JP2020119869A - Light source module, light source unit and lighting fixture - Google Patents

Abstract

To provide a light source module capable of reducing unevenness of brightness of the whole of a plurality of light source modules when the plurality of light source modules are arranged in a raw.SOLUTION: A light source module 22 includes a substrate 221, a plurality of first light sources 220, and a second light source 224. The plurality of first light sources 220 are provided on one main surface 221d of the substrate 221, and are arranged along a longitudinal direction H1 of the substrate 221. The second light source 224 is provided on an edge part 221f in a longitudinal direction H1 in the one main surface 221d. An optical axis A1 of the plurality of first light sources 220 faces outward on the one main surface 221d of both outsides in a thickness direction in the substrate 221. An optical axis A3 of the second light source 224 faces outward on a side of the edge part 221f of both outsides in a longitudinal direction H1 on the substrate 221.SELECTED DRAWING: Figure 3

Description

The present disclosure generally relates to a light source module, a light source unit, and a lighting fixture, and more specifically, includes a light source module including a plurality of light sources arranged in a line, a light source unit including a plurality of the light source modules, and the light source unit. Regarding lighting equipment.

The luminaire described in Patent Document 1 includes a plurality of modules (light source modules). Each module has a plurality of LEDs (light emitting diodes) and a substrate. On the mounting surface of the board, the plurality of LEDs are arranged at equal intervals along the longitudinal direction of the board. That is, the plurality of LEDs include an edge LED and an LED other than the edge LED. The plurality of modules are arranged in a line along the longitudinal direction of the substrate.

JP, 2013-229276, A

In the luminaire described in Patent Document 1, the interval between the adjacent LEDs at the end in the adjacent modules tends to be larger than the interval between the adjacent LEDs in each module. As a result, the luminous flux density in the portion between the adjacent modules becomes smaller than the luminous flux density in each module. As a result, the brightness of the lighting fixture becomes uneven.

An object of the present disclosure is to provide a light source module, a light source unit, and a lighting fixture that can reduce unevenness in brightness of the entire light source modules when the light source modules are arranged in a line.

A light source module according to one aspect of the present disclosure includes a substrate, a plurality of first light sources, and one or more second light sources. The plurality of first light sources are provided on one main surface of the substrate and are arranged along the longitudinal direction of the substrate. The second light source is provided at an edge portion of the one main surface in the longitudinal direction. The optical axes of the plurality of first light sources are directed to the outer side of the one main surface side of both outer sides of the substrate in the thickness direction. The optical axis of the second light source is directed to the outer side on the edge side of both outer sides of the substrate in the longitudinal direction.

A light source unit according to one aspect of the present disclosure includes a plurality of light source modules. At least one of the plurality of light source modules is the light source module of the above aspect. Each of the plurality of light source modules includes the substrate and at least the plurality of first light sources of the plurality of first light sources and the second light source. The substrate of each of the plurality of light source modules is arranged along the longitudinal direction of the substrate.

A lighting fixture according to an aspect of the present disclosure includes the light source unit of the above aspect, and a fixture main body that supports the light source unit.

According to the present disclosure, when a plurality of light source modules are arranged in a line, there is an advantage that it is possible to reduce unevenness in brightness of the plurality of light source modules as a whole.

FIG. 1 is a perspective view of a lighting fixture according to an embodiment. FIG. 2 is an exploded perspective view of the above lighting fixture. FIG. 3 is a plan view of the LED module according to the embodiment. FIG. 4 is a plan view of the LED module according to the first modification. FIG. 5 is a plan view of an LED module according to Modification 2. FIG. 6 is a plan view of an LED module according to Modification 3. FIG. 7 is a plan view of an LED module according to Modification 4. FIG. 8 is a plan view of an LED module according to a modification of Modification 4. FIG. 9 is a plan view of an LED module according to another modification of Modification 4.

Hereinafter, the lighting fixture according to the embodiment will be described in detail with reference to the drawings. However, each drawing described in the embodiment is a schematic drawing, and the ratio of the size and the thickness of each component does not necessarily reflect the actual dimensional ratio. The configurations described in the embodiments below are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as the effects of the present disclosure can be exhibited.

(Embodiment)
As shown in FIGS. 1 and 2, the lighting fixture 3 according to the embodiment includes a light source unit 2 and a fixture main body 4 that supports the light source unit 2. The light source unit 2 is detachably attached to the fixture body 4 directly attached to the ceiling. However, the instrument body 4 may be embedded in the ceiling, directly attached to the wall, or embedded in the wall.

