JP7713488B2 - Light source unit and lighting fixture - Google Patents

Description

The present invention relates to a light source unit and a lighting fixture equipped with a light source unit, and in particular to a lighting fixture in which the fixture body and the light source unit are separate.

One type of lighting fixture that is placed on a ceiling includes a light source unit and a fixture body that has a recess for accommodating 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 accommodated in the fixture body.

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 board) is disposed inside an enclosure made of a translucent resin.

JP 2019-207784 A JP 2012-084367 A

The lighting fixture in Patent Document 1 has the problem that the light source unit is heavy, and the reason for this is that the support on which the board on which the LEDs are mounted is made of metal.

On the other hand, the lighting fixture in Patent Document 2 uses an enclosure made of translucent resin, and therefore has no component equivalent to a metal support. 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.

The metal support not only supports the LED mounting board on the front, but also has rear components attached to the rear, such as the power supply and the connecting components to the main body of the fixture. In this case, tapped holes are made in the metal support and screws are inserted into the holes and tightened to secure the rear components. One problem with using a plastic support is that it is not possible to make tapped holes in the resin for fastening due to the strength of the resin. Another problem with using a plastic support with a hollow structure that is 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.

The present invention was made in consideration of these problems, and aims to provide a lightweight lighting fixture that solves the problems of heat dissipation from the light source unit and the problems of mounting rear components.

In order to solve the above problems, the present invention provides a light source unit including a resin cover, a light source board, and a rear part,
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 together,
The light source board is attached in close contact with or adjacent to a flat portion provided on the inner side of the support cover portion, and an outer side of the flat portion is exposed to the outside,
the support cover portion includes a rear component mounting portion made of resin and protruding outward from the hollow structure, and the rear component is mountable to the rear component mounting portion;
The rear component mounting portion has a mounting hole formed therethrough.

In the present invention, the rear component attachment portion may protrude in a direction parallel to the flat portion.

In the present invention, the rear component mounting portion may be formed with a hole for mounting the rear component.

In the present invention, the rear part may be at least one part selected from a power source, a light source unit side connecting part, a communication unit, and a spring protection part.

The present invention provides a lighting fixture having a fixture body with a fixture body side connecting part and a light source unit,
The light source unit includes a resin cover, a light source substrate, and a rear part.
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 together,
The light source board is attached in close contact with or adjacent to a flat portion provided on the inner side of the support cover portion, and an outer side of the flat portion is exposed to the outside,
The support cover portion includes a rear component mounting portion made of resin that protrudes to the outside of the hollow structure, and the rear component can be mounted to the rear component mounting portion.
The rear part includes a light source unit side connecting part,
The rear component mounting portion has a through hole formed therein,
The fixture body side connecting part and the light source unit side connecting part are connected to each other, so that the fixture body and the light source unit are integrated.
It is a lighting fixture.

The present invention provides a lighting fixture having a fixture body with a fixture body side connecting part and a light source unit,
The light source unit includes a cover portion, a light source substrate, and a rear component,
The light source substrate includes a substrate and a light source.
the cover portion has a hollow structure in which a light emission cover portion that emits light emitted from the light source and a support cover portion that supports the substrate are integrated,
The light source substrate is provided inside the support cover portion,
the rear part is attached to a rear part attachment portion of the support cover portion that protrudes outside the hollow structure,
The rear part includes a light source unit side connecting part.
It is a lighting fixture.

The present invention provides a lighting fixture having a fixture body with a fixture body side connecting part and a light source unit,
The light source unit includes a cover portion, a light source substrate, and a rear component,
The light source substrate includes a substrate and a light source.
the cover portion has a hollow structure in which a light emission cover portion that emits light emitted from the light source and a support cover portion that supports the substrate are integrated,
The light source substrate is provided inside the support cover portion,
The rear part includes a light source unit side connecting part,
The support cover portion has a lower light transmittance than the light emission cover portion,
The support cover part is attached in contact with the instrument body.
It is a lighting fixture.

The light source unit according to the present invention has a light source substrate attached to the inside of the support cover of a hollow cover section in which the light-emitting cover section and the support cover section are integrated, and the outside of the support cover section is exposed, so it is lightweight without using metal and can ensure heat dissipation.

The light source unit according to the present invention also includes a hollow cover section in which the light-emitting cover section and the support cover section are integrated, and a rear component attachment section protruding from the support cover section is provided, allowing rear components such as a light source unit connecting component to be attached.

