole 117C is a substantially rectangular hole, and in the light source unit installation state described later, the frame portion 135Ab of the connecting spring 135A is inserted therethrough. Note that the spring receiver 117 is usually formed by punching and bending a metal plate.

[0064] <Terminal block and lamp cord insertion hole> The terminal block 118 provided on the bottom surface portion 114 has a function of connecting the lamp cord 198 that has entered the fixture body through the lamp cord insertion hole 120A and connecting the fixture body side AC cable 119 that is connected to the power supply unit 136.

[0065] <Mounting hole> On the bottom surface portion 114 of the appliance body 110, there are provided appliance mounting holes 120B for mounting the appliance body 110 to the ceiling 190 by passing suspension bolts 196 therethrough and tightening them with nuts 197. After the suspension bolts 196 are respectively passed through these appliance mounting holes 120B, the appliance body 110 is fixed to the ceiling 190 by tightening the nuts 197 on the suspension bolts 196.

[0066] <Assembly of the light source unit> (1) Mounting of the light source substrate 131 inside the support cover portion 134B The Y of the cover portion 134 F or Y B From the opening on the side, the long side of the light source substrate 131 and its vicinity are positioned within the region surrounded by the first flat portion 134B01, the internal protruding portion 134B02, and the substrate support portion 134B03 of the support cover portion 134B described in FIG. 3, and the light source substrate 131 is slid in the longitudinal direction of the support cover portion 134B.

[0067] (2) Mounting of the back components (connection spring portion 135, spring protection portion 135D, power supply portion 136) to the support cover portion 134B (screwing or riveting) Regarding the mounting of the back components, the connection spring portion 135 will be described as an example. To mount the connection spring portion 135 to the support cover portion 134B, the Y of the cover portion 134 F or Y B From the side, the plate portion 135Ba of the connection spring portion 135 described in FIG. 6 is slid so as to be positioned between the second flat portion 134B04 and the back component mounting portion 134B06 of the support cover portion 134B described in FIG. 7. Then, the hole portion 135Bc of the spring holding portion 135B of the connection spring portion 135 is aligned with the mounting hole 134B09 of the back component mounting portion 134B06, and the fastening member 135F is attached to the mounting hole 134B09 from the Z B side.

[0068] When the fastening member 135F is a rivet, there is no need to provide a thread in the mounting hole 134B09. Also, when the fastening member 135F is a screw, a nut may be placed under the plate portion 135Ba and the screw and the nut may be tightened.

[0069] Compared with screwing, riveting has the advantage of simplifying the work, but on the other hand, there is a disadvantage that the back parts cannot be removed because the rivets are deformed. Therefore, it is desirable to decide which fastening means to adopt in consideration of the necessity of removing the back parts for repair etc. Note that other fastening means such as using an adhesive or a belt for fastening may be used.

[0070] (3) Connection of the LED drive cable 139 to the power supply unit 136 The LED drive cable 139 is connected to the end of the light source substrate 131. This is pulled out to the outside of the cover part 134 having a hollow structure through the notch N1 of the end cap, and connected to the power supply unit 136.

[0071] (4) Attachment of the end cap 140 to the cover part 134 Referring to FIG. 5, the end cap 140 is attached to the opening of the cover part 134 such that the frame part 142 of the end cap 140 enters the inside of the hollow cover part 134.

[0072] Here, in the support cover part 134B, a through hole is provided in a portion overlapping the through hole of the fixing part 143b. In this state, from the side of the fixing part 143b, a tapping screw is tightened through the through hole of the fixing part 143b and the through hole of the back part mounting part 134B06 to the through hole of the screw receiving part 143a. The tapping screw is threaded into the through hole of the screw receiving part 143a. Thereby, the back part mounting part 134B06 is sandwiched between the screw receiving part 143a and the fixing part 143b, and the end cap 140 and the cover part 134 are fixed.

[0073] <Installation of the appliance main body on the ceiling, attachment of the light source unit to the appliance main body> The lighting fixture 100 is installed on the ceiling by the following procedure. Note that it may be installed on a bar fitting such as a raceway instead of the ceiling.