The instrument body 4 has a rectangular box-shaped accommodation portion 40 having an open lower surface, a pair of reflecting plates 41 projecting obliquely upward from the opening edges on both sides along the longitudinal direction of the accommodation portion 40, the accommodation portion 40, and It is provided with a pair of end plates 42 provided at both ends in the longitudinal direction of the pair of reflection plates 41 (see FIG. 2 ). In the instrument body 4, suspension bolts (not shown) are respectively inserted into at least any two attachment holes 400 of the plurality of attachment holes 400 provided on the bottom surface of the housing section 40, and nuts ( It is installed on the ceiling by tightening (not shown). Further, the power supply line is inserted into any one of the plurality of power supply holes 401 provided on the bottom surface of the housing portion 40. The power line inserted through the power hole 401 is electrically connected to the lighting device 1 via a terminal block (not shown).

As shown in FIG. 2, the light source unit 2 includes a lighting device 1 and a plurality of (for example, two) LED modules 22 (light source modules) that are lighted by the lighting device 1. Further, the light source unit 2 preferably includes a mounting member 21 and a cover 23. When distinguishing two LED modules 22, two LED modules 22 are described as LED modules 22S and 22T.

The LED module 22 includes a plurality (for example, a large number) of first LEDs (Light Emitting Diodes) 220 (a first light source), one or more (for example, one) second LEDs 224 (a second light source), a substrate 221, and a relay connector. 223 and. The substrate 221 is formed in a rectangular shape (for example, a long rectangular plate shape).

The plurality of first LEDs 220 are LEDs for emitting the illumination light of the lighting fixture 3, and can emit light in the direction of the normal line A2 of the one main surface 221d of the substrate 221. The plurality of first LEDs 220 are, for example, white LEDs for illumination that emit white light. The plurality of first LEDs 220 are, for example, package-type or chip-on-board type LEDs. The plurality of first LEDs 220 are mounted in a line at equal intervals along the longitudinal direction H1 of the substrate 221 in the center of the one main surface 221d of the substrate 221 in the lateral direction H2. In the present embodiment, the plurality of first LEDs 220 are arranged in a row in the width direction of the substrate 221, but they may be arranged in a plurality of rows in the width direction of the substrate 221.

The second LED 224 is an LED for illuminating the portion between the adjacent LED modules 22, and can emit light to one side of both sides of the substrate 221 in the longitudinal direction H1. The second LED 224 may be referred to as a side view LED. The second LED 224 is an illumination LED that emits light of the same light color as that of the first LED 220 (for example, white). The second LED 224 is, for example, a package type or chip on board type LED. The second LED 224 is provided on the edge portion 221f of the one main surface 221d of the substrate 221 in the longitudinal direction H1.

The relay connector 223 is mounted on the board 221 of each LED module 22 at the end of the board 221 where two LED modules 22 are adjacent to each other along the longitudinal direction H1. The one LED module 22T further includes an input connector 222. The input connector 222 is mounted on the edge 221e on the side opposite to the side on which the relay connector 223 is mounted on the one main surface 221d of the substrate 221 of the LED module 22T.

The mounting member 21 is formed of a metal plate in a long rectangular gutter shape. The mounting member 21 has a long rectangular plate-shaped bottom plate 210, and a pair of side plates 211 that rise upward from both ends along the longitudinal direction of the bottom plate 210. The plurality of LED modules 22 are attached to the lower surface of the bottom plate 210 by a plurality of claws cut and raised from the bottom plate 210 in a state where the relay connectors 223 are electrically connected to each other. The input connector 222 of the LED module 22T is electrically connected to the output connector of the lighting device 1 by an electric wire.

The cover 23 is formed in a semi-cylindrical shape from a synthetic resin having a light-transmitting property such as an acrylic resin or a polycarbonate resin. The cover 23 also has a pair of projecting walls 233 that project upward along the longitudinal direction. The cover 23 accommodates the mounting member 21 between the pair of projecting walls 233, and the hooks formed at the tips (upper ends) of the pair of side plates 211 of the mounting member 21 at the tips (upper ends) of the pair of projecting walls 233. The part is hooked and attached to the attachment member 21. The lighting device 1 includes a printed circuit board 19 and a case 18 that houses the printed circuit board 19. The printed circuit board 19 is configured by mounting various electronic components including an integrated circuit on a rectangular printed wiring board. The case 18 is formed of a metal plate in the shape of a long rectangular box whose one surface (lower surface) is open. The case 18 accommodates the printed circuit board 19 and is fixed to the mounting member 21 so that the opening surface faces the upper surface of the bottom plate 210. It should be noted that the case 18 is electrically connected to the mounting member 21 while being fixed to the mounting member 21. Further, the attachment member 21 is electrically connected to the instrument body 4 in a state where the light source unit 2 is attached to the instrument body 4. Therefore, the case 18 of the lighting device 1 is electrically connected to the fixture body 4 through the mounting member 21.