Perspective view of a lighting fixture A side view of the light source unit as viewed from the _XF direction and a top view as viewed from the _ZB direction A cut end view of the lighting fixture seen from the _YF direction. Light source board seen from _ZF direction A front view of the end cap seen from the _YF direction and a top view seen from the _ZB direction A cut end view including the power supply unit of the light source unit. Perspective view of the connecting spring part A cut end view including a connecting spring part of a light source unit FIG. 1 is a perspective view of a lighting fixture in a state where a light source unit and a fixture body are separated from each other; Perspective view of the spring support 11 is a cross-sectional view of a modified example of the cover portion; FIG. 11 is a side view and a plan view of a light source unit according to a second embodiment. 1 is a cross-sectional view of a lighting fixture according to a second embodiment. 11 is a cross-sectional view of a light source unit according to a third embodiment.

<Embodiment 1>
＜Overview＞
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.

Although the lighting fixture 100 can be installed on a wall or floor, no matter what direction it is installed in, the direction is indicated as _ZF - _ZB with respect to the lighting fixture 100, and the _ZB direction is sometimes indicated as "down" for ease of understanding. In other words, the notation "down" is a term to describe the direction of the lighting fixture and has nothing to do with "down" in the direction of gravity .

The figures referred to in this specification are schematic, with some of the configuration omitted or exaggerated, in order to facilitate understanding of the present invention. In addition, when explaining the configuration of a part that has a symmetrical shape, if it would clearly be repetitive to repeat the same explanation, only one side of the description may be explained to avoid repetition.

<Lighting control device>
1 is composed of a tablet, a smartphone, a PC, etc., and has a lighting control program 171 (not shown) installed. A user can operate the lighting control program 171 to communicate with the lighting fixtures 100 via wireless 178 and change the lighting conditions. The lighting conditions include color tone (adjusting the color), brightness (dimming), and on/off. In addition to manual control, scheduled operation can be performed to automatically change the lighting conditions at set times according to a pre-registered schedule.

The lighting control device 170 is not essential, and even if the lighting control device 170 is not provided, the lighting fixture 100 can be turned on/off by turning the electric light line on/off. The lighting control device may be a wired control system.

<Light source unit>
As shown in FIG. 2A which is a side view from the right side and FIG. 2B 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.

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

The cover portion 134 is a hollow structure member consisting of a light-emitting cover portion 134A provided on the front side of the light source 133 and a support cover portion 134B provided on the rear side of the light source substrate 131. The light-emitting cover portion 134A is translucent, and a light diffusing material is appropriately dispersed in it. The support cover portion is white so that it has almost no translucency, but it 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 extrusion-molded as a single unit using a two-color molding method. The material of the cover portion 134 is resin, and polycarbonate or acrylic is preferably used.

The cover section 134 has a hollow structure in which the light-emitting cover section 134A and the support cover section 134B are integrated, so it is lightweight yet has sufficient strength, which prevents the cover section 134 from bending in the longitudinal direction. Conventional supports are made of long, flat plates, which make them prone to bending (warping) in the longitudinal direction, but even if the support cover section 134B of the cover section 134 tries to bend, the light-emitting cover section 134A, which has sides, does not bend, so there is an advantage that the cover section 134 as a whole does not bend.

<Light exit cover part>
The light exit cover portion 134A is formed with a curved surface and has a function of transmitting and appropriately diffusing the light emitted by the light source 133. Note that the light exit cover portion 134A may be made transparent to suppress diffusion.

<Support cover part>
As shown in FIG. 3, the support cover portion 134B includes a first flat portion 134B01, an inner protrusion 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.

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, and is not a part that forms the outer periphery of the hollow structure.

The light source board 131, which will be described later, is attached in close contact with or close to the underside of the first flat portion 134B01 (the inside of the support cover portion 134B), and at that time, the board support portion 134B03, which protrudes inward from the lower end portion of the internal protrusion portion 134B02, which protrudes downward from the first flat portion 134B01, supports the light source board 131. Note that when the light source board 131 is bonded to the first flat portion 134B01, the internal protrusion portion 134B02 and the board support portion 134B03 may be omitted, but may be left in place to maintain support in the event that the adhesive strength decreases.

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 board 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 emission cover portion 134A.