[0074] (1) Referring to FIG. 9, pass two suspension bolts 196 extending from the ceiling side through the fixture mounting holes 120B of the fixture body 110, and tighten the nuts 197 to fix the fixture body 110 to the ceiling 190. 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 without using the suspension bolts.

[0075] (2) Pass the electric light wire 198 on the ceiling 190 side through the electric light wire insertion hole 120A and connect it to the terminal block 118.

[0076] (3) Hang the connecting springs 135A of the two connecting spring parts 135 on the light source unit 130 side on the hook parts 117D of the spring receivers 117 on the fixture body 110 side respectively. This state is referred to as the "light source unit locked state".

[0077] (4) In the locked state, connect the connector (not shown) of the fixture body side AC cable 119 extending from the terminal block 118 of the fixture body 110 and the connector (not shown) of the light source unit side AC cable 138 extending from the light source unit 130.

[0078] (5) Push up the light source unit 130 upward. Then, the connecting spring 135A enters the spring insertion hole 117C of the spring receiver 117. Due to the force of the spring, the light source unit 130 is pulled up, and the support cover part 134B of the light source unit 130 is pressed against and contacts the fixture body 110. This state is the lighting fixture 100 shown in FIG. 1, which is referred to as the "light source unit installed state".

[0079] <Modification example of the cover part> FIGS. 11(a), (b), and (c) are cross-sectional views of cover parts 234, 334, and 434 which are modification examples of the cover part 134. The positions of the mounting holes 234B09, 334B09, and 434B09, which correspond to the mounting holes 134B09 and are respectively provided in the back part component mounting parts 234B06, 334B06, and 434B06 corresponding to the back part component mounting part 134B06, are indicated by dashed-dotted lines.

[0080] The cover part 234 shown in Fig. 11(a) has a third flat part 234B07 corresponding to the third flat part 134B07 connected to the middle part of a spacer part 234B05 corresponding to the spacer part 134B05. Therefore, the distance between the light source and the cover part 234 is slightly wider than that in the case of the cover part 134. The back part component mounting part 234B06 extends inward from the tip of the spacer part 234B05.

[0081] The cover part 334 shown in Fig. 11(b) has a third flat part 334B07 corresponding to the third flat part 134B07 connected to the lower end of a spacer part 334B05 corresponding to the spacer part 134B05. Therefore, the distance between the light source and the cover part 3 34 is even wider than that in the case of the cover part 134. The back part component mounting part 334B06 extends inward from the tip of the spacer part 234B05.

[0082] The cover part shown in Fig. 11(c) 4 34 has a third flat part 434B07 corresponding to the third flat part 134B07 connected to a second flat part 434B04 corresponding to the second flat part 134B04, and a back part component mounting part 434B06 extends upward in the drawing from the connection part. The attachment of the back part component to such a vertically extending back part component mounting part will be described in detail in Embodiment 3.

[0083] <Embodiment 2> <Overview> The lighting fixture 500 according to the present embodiment has a narrower width in the X direction than the lighting fixture 100 and has a fixture shape in which designability is considered. The lighting fixture 500 is configured by attaching a light source unit 530 to a fixture main body 510.

[0084] <Light Source Unit> The light source unit 530 is shown in side views from the X F direction in Fig. 12(a) and the Z BAs shown in FIG. 12(b) which is a top view from a certain direction, it includes a cover portion 534, a power supply portion 536, and a connecting spring portion 535. Along with 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.

[0085] <Cover portion> FIG. 13 shows a cross-sectional view showing only the main part of the lighting fixture 500 at the A-A line in the vicinity of the power supply portion 536 shown in FIG. 12(b).

[0086] The cover portion 534 is a hollow member composed 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 appropriately disperses a light diffusing material. The support cover portion is white so as to have almost no translucency, but may be colored in 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 material of the cover portion 534 is resin, and polycarbonate or acrylic is preferably used.

[0087] Since the cover portion 534 has a hollow structure in which the light-emitting cover portion 534A and the support cover portion 534B are integrated, it is lightweight while suppressing the deflection in the longitudinal direction of the cover portion 534.