The LED module 22 (22S, 22T) will be described in more detail with reference to FIG. The arrow H1 in FIG. 3 indicates the longitudinal direction of the substrate 221 and also the longitudinal direction of the one main surface 221d of the substrate 221. The arrow H2 in FIG. 3 is the short-side direction of the substrate 221 and also the short-side direction of the one main surface 221d of the substrate 221.

As described above, the LED module 22 includes the substrate 221, a plurality (for example, a large number) of the first LEDs 220 (first light sources), one or more (for example, one) second LEDs 224 (a second light source), and a plurality (for example, 2). Relay connector 223 (connecting portion).

The substrate 221 has a long rectangular plate shape. The substrate 221 has main surfaces 221u and 221d on both sides in the thickness direction. A plurality of first LEDs 220, one second LED 224, and two relay connectors 223 are provided on one main surface (eg, lower surface) 221d of the substrate 221.

The plurality of first LEDs 220 are arranged in a line at equal intervals along the longitudinal direction H1 of the substrate 221 at the center of the one main surface 221d of the substrate 221 in the lateral direction H2. That is, the plurality of second LEDs 224 are arranged along the virtual straight line L2. The virtual straight line L2 extends along the longitudinal direction H1 of the substrate 221. The outermost first LEDs 220A and 220B on both sides of the plurality of first LEDs 220 are arranged near the ends 221a and 221b on both sides of the substrate 221 in the longitudinal direction H1.

The optical axes A1 of the plurality of first LEDs 220 are directed to the outer side on one main surface 221d side of both outer sides of the substrate 221 in the thickness direction. In this case, the optical axis A1 may be parallel to the normal line A2 of the one main surface 221d of the substrate 221, or the optical axis A1 may be such that the light of the first LED 220 is outside the substrate 221 in the thickness direction. It may be inclined from the normal line A2 within a range in which light can be emitted to the outside on the one main surface 221d side. In the present embodiment, the optical axes A1 of the plurality of first LEDs 220 are parallel to the normal line A2 of the one main surface 221d of the substrate 221. That is, the light emitting surface of the first LED 220 is parallel to the one main surface 221d of the substrate 221. In this way, since the optical axis A1 is directed to the one main surface 221d side, the plurality of first LEDs 220 can emit light in the normal line A2 direction of the substrate 221.

The second LED 224 is provided on the edge portion 221f of the one main surface 221d of the substrate 221 in the longitudinal direction H1. The second LED 224 is arranged in the center of the edge portion 221f of the substrate 221 in the lateral direction H2 of the one main surface 221d of the substrate 221. The edge portion 221f is an edge portion adjacent to the edge portion 221e of the substrate 221 of the other LED module 22 among the edge portions 221e on both sides of the one main surface 221d of the substrate 221 in the longitudinal direction H1. That is, the second LEDs 224 are provided on the edge portions 221f of the substrates 221 of the plurality of LED modules 22 that are adjacent to each other. In the present embodiment, only one of the edge portions 221e on both sides of the substrate 221 is adjacent to the edge portion 221e of the substrate 221 of the other LED module 22. Therefore, in the present embodiment, the second LED 224 is provided only on one edge 221f of the edges 221e on both sides of the substrate 221. However, when the edge portions 221e of the other LED module 22 are adjacent to the edge portions 221e on both sides of the substrate 221, the second LEDs 224 are provided on each of the edge portions 221e on both sides of the substrate 221.

The optical axis A3 of the second LED 224 is directed to the outer side of the edge portion 221f side where the second LED 224 is provided, of both outer sides of the substrate 221 in the longitudinal direction H1. In this case, the optical axis A3 may be oriented in a direction parallel to the longitudinal direction H1 of the substrate 221. Further, in a range in which the light of the second LED 224 can illuminate the outer side on the edge 221f side of both outer sides of the substrate 221 in the longitudinal direction H1, the optical axis A3 is a plan view in the thickness direction of the substrate 221 (hereinafter, Simply referred to as “plan view of the substrate 211 ”), it may be oriented in a direction intersecting the longitudinal direction H1 of the substrate 221 (for example, a direction inclined by ±60 degrees from the longitudinal direction H1). In the present embodiment, the optical axis A3 of the second LED 224 is, for example, parallel to the longitudinal direction H1 of the substrate 221 in a plan view of the substrate 221. Further, the optical axis A3 of the second LED 224 is parallel to the one main surface 221d of the substrate 221, for example, in a side view of the substrate 221 (that is, viewed from the lateral direction H2 of the substrate 221). That is, the light emitting surface of the second LED 224 is orthogonal to the one main surface 221d of the substrate 221, and faces both the outer sides of the substrate 221 in the longitudinal direction H1 on the edge 221f side on which the second LED 224 is provided. ing.