Referring to FIG. 3, the light source unit 130 is pulled up toward the fixture body 110 by the connecting spring portion 135, so that the third flat portion 134B07 comes into contact with the tip of the long side surface portion 115 of the fixture body 110. The third flat portion 134B07 to the first flat portion 134B01 are opaque cover portions, so that light loss from the light source 133 toward the storage 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 if it is less translucent than the light emission cover portion 134A, which has translucency.

The rear component mounting portion 134B06 is spaced apart from the second flat portion 134B04 by the spacer portion 134B05, allowing the support portion of the rear component (such as the spring holding portion 135B) to fit in.

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 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.

<Light source board/light source>
As shown in Fig. 4, the light source board 131 has a plurality of light sources 133 made of surface-mounted LEDs arranged in rows 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 as shown in Fig. 1, but it may be one row or three or more rows. In addition to the surface-mounted LEDs, it may be possible to use COB (Chip On Board) type LEDs with a blue LED chip mounted on a board as described below, or CSP (Chip Scale Package) type LEDs.

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

The light source 133 may be, for example, an LED of one light color, or may be an alternating arrangement of LEDs of two light 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 follow the black body radiation.

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

Another example of a light source with three emission colors may be a combination of the following red LED, yellow-white LED, and blue-white LED.

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).

A yellow-white LED (Yw) emits light with a chromaticity in the range surrounded by the CIE 1931 chromaticity coordinates of (0.5, 0.5), (0.423, 0.355), (0.342, 0.312), (0.352, 0.44), (0.37, 0.63) and the chromaticity boundary lines, an example of which is (0.44, 0.47).

A blue-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 being (0.23, 0.26).

Because Bw (bluish-white) light, which is a mixture of light from other spectra with high relative luminosity, has a higher luminosity than B (blue) light, which has a spectrum close to monochromatic, the use of light-emitting elements with three colors, R, Yw, and Bw, has the advantage of being able to achieve a relatively good power-luminous flux conversion efficiency (lm/W) compared to the use of light-emitting elements with the three primary colors, R, G, and B.

<End cap>
As shown in FIG. 2 , the end cap 140 is a member that is attached to the short side end of the cover portion 134 .

The end cap 140 attached to the _YB side end of _FIG . 2(a) includes a cover portion 141, a frame portion 142, a screw receiving portion 143a, and a fixing portion 143b, as shown in FIG. 5(a) which is a front view seen from the YF direction and FIG. 5(b) which is a top view seen from the _ZB direction. The frame portion 142 is inserted into the inside of the area surrounded by the light emission 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 inserted into 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 to fix the end cap 140 to the support cover portion 134B. The fixing of the end cap 140 and the support cover portion 134B will be described later.

The end cap 140 also has a notch N1. The notch N1 is used to insert the LED drive cable 139 required for connecting the light source to the power supply unit 136 (see FIG. 2(b)).

The material of the end cap 140 is preferably the same resin as that of the light-emitting cover portion 134A, or a resin with similar translucency.

<Power supply section>
6 and 9, which are end views of the CC' cutaway 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 rear components, has a 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, but may also be controlled externally. In this case, a control signal from the outside may be received by a wireless module 137.

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

The power supply mounting part 136B is a member for holding the main power supply part 136A and for mounting it to the cover part 134 of the light source unit. To mount the power supply mounting part 136B to the rear part mounting part 134B06, as shown in FIG. 6, fastening material 136F such as a screw or rivet is passed through mounting hole 134B09 of the rear part mounting part 134B06 and hole 136Bc of the power supply mounting part 136B, and the power supply mounting part 136B is attached by the fastening material 136F. Note that while FIG. 6 shows the fastening material 136F as a screw, it may also be a rivet.

<Connecting spring part>
Fig. 7(a) is a perspective view of the connecting spring part 135, which is a connecting part on the light source unit side, and Fig. 8 is a cross-sectional end view of the light source unit 130 taken along line B-B (connecting spring part) shown in Fig. 2(b). The connecting spring part 135, which is one of the rear parts, is a light source unit side connecting part that is attached to the upper surface of the support cover part 134B and engages with the spring receiver 117 of the fixture body 110 to connect the light source unit 130 to the fixture body 110.

As shown in FIG. 7(a), the connecting spring portion 135 includes a connecting spring 135A, a spring holding portion 135B, a spring protection portion 135D, and a fastening material 135F.