[0088] <Light-emitting cover portion> The light-emitting cover portion 534A has side surfaces and a front surface formed by planes, and has a function of transmitting and appropriately diffusing the light emitted by the light source 533. Note that it may be made transparent by suppressing the diffusibility.

[0089] <Support cover portion> As shown in FIG. 13, the support cover portion 534B includes a first flat portion 534B01, an internal protruding portion 534B02, a substrate support portion 534B03, a second flat portion 534B04, a spacer portion 534B05, a back component mounting portion 534B06, a third flat portion 534B07, and a contact portion 534B10.

[0090] The back component mounting part 534B06 protrudes from the spacer part 534B05 that forms the outer periphery of the cover part 534 with a hollow structure and the third flat part 534B07, and is not a part that forms a hollow structure.

[0091] One side of the first flat part 534B01 and the second flat part 534B04 is inside the hollow structure, and the other side is exposed outside the hollow structure. Therefore, the heat generated by the light source substrate 531 is easily discharged to the outside through the first flat part 534B01. Therefore, at least the first flat part 534B01 is preferably made of a resin having a higher thermal conductivity than 534A or the like. Considering manufacturing by two-color molding, it is preferable that the entire support cover part 534B is made of a resin having a higher thermal conductivity than the light-emitting cover part 534A.

[0092] The back component mounting part 534B06 is provided at a distance from the second flat part 534B04 by the spacer part 534B05, and is configured to receive a mounting plate 536G provided with a tapped hole.

[0093] <Light source substrate> The light source substrate 531 is formed by arranging a plurality of light sources 533 each composed of a surface-mount type LED in a row at intervals 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 row as shown in FIG. 13.

[0094] <Appliance body> The appliance body 510 includes a housing 511, a spring receiver 117 and a terminal block 118 arranged on the bottom surface part 514 of the housing 511.

[0095] As shown in FIG. 13 which is a cross-sectional view, the housing 511 includes a long bottom surface part 514 and two long side surface parts 515 extending in the Z F direction from the long sides of the bottom surface part 514, and by these, in the X FThere is a housing recess 512 that opens in a certain direction and can accommodate the back components of the light source unit. Also, a protrusion 521 is provided near the opening of the long side surface portion 515. The contact portion 534B10 of the light source unit pulled up in the Z B direction contacts the protrusion 521, thereby fixing the light source unit.

[0096] <Attachment of the power supply unit to its support cover part> Referring to FIG. 13, a power supply unit 536, which is one of the back components, has a 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.

[0097] The power supply unit 536 includes a power supply main unit 536A and a power supply attachment unit 536B. The power supply attachment unit 536B is attached to an attachment plate 536G provided with a threaded attachment hole 536GH through an attachment hole 536BH provided in the power supply attachment unit 536B and an attachment hole 534B06H provided in the back component attachment unit 534B06 using a fastening material 536F such as a screw. Thus, the power supply attachment unit 536B is attached to the support cover unit 534B. Note that it may be attached with a rivet instead of a screw, in which case the attachment plate 536G is not necessary.

[0098] <Attachment of the connecting spring part to its support cover part> The spring holding part 535B of the connecting spring part 535 is also attached to the support cover part 534B in the same manner as the power supply attachment unit 536B is attached to the support cover part 534B.

[0099] <Embodiment 3> <Overview> The light source unit 550 according to this embodiment has a different attachment structure for the back components compared to the light source unit 530.

[0100] <Cover part> FIG. 14 shows a cross-sectional view showing only the main part near the power supply unit 536 of the light source unit 550.

[0101] The cover part 534 has a hollow structure in which the light-emitting cover part 534A and the support cover part 534B are integrated.

[0102] <Fastening of the power supply part to the support cover part> As shown in FIG. 13, the support cover part 534B includes a back part component mounting part 534B11 that extends in the vertical direction (Z B direction) from the third flat part 534B07, and a mounting hole 534B11H is provided in the back part component mounting part 534B11.

[0103] <Mounting of the power supply part to its support cover part> Referring to FIG. 14, the power supply mounting part 536T attachment hole 536TH provided therein is attached to the nut 536N through the mounting hole 534B11H provided in the back part component mounting part 534B11 of the support cover part 534B using a fastening material 536F such as a screw. In addition to screws, it may also be attached with rivets, in which case the nut 536N is not required. Since the power supply mounting part 536T is provided at two locations on the Y F side and Y B side of the power supply main part 536A, a sufficiently stable attachment is possible, but attachment may also be performed at other parts.