The optical axis A3 of the second LED 224 is oriented in a direction that does not intersect with the relay connector 223 (in other words, a direction that does not strike). More specifically, in the present embodiment, the two relay connectors 223 are arranged on both ends of the edge portion 221f in the lateral direction H2, and the second LED 224 is arranged between the two relay connectors 223. .. In this arrangement state, the optical axis A3 of the second LED 224 is directed to the outer side of the substrate 221 on the edge 221f side in the longitudinal direction H1. Thereby, the optical axis A3 of the second LED 224 is oriented in a direction not intersecting with the relay connector 223.

The plurality of LED modules 22 are arranged in a line along the longitudinal direction H1 of the substrate 221. Edges 221f of the substrate 221 of each of the plurality of LED modules 22 in the longitudinal direction H1 are adjacent to each other. The second LED 224 is provided on each of the adjacent edge portions 221f of the adjacent LED modules 22. The respective second LEDs 224 face each other. That is, the respective second LEDs 224 are adjacent to each other along the longitudinal direction H1 of the substrate 221. In the present embodiment, the respective second LEDs 224 are arranged so as to be mirror-symmetrical to each other, including the direction of their optical axis A3. In addition, in the present embodiment, each of the second LEDs 224 is further arranged in axial symmetry with respect to an imaginary straight line L1 that passes through the centers between the adjacent LED modules 22 and is parallel to the normal line A2 of the substrate 221. ..

The distance D1 between the first LEDs 220A and 220B at the extreme ends of the adjacent LED modules 22 may be larger than the distance D2 between the adjacent first LEDs 220 in each substrate 221.

Next, the operation of the lighting fixture 3 will be described.

The plurality of first LEDs 220 of each of the plurality of LED modules 22 emit light in the direction of the normal line A2 of the substrate 221 (see FIG. 2 ). These lights pass through the cover 23 and are emitted to the outside as illumination light. The second LED 224 provided on the edge portion 221f of the substrate 221 emits light to the outer side on the edge portion 221f side of both outer sides of the substrate 221 in the longitudinal direction H1 (see FIG. 3 ). This light illuminates the edge 221f of the substrate 221 of the other LED module 22 adjacent to the edge 221f. That is, the part between the adjacent LED modules 22 is illuminated by the light emitted from the second LEDs 224. More specifically, the light emitted by the second LED 224 is reflected toward the cover 23 at the edge 221f of the adjacent LED module 22, passes through the cover 23, and is emitted as illumination light to the outside. As a result, even if the distance D1 is larger than the distance D2, it is possible to suppress a decrease in the luminous flux density in the portion between the adjacent LED modules 22 (that is, the portion having the distance D1). As a result, it is possible to reduce the unevenness of the brightness of the entire LED modules 22. That is, it is possible to reduce unevenness in the brightness of the illumination light of the lighting fixture 3.

Further, the optical axis A3 of the second LED 224 is parallel to the longitudinal direction H1 of the substrate 221 in the plan view of the substrate 221 (see FIG. 3). Therefore, the second LED 224 can effectively illuminate the location adjacent to the second LED 224 in the longitudinal direction H1 in the location between the adjacent LED modules 22.

The second LED 224 is arranged in the center of the substrate 221 in the short-side direction H2 (see FIG. 3). Therefore, the second LED 224 can effectively illuminate the center in the lateral direction H2 in the portion between the adjacent LED modules 22.

The optical axis A3 of the second LED 224 is oriented in a direction that does not intersect with the relay connector 223 (see FIG. 3). Therefore, it is possible to prevent the light from the second LED 224 from being blocked by the relay connector 223. Accordingly, the second LED 224 can effectively illuminate the portion between the adjacent LED modules 22.

In addition, the second LEDs 224 are provided on the adjacent edge portions 221f of the adjacent LED modules 22 (see FIG. 3 ). That is, the respective second LEDs 224 are adjacent to each other along the longitudinal direction H1 of the substrate 221. Therefore, the portion between the adjacent LED modules 22 can be illuminated from both sides of this portion. As a result, it is possible to further suppress the unevenness of the luminous flux density in the portion between the adjacent LED modules 22.