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

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. In order to attach the spring holding portion 135B to the rear part attachment portion 134B06, as shown in Figs. 7(a) and 8, the fastening material 135F such as a screw or a rivet is passed through the attachment hole 134B09 of the rear part attachment portion 134B06 and the hole portion 135Bc of the spring holding portion 135B, and the spring holding portion 135B is attached by the fastening material 135F. Note that Fig. 7(a) shows the fastening material 135F as a screw, and Fig. 8 shows the fastening material 135F as a rivet, but the pattern of the portion where the Phillips screw is inserted in Fig. 7(a) can be regarded as a rivet by considering it to be round, and the lower side of the fastening material 135F in Fig. 8 can be regarded as a rivet.

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 to which the light source board 131 is attached. The spring fixing portion 135Bb is a flat portion to which the coil spring portion 135Ac of the connecting spring 135A is hooked. The hole portion 135Bc is a hole provided in the plate portion 135Ba, and may be provided with a thread (tap) for fixing the plate portion 135Ba to the support cover portion 134B (thread is not required when fixing with a nut or rivet). The arch portion 135Bd is a portion that is machined into an arch shape, and the hook portion 135Ad of the connecting spring 135A is inserted into and hooked onto the arch. The protrusion portion 135Be is a portion that is bent and stands up at the end of the plate portion 135Ba.

The spring protection part 135D is a metal plate that prevents the spring tip 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 part attachment part 134B06 of the light source unit by fastening material 135F.

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

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

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

As shown in the cross-sectional view of FIG. 3, the housing 111 has an elongated bottom surface portion 114 and two long side surface portions 115 extending in the _ZF direction from the long sides of the bottom surface portion 114, and these form an accommodating recess 112 that opens in the _XF direction and can accommodate rear components of the light source unit.

The bottom surface portion 114 is provided with an electric light line insertion hole 120A for passing electric wires such as an electric light line 198 exposed from the ceiling 190 for supplying power to the lighting fixture 100. The bottom surface portion 114 also has two fixture mounting holes 120B at positions near both ends in the longitudinal direction for passing hanging bolts 196 exposed from the ceiling 190 or screws for attaching the fixture body to the reinforcement part of the ceiling 190. When fixing with hanging bolts, as shown in FIG. 9, the hanging bolts 196 are passed through the fixture mounting holes 120B, and then nuts 197 (which may be used in conjunction with washers or spring washers) are tightened on the hanging bolts 196 to fix the fixture body 110 to the ceiling 190.

<Spring support>
Fig. 10 shows a perspective view of the spring receiver, which is a connecting part on the side of the fixture body, 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 side of the light source unit. As shown in Fig. 10, the spring receiver 117 includes a spring receiver fixing part 117A attached to the bottom part 114 of the fixture body and a spring receiver main part 117B protruding from the bottom part in the _ZF direction, and the spring receiver main part 117B has a hook part 117D and a spring insertion hole 117C. The hook part 117D has a wide and flat hook shape, and in the light source unit locking state described later, the frame part 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 part 135Ab of the connecting spring 135A is inserted through the spring insertion hole 117C. The spring receiver 117 is usually formed by subjecting a metal plate to processes such as punching and bending.

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

<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 hanging bolts 196 through the fixture mounting holes 120B and tightening the nuts 197. After the hanging 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 on the hanging bolts 196.

<Assembly of the light source unit>
(1) Mounting of the light source board 131 inside the support cover part 134B From the opening on the _YF or _YB side of the cover part 134, the long side of the light source board 131 and its vicinity are positioned within the area surrounded by the first flat part 134B01, the internal protrusion 134B02, and the board support part 134B03 of the support cover part 134B shown in FIG. 3, and the light source board 131 is slid in the longitudinal direction of the support cover part 134B.

(2) Attaching the rear components (the connecting spring portion 135, the spring protection portion 135D, and the power supply portion 136) to the support cover portion 134B (with screws or rivets)
The attachment of the rear components will be described using the connecting spring portion 135 as an example.
To attach the connecting spring part 135 to the support cover part 134B, the plate part 135Ba of the connecting spring part 135 shown in Fig. 6 is slid from the _YF or _YB side of the cover part 134 so as to be positioned between the second flat part 134B04 and the rear component attachment part 134B06 of the support cover part 134B shown in Fig. 7. Then, the hole part 135Bc of the spring holding part 135B of the connecting spring part 135 is aligned with the attachment hole 134B09 of the rear component attachment part 134B06, and the fastening material 135F is attached to the attachment hole 134B09 from the _ZB side.