[0104] In addition, for other back part components such as a connecting spring, a portion corresponding to the vertically extending power supply mounting part 536T is provided, and attachment using the back part component mounting part 534B11 of the light source unit is possible.

[0105] <Modification examples and others> As described above, the embodiments of the lighting fixture according to the present invention have been described. However, it is also possible to modify the illustrated lighting fixture as follows, for example, and it goes without saying that the present invention is not limited to the lighting fixture as shown in the above-described embodiments.

[0106] The light source unit of the embodiment is designed to be used in combination with the fixture body. However, it may be attached to a lighting rail (lighting duct) that functions as the fixture body or to a raceway, or it may be directly attached to an attachment target such as a ceiling without using the fixture body.

[0107] The hollow cover part is not limited to a closed hollow shape in cross-section, and holes may be provided. Also, in the cross-sectional shape, a notch in the X direction shorter than the width in the X direction, or Z a notch shorter than the height in the Z direction may be present.

[0108] In the example of Embodiment 1, the structure is such that the wireless module 137 is inserted into the slot provided in the power supply unit 136. However, an independent communication unit (having the same function as the wireless module) as a back part component may be attached to the cover part. In that case, the attachment part of the communication unit (the part corresponding to the power supply attachment part 136B) can be attached to the "back part component attachment part 134B06" of the cover part.

[0109] The fixture body was described using the example of an inverted Fuji shape in Embodiment 1 and a trough shape in Embodiments 2 and 3. However, for any embodiment, the fixture body may be of an inverted Fuji shape, trough shape, bottom surface open shape, or other shape.

[0110] In addition to mounting on the surface of the light source substrate, the light source may be directly mounted on the support cover part 134B without using the light source substrate 131, for example.

[0111] The substrate is not limited to a printed circuit board. A metal core substrate (a substrate having an insulating film provided on the surface of a metal plate and a wiring pattern provided thereon) may be used, or a ceramic substrate having a wiring pattern formed on its surface may be used. Thus, the material of the substrate is not particularly limited. Also, the board part of a COB type LED or the package part of a surface mount type LED may be made to serve as the substrate, and a printed circuit board or the like may not be used.

[0112] The boundary A / B of the two-color molding of the cover part is the Z of the light source BThe light exit 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.

[0113] The cover part may be molded in multiple colors such as three colors instead of two colors. For example, the reflecting part 134B08 may be white, and the first flat part 134B01 to which the light source board is attached may be made of a colored resin with high thermal conductivity. In that case, the color of the support cover part is not particularly limited.

[0114] 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 back part.

[0115] Although the connecting spring is a linear double torsion spring, the spring may be of any shape, such as a curved plate spring. As long as the spring is a member for connecting, it does not have to be elastic.

[0116] The configuration of each part of the present invention is not limited to the above-mentioned embodiment and modified example, and various modifications are possible within the technical scope of the claims. For example, the configuration of each part of the above-mentioned lighting fixture can be applied to various lighting fixtures that are not limited to LED lighting fixtures.

[0117] The above-described embodiments and modifications may be partially combined. [Explanation of symbols]