The second LEDs 224 of the adjacent LED modules 22 are arranged so as to be mirror-symmetrical to each other, including the direction of the optical axis A3 (see FIG. 3). Therefore, it is possible to effectively suppress the unevenness of the luminous flux density in the portion between the adjacent LED modules 22. In the present embodiment, the second LEDs 224 of the adjacent LED modules 22 are axially symmetric with respect to the virtual straight line L1 that passes through the centers between the adjacent LED modules 22 and is parallel to the normal line A2 of the substrate 221. Are also arranged (see FIG. 3). This also makes it possible to effectively suppress the unevenness of the luminous flux density in the portion between the adjacent LED modules 22.

In addition, although the case where two LED modules 22 are provided is illustrated in the present embodiment, three or more LED modules 22 may be provided. In this case, the second LEDs 224 may be provided on each of the adjacent edge portions 221f in at least one set of adjacent LED modules 22. Also in this case, it is possible to suppress a decrease in the luminous flux density in the portion between the adjacent LED modules 22.

(Modification of the embodiment)
Hereinafter, modified examples of the above embodiment will be described. In the following description, the same components as those in the above-described embodiment may be assigned the same reference numerals and may not be described. It should be noted that a combination of the modified examples of the above-described embodiments can be implemented.

(Modification 1)
In the above embodiment, only one second LED 224 is provided at the center of the edge portion 221f of the substrate 221 in the lateral direction H2. However, as shown in FIG. 4, a plurality of (for example, two) second LEDs 224 may be provided in the edge portion 221f of the substrate 221 along the lateral direction H2. In the example of FIG. 4, the two second LEDs 224 described above are arranged at positions displaced from the virtual straight line L2 in a direction orthogonal to the virtual straight line L2. More specifically, the above-mentioned two second LEDs 224 are arranged at positions offset from each other in the direction orthogonal to the virtual straight line L2. The virtual straight line L2 is a line in which the plurality of first LEDs 220 are arranged. Further, in the present embodiment, the above-mentioned two second LEDs 224 are arranged so as to be symmetrical with respect to the virtual straight line L2.

Also in this modification, the optical axes A3 of the plurality of second LEDs 224 are parallel to the longitudinal direction H1 of the substrate 221 in a plan view of the substrate 221, and in a side view of the substrate 221, the substrate 221 is also similar to the above embodiment. It is parallel to the one main surface 221d. Also in this modification, a plurality of (for example, two) second LEDs 224 are provided on each of the adjacent edge portions 221f of the adjacent LED modules 22. The two second LEDs 224 of each of the adjacent LED modules 22 are arranged so as to be mirror-symmetrical to each other, including in the direction of their optical axis A3.

In this modification, the two second LEDs 224 of each of the adjacent LED modules 22 are also arranged so as to be axially symmetrical with respect to the virtual straight line L1. The virtual straight line L1 is a line that passes through the centers between the adjacent LED modules 22 and is parallel to the normal line A2 of the one main surface 221d of the substrate 221.

In this modification, the relay connector 223 is provided, for example, on one of the main surfaces 221u and 221d on both sides of the substrate 221, the main surface 221u opposite to the one main surface 221d.

(Modification 2)
In Modification 2, the optical axis A3 of the second LED 224 is parallel to the longitudinal direction H1 of the substrate 221 in plan view. However, as shown in FIG. 5, the optical axis A3 of the second LED 224 may intersect the longitudinal direction H1 of the substrate 221 in a plan view of the substrate 221. More specifically, the optical axis A3 of the second LED 224 may be inclined outward in the lateral direction H2 of the substrate 221 with respect to the longitudinal direction H1 of the substrate 221 in the plan view of the substrate 221. In this modification, the optical axis A3 of the second LED 224 is inclined, for example, 30 degrees from the longitudinal direction H1 of the substrate 221 to the outside in the lateral direction H2 of the substrate 221. In this way, the optical axis A3 of the second LED 224 intersects with the longitudinal direction H1 of the substrate 221 in a plan view of the substrate 221, so that the second LED 224 is disposed at a position between the adjacent LED modules 22 in the place where the second LED 224 is disposed. It is possible to effectively illuminate the adjacent place in the direction intersecting the longitudinal direction H1.

In this modification, the optical axis A3 of the second LED 224 is inclined outward in the lateral direction H2 of the substrate 221 with respect to the longitudinal direction H1 of the substrate 221, in the plan view of the substrate 221. You may incline in the lateral direction H2 of the board|substrate 221 with respect to the longitudinal direction H1.

In this modification, the relay connector 223 is provided, for example, on one of the main surfaces 221u and 221d on both sides of the substrate 221, the main surface 221u opposite to the one main surface 221d.