If the fastening member 135F is a rivet, there is no need to provide a thread in the mounting hole 134B09. Also, if the fastening member 135F is a screw, a nut may be placed on the underside of the plate portion 135Ba and the screw and nut may be tightened.

Compared to screw fastening, 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. For this reason, it is advisable to decide which fastening method to use, taking into consideration the need to remove the rear part for repairs, etc. Other fastening methods, such as adhesives or belt fastening, may also be used.

(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 board 131. This is pulled out to the outside of the hollow cover unit 134 through the notch N1 of the end cap, and is connected to the power supply unit 136.

(4) Attaching End Cap 140 to Cover Section 134 Referring to FIG. 5, end cap 140 is attached to the opening of cover section 134 such that frame section 142 of end cap 140 is inserted inside hollow cover section 134.

Here, a through hole is provided in the support cover part 134B in a portion that overlaps with the through hole of the fixing part 143b. In this state, a tapping screw is fastened from the fixing part 143b side through the through hole of the fixing part 143b and the through hole of the rear component mounting part 134B06, into the through hole of the screw receiving part 143a. The tapping screw is threaded into the through hole of the screw receiving part 143a. As a result, the rear component 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.

<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 be installed on a bar fitting such as a raceway instead of the ceiling.

(1) Referring to FIG. 9, the two hanging bolts 196 extending from the ceiling side are passed through the fixture mounting holes 120B of the fixture body 110, and the 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 to the reinforcing part of the ceiling 190 with screws from below the fixture mounting holes 120B without using hanging bolts.

(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.

(3) The connecting springs 135A of the two connecting spring parts 135 on the light source unit 130 side are hooked onto the hook parts 117D of the spring receivers 117 on the fixture body 110 side. This state is called the "light source unit locked state."

(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 to the connector (not shown) of the light source unit side AC cable 138 extending from the light source unit 130.

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

<Modifications of Cover>
11A, 11B, and 11C are cross-sectional views of cover parts 234, 334, and 434 which are modified examples of cover part 134. The positions of mounting holes 234B09, 334B09, and 434B09 which are portions equivalent to mounting hole 134B09 provided in rear component mounting part 234B06, rear component mounting part 334B06, and rear component mounting part 434B06, respectively, which are portions equivalent to rear component mounting part 134B06, are indicated by dashed dotted lines.

In the cover part 234 shown in FIG. 11(a), the third flat part 234B07 corresponding to the third flat part 134B07 is connected to the middle part of the 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 in the case of the cover part 134. The rear part attachment part 234B06 extends inward from the tip of the spacer part 234B05.

11B, 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 334 is wider than in the case of the cover portion 134. A rear component attachment portion 334B06 extends inward from the tip of the spacer portion 234B05.

11(c), the cover part 434 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 rear component attachment part 434B06 extending upward from the connection part in the figure. The attachment of a rear component to such a vertically extending rear component attachment part will be described in detail in the third embodiment.

<Embodiment 2>
＜Overview＞
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 fixture body 510.

<Light source unit>
12(a) which is a side view from the _XF direction and FIG. 12(b) which is a top view from the _ZB 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 narrowed, a power supply attachment part 536B is provided in the Y direction instead of the X direction of the main power supply part 536A.

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

The cover section 534 is a hollow member consisting of a light-emitting cover section 534A provided on the front side of the light source 533 and a support cover section 534B provided on the rear side of the light source board 531 (printed board 532). The light-emitting cover section 534A is translucent, and light diffusing material is appropriately dispersed in it. The support cover section is white so that it has almost no translucency, but it may be colored other colors such as gray or black by using a resin with high thermal conductivity. The light-emitting cover section 534A and the support cover section 534B are extrusion-molded as a single unit using a two-color molding method. The material of the cover section 534 is resin, and polycarbonate or acrylic is preferably used.

The cover part 534 has a hollow structure in which the light-emitting cover part 534A and the support cover part 534B are integrated, so that the cover part 534 is lightweight yet is prevented from bending in the longitudinal direction.

<Light exit cover part>
The light exit cover portion 534A has flat sides and a flat front, and has a function of transmitting and appropriately diffusing the light emitted by the light source 533. Note that the light exit cover portion 534A may be made transparent to suppress the diffusivity.