[0118] 100, 500 Lighting fixtures 110, 510 Equipment body 111, 511 case 112, 512 storage recess portion 1 14, 514 Bottom part 115, 515 Long side portion 1 17 Spring holder (connecting part on the device body) 117A Spring Receiver Fixing Part 117B Main Spring Receiver Part 117C Spring Insertion Hole 117D Hook Part 118 Terminal Block 119 Appliance Body Side AC Cable 120A Electric Lamp Wire Insertion Hole 120B Appliance Mounting Hole 521 Protrusion 130, 530, 550 Light Source Unit 131, 531 Light Source Substrate 132, 532 Printed Circuit Board 133, 533 Light Source 134, 234, 334, 434, 534 Cover Part 134A, 534A Light Emission Cover Part 134B, 534B Support Cover Part 134B01 、534B01 First Flat Part 134B02, 534B02 Internal Protrusion 134B03, 534B03 Substrate Support Part 134B04 , 434B04, 534B04 Second Flat Part 134B05, 234B05, 334B05, 534B05 Spacer Part 134B06, 234B06, 334B06, 434B06, 534B06, 534B11 Rear Part Mounting Part 134B07 , 234B07, 334B07, 434B07, 534B07 Third Flat Part 134B08 Reflective Part 134B09, 234B09, 334B09, 434B09, 534B06H, 534B11H, 536BH, 536GH , 536TH Mounting Hole 534B10 Contact Part 135, 535 Connecting Spring Part 135A Connecting Spring (Rear Part, Light Source Unit Side Connecting Part) 135Aa Spring Tip 135Ab Frame Part 135Ac Coil Spring Part 135Ad Hooking Part 135B and 535B Spring Retaining Parts 135Ba Plate Part 135Bb Spring Fixing Part 135Bc Hole Part 135Bd Arch Part 135Be Protruding Part 135D and 135D2 Spring Protection Parts 135F, 136F, and 536F Fasteners 136 and 536 Power Supply Parts (Rear Parts) 136A and 536A Main Power Supply Parts 136B, 536B, and 536T Power Supply Mounting Parts 136Bc Hole Part 536G Mounting Plate 536N Nut 137 Wireless Module 138 Light Source Unit Side AC Cable 139 LED Drive Cable 140 、540 End Cap 141 Cover Part 142 Frame Part 143a Screw Receiving Part 143b Fixing Part 143c Through Hole 170 Lighting Control Device 171 Lighting Control Program 178 Wireless 190 Ceiling 196 Hanging Bolt 197 Nut 198 Electric Lamp Wire

Claims

1. A light source unit including a resin cover portion, a light source substrate, and a back component, wherein the light source substrate includes a substrate and a light source; the cover portion has a hollow structure in which a resin light-emitting cover portion that emits light emitted from the light source and a resin support cover portion that supports the substrate are integrated; the light source substrate is attached in close contact with or in proximity to a flat portion provided inside the support cover portion, and the outside of the flat portion is exposed to the outside; the support cover portion includes a resin back-component attachment portion that protrudes outside the hollow structure, and the back component can be attached to the back-component attachment portion; the back-component attachment portion is formed with a through attachment hole; a light source unit.

2. The light source unit according to claim 1, wherein the back-component attachment portion protrudes in a direction parallel to the flat portion.

3. The light source unit according to claim 1, wherein the back component is at least one component selected from a power source, a light-source-unit side connection component, a communication unit, and a spring protection portion.

4. the light-emitting cover portion has translucency; the support cover portion has lower translucency than the light-emitting cover portion; the light source unit according to claim 1.

5. A lighting fixture including a fixture body having a fixture-body side connection component and a light source unit, wherein the light source unit includes a resin cover portion, a light source substrate, and a back component; the light source substrate includes a substrate and a light source; the cover portion has a hollow structure in which a resin light-emitting cover portion that emits light emitted from the light source and a resin support cover portion that supports the substrate are integrated; the light source substrate is attached in close contact with or in proximity to a flat portion provided inside the support cover portion, and the outside of the flat portion is exposed to the outside; the support cover portion includes a resin back-component attachment portion that protrudes outside the hollow structure, and the back component can be attached to the back-component attachment portion; the back component includes a light-source-unit side connection component; the back-component attachment portion is formed with a through attachment hole; the fixture body and the light source unit are integrated by connecting the fixture-body side connection component and the light-source-unit side connection component; a lighting fixture.

6. When the connecting component on the appliance body side and the connecting component on the light source unit side are connected, the cover portion comes into contact with the tip of the long-side surface portion of the appliance body or a protruding portion provided on the long-side surface portion, and the light source unit is fixed to the appliance body. The lighting fixture according to claim 5.

7. The back component includes at least one component selected from a power source, a communication unit, and a spring protection portion. The lighting fixture according to claim 5.

8. The light-emitting cover portion has translucency. The support cover portion has lower translucency than the light-emitting cover portion. The lighting fixture according to claim 5.

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