(Modification 3)
In the above embodiment, the second LED 224 is arranged at the center of each of the adjacent edge portions 221f of the adjacent LED modules 22. However, as shown in FIG. 6, in each of the adjacent edge portions 221f of the adjacent LED modules 22, the second LEDs 224 are arranged in a direction (short direction H2) orthogonal to the virtual straight line L2 from the virtual straight line L2. They may be arranged at positions displaced in the opposite direction. As a result, it is possible to prevent the second LED 224 of the adjacent LED module 22 from being arranged within the irradiation range of the second LED 224. As a result, the edge portions 221f of the adjacent LED modules 22 can be effectively illuminated by the light emitted by the second LEDs 224.

In this modification, the second LEDs 224 of the adjacent LED modules 22 are arranged so as to be axially symmetric with respect to the virtual straight line L1. The virtual straight line L1 is a line that passes through the centers between the adjacent LED modules 22 and is parallel to the normal line A2 of the one main surface 221d of the substrate 221.

(Modification 4)
In the above embodiment, the second LEDs 224 are provided on each of the adjacent edge portions 221f of the adjacent LED modules 22. However, as shown in FIG. 7, the second LED 224 may be provided only on one edge 221f of the adjacent edges 221f of the adjacent LED modules 22. That is, in the present modification, the LED module 22S includes both the plurality of LEDs 22 and one second LED 224, but the LED module 22T includes the plurality of first LEDs 220 and one second LED 224. Only 1 LED 220 is provided. The second LED 224 is arranged at the center of the edge portion 221f in the lateral direction H2, and the optical axis A3 of the second LED 224 is parallel to the longitudinal direction H1 of the substrate 221 in plan view of the substrate 221.

Also in this modification, the portion between the adjacent LED modules can be illuminated by the second LED 224. As a result, it is possible to suppress a decrease in the luminous flux density in the portion between the adjacent LED modules 22.

In addition, although this modification illustrates a case where two LED modules 22 are provided, three or more LED modules 22 may be provided. In this case, at least one of the plurality of light source modules 22 is the LED module 22S or 22T of the above embodiment. The other LED module 22 has a configuration in which the second LED 224 is omitted from the light source module 22S or 22T of the above embodiment. That is, in this case, each of the plurality of LED modules 22 includes the substrate 221, and at least a plurality of first LEDs 220 among the plurality of first LEDs 220 and one second LED 224. The substrates 221 of the plurality of LED modules 22 are arranged along the longitudinal direction of the substrate 221.

Although this modification is applied to the above-mentioned embodiment, it may be applied to any of modifications 1-3. FIG. 8 is a plan view when the present modification is applied to Modification 1, and FIG. 9 is a plan view when the present modification is applied to Modification 2. In the case of FIG. 8, a plurality of (for example, two) second LEDs 224 are arranged side by side in the lateral direction H2 of the substrate 221 at the edge portion 221f of the LED module 22S. The optical axis A3 of each second LED 224 is parallel to the longitudinal direction H1 of the substrate 221 in a plan view of the substrate 221. In the case of FIG. 9, a plurality of (for example, two) second LEDs 224 are arranged side by side in the lateral direction H2 of the substrate 221 at the edge 221f of the LED module 22S. The optical axis A3 of each second LED 224 is inclined outward in the lateral direction H2 of the substrate 221 with respect to the longitudinal direction H1 of the substrate 221 in a plan view of the substrate 221.

(Summary)
The light source module (22) of the first aspect includes a substrate (221), a plurality of first light sources (220), and one or more second light sources (224). The plurality of first light sources (220) are provided on one main surface (221d) of the substrate (221), and are arranged along the longitudinal direction (H1) of the substrate (221). The second light source (224) is provided at the edge portion (221f) in the longitudinal direction (H1) on the one main surface (221d). The optical axes (A1) of the plurality of first light sources (220) are directed outward toward one main surface (221d) of both outer sides of the substrate (221) in the thickness direction. The optical axis (A3) of the second light source (224) is directed to the outer side on the edge (221f) side of both outer sides of the substrate (221) in the longitudinal direction (H1).

According to this configuration, the second light source (224) is provided at the edge portion (221f) in the longitudinal direction (H1) of the one main surface (221d) of the substrate (221), and the light of the second light source (224) is emitted. The axis (A3) is directed to the outer side on the edge (221f) side of both outer sides of the substrate (221) in the longitudinal direction (H1). Therefore, when the plurality of light source modules (22) are arranged in a line, the second light source (224) can illuminate the part between the adjacent light source modules (22). As a result, it is possible to suppress a decrease in the luminous flux density in the portion between the adjacent light source modules (22). As a result, it is possible to reduce unevenness in the brightness of the plurality of light source modules (22) as a whole.