<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.

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 part of the hollow structure.

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 board 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 emission cover portion 534A.

The rear component mounting portion 534B06 is spaced apart from the second flat portion 534B04 by the spacer portion 534B05, allowing the mounting plate 536G, which has a threaded (tapped) hole, to be inserted therein.

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

<Main unit>
The device body 510 includes a housing 511 , and a spring receiver 117 and a terminal block 118 arranged on a bottom portion 514 of the housing 511 .

13, the housing 511 includes an elongated bottom surface portion 514 and two long side surface portions 515 extending in the _ZF direction from the long sides of the bottom surface portion 514, which form an accommodating recess 512 that opens in the _XF direction and can accommodate rear components of the light source unit. A protrusion 521 is provided near the opening of the long side surface portions 515. The light source unit is fixed by contacting the protrusions 521 with a contact portion 534B10 of the light source unit that is pulled up in the _ZB direction by the connecting spring portion 535.

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

The power supply unit 536 comprises a main power supply unit 536A and a power supply mounting unit 536B. The power supply mounting unit 536B is attached to a mounting plate 536G having a threaded mounting hole 536GH by using fastening materials 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 instead of screws, rivets may also be used for attachment, in which case the mounting plate 536G is not required.

<Connecting spring part and its attachment to the support cover part>
The spring retaining portion 535B of the connecting spring portion 535 is also attached to the support cover portion 534B in a similar manner to the way in which the power supply attachment portion 536B is attached to the support cover portion 534B.

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

<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.

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

<Fastening the power supply unit to the support cover>
As shown in FIG. 13, the support cover portion 534B includes a rear component attachment portion 534B11 extending vertically ( _ZB direction) from the third flat portion 534B07, and the rear component attachment portion 534B11 is provided with an attachment hole 534B11H.

<Power supply unit and its installation on the support cover>
14, the power supply attachment portion 536T is attached to the nut 536N by using a fastening material 536F such as a screw through an attachment hole 536TH provided in the power supply attachment portion 536T and an attachment hole 534B11H provided in the rear component attachment portion 534B11 of the support cover portion 534B. Note that attachment may be made with a rivet instead of a screw, in which case the nut 536N is not required. The power supply attachment portion 536T is provided in two places on _the YF side and _the YB side of the main power supply portion 536A, so that a sufficiently stable attachment is possible, but attachment may also be made at other portions.

In addition, for other rear components such as connecting springs, a portion equivalent to the vertically extending power supply mounting portion 536T can be provided, and mounting can be performed using the rear component mounting portion 534B11 of the light source unit.

<Modifications and other details>
The above describes an embodiment of the lighting fixture according to the present invention. However, the exemplified lighting fixture can 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.

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.

The cross-sectional shape of the hollow cover is not limited to a closed hollow shape, and may be provided with a hole, or may have a notch in the X direction shorter than the width in the X direction in the cross-sectional shape, or a notch in the Z direction shorter than the height in the Z direction.

In the example of the first embodiment, 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 as a rear part, and in this case, the attachment part of the communication unit (the part corresponding to the power supply attachment part 136B) can be attached to the "rear part attachment part 134B06" of the cover.

The fixture body has been described using an example of an inverted Fuji shape in the first embodiment and a trough shape in the second and third embodiments, but in any of the embodiments, the fixture body may be an inverted Fuji shape, a trough shape, an open-bottom shape, or another shape.

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.

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 on which a wiring pattern is formed on the surface. In this way, 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 serve as the substrate, eliminating the need for a printed circuit board.

The boundary A/B of the two-color molding of the cover portion may be provided anywhere along the line between the light-emitting cover portion (A) in the _ZB direction of the light source and the support cover portion (B) in the _ZF direction of the light source.

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, which is the part to which the light source board is attached, may be made of a colored resin with high thermal conductivity. In that case, there is no particular limit to the color of the support cover part.

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 connecting part on the light source unit side, is attached to the light source unit as a rear part.

The connecting spring shown here is a linear double torsion spring, but it can be of any shape, such as a curved plate spring. As long as it is a material for connecting, it does not have to be elastic.

The configuration of each part of the present invention is not limited to the above-mentioned embodiment and modified example, but various modifications are possible within the technical scope described in 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.

The above-described embodiments and variations may be partially combined.