The light source module (22) of the second aspect is the substrate (221) of the first aspect, wherein the edge portion (221f) of the substrate (221) is provided with the plurality of light sources (220) of the other light source module (22). 221).

According to this configuration, when the plurality of light source modules (22) are arranged in a line, the edge portion (221f) provided with the second light source (224) is the substrate (221) of the other light source module (22). ) Can be next to each other. As a result, the second light source (224) can effectively illuminate the portion between the adjacent light source modules (22).

In the light source module (22) of the third aspect, in the first or second aspect, the optical axis (A3) of the second light source (224) is a substrate (plan view in the thickness direction of the substrate (221). 221) parallel to the longitudinal direction (H1).

According to this configuration, when the plurality of light source modules (22) are arranged in a line, the second light source (224) has the second light source (224) in the portion between the adjacent light source modules (22). It is possible to effectively illuminate a location adjacent to the arrangement location in the longitudinal direction (H1).

In the light source module (22) of the fourth aspect, in the first or second aspect, the optical axis (A3) of the second light source (224) is a substrate (plan view in the thickness direction of the substrate (221). 221) in the longitudinal direction (H1).

According to this configuration, when the plurality of light source modules (22) are arranged in a line, the second light source (224) has the second light source (224) in the portion between the adjacent light source modules (22). It is possible to effectively illuminate the adjacent place in the direction intersecting the longitudinal direction (H1) in the arrangement place.

A light source module (22) according to a fifth aspect is the light source module (22) according to any one of the first to fourth aspects, wherein the second light source (224) is a short side of the substrate (221) on one main surface (221d). It is arranged at the center of the direction (H2).

According to this configuration, when the plurality of light source modules (22) are arranged in a line, the second light source (224) has the center in the lateral direction (H2) in the portion between the adjacent light source modules (22). Can be illuminated effectively.

A light source module (22) according to a sixth aspect is the light source module (22) according to any one of the first to fifth aspects, wherein the plurality of first light sources (220) is a plan view in a thickness direction of the substrate (221). They are arranged along an imaginary straight line (L2) extending in the longitudinal direction (H1) of the substrate (221). The second light source (224) is arranged at a position deviated from a virtual straight line (L2) in a direction (shorter direction H2) orthogonal to the virtual straight line (L2) in a plan view of the substrate (221). ..

According to this structure, the light emitted from the first light source (220A, 220B) at the end to the edge (221f) side adjacent to the first light source (220A, 220B) is the second light source (224). ) Can be suppressed. Accordingly, the first light source (220A, 220B) at the end can also effectively illuminate the portion between the adjacent light source modules (22).

The light source module (22) of the seventh aspect is any one of the first to sixth aspects, further including a connecting portion (223). Wiring from the outside (another light source module 22) can be electrically connected to the connection portion (223). The connection portion (223) is provided on the edge portion (221f) of the one main surface (221d). The optical axis (A3) of the second light source (224) is oriented in a direction that does not intersect the connecting portion (223).

With this configuration, it is possible to prevent the light from the second light source (224) from being blocked by the connection portion (223). Thereby, when the plurality of light source modules (22) are arranged in a line, the second light source (224) can effectively illuminate the portion between the adjacent light source modules (22).

The light source unit (2) of the eighth aspect includes a plurality of light source modules (22). At least one of the plurality of light source modules (22) is the light source module (22) according to any one of the first to seventh aspects. Each of the plurality of light source modules (22) includes a substrate (221) and at least a plurality of first light sources (220) of a plurality of first light sources (220) and second light sources (224). There is. The substrate (221) of each of the plurality of light source modules (22) is arranged along the longitudinal direction (H1) of the substrate (221).

According to this configuration, in the light source unit (2) including the plurality of light source modules (22) arranged in a line, the above effects of the light source module (22) can be obtained.

The light source unit (2) according to the ninth aspect is the light source unit (2) according to the eighth aspect, wherein at least one set of adjacent light source modules (22) among the plurality of light source modules (22) has an adjacent edge portion (221f). , A second light source (224) is provided.

With this configuration, the second light source (224) can illuminate the portion between the adjacent light source modules (22) from both sides of this portion.

In the light source unit (2) of the tenth aspect, in the ninth aspect, the second light sources (224) of the adjacent light source modules (22) are mutually arranged along the longitudinal direction (H1) of the substrate (221). Next to each other.

According to this structure, the portion between the adjacent light source modules (22) can be illuminated from both sides of this portion.

In the light source unit (2) of the eleventh aspect, in the ninth aspect, the plurality of first light sources (220) include the plurality of first light sources (220) in the longitudinal direction (H1) of the substrate (221) in a plan view in the thickness direction of the substrate (221). ) Are arranged along an imaginary straight line (L2). The second light sources (224) of the adjacent light source modules (22) each have a direction (shorter direction H2) orthogonal to the virtual straight line (L2) in the plan view of the substrate (221). ) Are displaced in opposite directions.

With this configuration, it is possible to prevent the second light source (224) of the adjacent light source module (22) from being arranged within the irradiation range of the second light source (224). Thereby, the edge portion (221f) of the substrate (221) of the adjacent light source module (22) can be effectively illuminated by the light emitted from the second light source (224).

In the light source unit (2) of the twelfth aspect, in the ninth aspect, the second light sources (224) of the adjacent light source modules (22) are arranged so as to be mirror-symmetrical to each other, or They are arranged in axial symmetry with respect to an imaginary straight line (L1) that passes through the centers between adjacent light source modules (22) and is parallel to the normal line (A2) of the substrate (221).

With this configuration, it is possible to effectively suppress unevenness of the luminous flux density in the portion between the adjacent light source modules (22).

A lighting fixture (3) according to a thirteenth aspect includes a light source unit (2) according to any one of the eighth to twelfth aspects, and a fixture main body (4) that supports the light source unit (2). ing.

With this configuration, it is possible to reduce unevenness in the brightness of the illumination light of the lighting fixture (3).

2 light source unit 3 lighting fixture 4 fixture main body 22 LED module (light source module)
220 First LED (first light source)
221 Substrate 221d One main surface 221f Edge 223 Relay connector (connecting part)
224 Second LED (second light source)
L1, L2 Virtual straight line H1 Longitudinal direction H2 Shortest direction

Claims (13)

Board,
A plurality of first light sources provided on one main surface of the substrate and arranged along the longitudinal direction of the substrate;
One or more second light sources provided on the edge in the longitudinal direction of the one main surface,
The optical axes of the plurality of first light sources are directed to the outer side of the one main surface side of both outer sides in the thickness direction of the substrate,
The optical axis of the second light source is directed to the outer side on the edge side of both outer sides of the substrate in the longitudinal direction.
Light source module. The edge portion of the substrate is adjacent to a substrate provided with a plurality of light sources in another light source module,
The light source module according to claim 1. The optical axis of the second light source is parallel to the longitudinal direction of the substrate in a plan view in the thickness direction of the substrate,
The light source module according to claim 1 or 2. The optical axis of the second light source intersects with the longitudinal direction of the substrate in a plan view in the thickness direction of the substrate,
The light source module according to claim 1 or 2. The second light source is arranged at the center of the one main surface in the lateral direction of the substrate,
The light source module according to claim 1. The plurality of first light sources are arranged along a virtual straight line extending in the longitudinal direction of the substrate in a plan view in the thickness direction of the substrate,
The second light source is arranged at a position deviated from the virtual straight line in a direction orthogonal to the virtual straight line in a plan view of the substrate,
The light source module according to claim 1. Further provided with a connecting portion to which wiring from the outside can be electrically connected,
The connection portion is provided on the edge portion of the one main surface,
The optical axis of the second light source is oriented in a direction not intersecting with the connecting portion,
The light source module according to claim 1. Equipped with multiple light source modules,
At least one of the plurality of light source modules is the light source module according to any one of claims 1 to 7,
Each of the plurality of light source modules,
The substrate;
At least the plurality of first light sources of the plurality of first light sources and the second light source,
The substrate of each of the plurality of light source modules is arranged along the longitudinal direction of the substrate,
Light source unit. The second light source is provided on each of the adjacent edge portions of at least one set of adjacent light source modules of the plurality of light source modules.
The light source unit according to claim 8. The second light sources of the adjacent light source modules are adjacent to each other along the longitudinal direction of the substrate.
The light source unit according to claim 9. The plurality of first light sources are arranged along a virtual straight line extending in the longitudinal direction of the substrate in a plan view in the thickness direction of the substrate,
The second light sources of each of the adjacent light source modules are arranged at positions displaced from the virtual straight line in mutually opposite directions in a direction orthogonal to the virtual straight line in a plan view of the substrate,
The light source unit according to claim 9. The second light source of each of the adjacent light source modules is arranged so as to be mirror-symmetrical to each other, or a virtual light source that passes through the center between the adjacent light source modules and is parallel to the normal line of the substrate. Arranged symmetrically with respect to a straight line,
The light source unit according to claim 9. A light source unit according to any one of claims 8 to 12,
A lighting fixture, comprising: a fixture main body that supports the light source unit.

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