100, 500 Lighting fixture 110, 510 Fixture body 111, 511 Housing 112, 512 Storage recess
1 14, 514 Bottom surface portion 115, 515 Long side surface portion
1 17 Spring holder (connecting part on the device body side)
117A Spring receiver fixing portion 117B Spring receiver main portion 117C Spring insertion hole 117D Hook portion 118 Terminal block 119 Fixture body side AC cable 120A Light line insertion hole 120B Fixture mounting hole 521 Protrusion portion 130, 530, 550 Light source unit 131, 531 Light source board 132, 532 Printed board 133, 533 Light source 134, 234, 334, 434, 534 Cover portion 134A, 534A Light emission cover portion 134B, 534B Support cover portion 134B01 , 534B01 First flat portion 134B02, 534B02 Internal protrusion portion 134B03, 534B03 Board support portion 134B04 , 434B04, 534B04 Second flat portion 134B05, 234B05, 334B05, 534B05 Spacer portion 134B06, 234B06, 334B06, 434B06, 534B06 , 534B11 Rear part mounting portion 134B07, 234B07 , 334B07, 434B07, 534B07 Third flat portion 134B08 Reflecting portion 134B09, 234B09, 334B09, 434B09, 534B06H, 534B11H, 536BH, 536GH, 536TH Mounting hole 534B10 Contact portion 135, 535 Connecting spring portion 135A Connecting spring (rear part, light source unit side connecting part)
135Aa Spring tip portion 135Ab Frame portion 135Ac Coil spring portion 135Ad Hanging portion 135B, 535B Spring holding portion 135Ba Plate portion 135Bb Spring fixing portion 135Bc Hole portion 135Bd Arch portion 135Be Protrusion portion 135D 135D2 Spring protection portion 135F, 136F, 536F Fastening material 136, 536 Power supply portion (rear part)
136A, 536A Main power supply 136B, 536B, 536T Power supply attachment portion 136Bc Hole portion 536G Attachment plate 536N Nut 137 Wireless module 138 Light source unit side AC cable 139 LED drive cable 140 , 540 End cap 141 Lid portion 142 Frame portion 143a Screw receiving portion 143b Fixing portion 143c Through hole 170 Lighting control device 171 Lighting control program 178 Wireless 190 Ceiling 196 Hanging bolt 197 Nut 198 Light line

Claims (8)

A light source unit including a resin cover, a light source substrate, and a rear part,
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 together,
The light source board is attached in close contact with or adjacent to a flat portion provided on the inner side of the support cover portion, and an outer side of the flat portion is exposed to the outside,
the support cover portion includes a rear component mounting portion made of resin and protruding outward from the hollow structure , and the rear component is mountable to the rear component mounting portion;
The rear component mounting portion has a through -hole formed therein.
Light source unit. The light source unit according to claim 1 , wherein the rear component attachment portion protrudes in a direction parallel to the flat portion . The light source unit according to claim 1, wherein the rear part is at least one part selected from a power source, a light source unit side connecting part, a communication unit, and a spring protection part. The light exit cover portion is translucent,
The support cover portion has a lower light transmittance than the light exit cover portion.
The light source unit according to claim 1 . A lighting fixture having a fixture body with a fixture body side connecting part and a light source unit,
The light source unit includes a resin cover, a light source substrate, and a rear part.
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 together,
The light source board is attached in close contact with or adjacent to a flat portion provided on the inner side of the support cover portion, and an outer side of the flat portion is exposed to the outside,
The support cover portion includes a resin rear component mounting portion that protrudes outward from the hollow structure, and the rear component is mountable to the rear component mounting portion, and the rear component includes a light source unit side connecting component.
The rear component mounting portion has a through hole formed therein ,
The fixture body side connecting part and the light source unit side connecting part are connected to each other, so that the fixture body and the light source unit are integrated.
Lighting fixtures. When the fixture body side connecting part and the light source unit side connecting part are connected, the cover part comes into contact with the tip of the long side surface part of the fixture body or a protrusion provided on the long side surface part, and the light source unit is fixed to the fixture body.
6. A lighting device according to claim 5 . The rear part includes at least one part selected from a power supply, a communication unit, and a spring protector.
6. A lighting device according to claim 5 . The light exit cover portion is translucent,
The support cover portion has a lower light transmittance than the light exit cover portion.
6. A lighting device according to claim 5 .