WO2012157145A1 - Lighting device - Google Patents

Abstract

This lighting device contains multiple light-emitting blocks each having a rod-form light guide and a light-emitting unit, and a main body casing housing the light-emitting blocks. The light guides have an entrance surface facing the light-emitting unit, and an exit surface for emitting the light of the light-emitting unit from the entrance surface. The entrance surfaces are provided at one end in the longitudinal direction of the light guides, and the exit surfaces are provided on a lateral surface section intersecting the longitudinal direction of the light guides. The light-emitting blocks are housed in the main body casing such that the longitudinal directions of the light guides are arranged in series.

Description

Lighting equipment

The present invention relates to a lighting device having a plurality of light sources.

Conventionally, long (line) lighting devices have been proposed for lighting around the kitchen sink and inside the showcase. In recent years, an illumination unit using a light emitting element such as an LED as a light source instead of a conventional fluorescent lamp has been proposed. For example, in Japanese Patent Application Publication No. 2010-170847 (hereinafter referred to as “Document 1”), a lighting unit in which a plurality of light sources having light emitting elements are arranged on the surface of a support along the longitudinal direction of the support. Has been proposed.

However, in the illumination unit as described in the above-mentioned document 1, in order to lengthen the light from each light source while suppressing uneven color, the light sources are relatively arranged along the longitudinal direction of the support. Many light sources need to be provided close to each other, and further improvement has been desired. In addition, compared to conventional fluorescent lamps, it is possible to reduce the size (miniaturization of the short cross section), but in order to suppress color unevenness along the longitudinal direction, a reflector or the like is provided on the surface side of each light source. It was necessary to provide it, and further improvement was desired.

An object of the present invention is to provide an illuminating device that can be elongated with a simple structure and can be reduced in size in a short cross section.

In order to achieve the above object, a lighting device of the present invention includes a plurality of light-emitting blocks (1,...) Each including a rod-shaped light guide (10) and a light-emitting unit (24), and a plurality of these light-emitting blocks ( 1, ...) and a main body casing (2). The light guide (10) includes an incident surface (13) facing the light emitting portion (24) and an exit surface (14) for emitting light of the light emitting portion (24) from the incident surface (13). ). The entrance surface (13) is provided at one end (11) in the longitudinal direction of the light guide (10), and the exit surface (14) intersects the longitudinal direction of the light guide (10). Provided on the side surface. The plurality of light emitting blocks (1,...) Are accommodated in the main casing (2) so that the longitudinal directions of the light guides (10,...) Are arranged (aligned) in series.

In one embodiment, the light emitting unit includes two light emitting elements (24, 24). The light guide (10) includes two incident surfaces (13, 13) provided at both ends (11, 11) in the longitudinal direction of the light guide (10). The two light emitting elements (24, 24) of the light emitting part are arranged so as to face the two incident surfaces (13, 13) of the light guide (10), respectively.

In one embodiment, the main body casing (2) is formed so as to cover the emission surface (14, ...) side of the light guide (10, ...) of the plurality of light emitting blocks (1, ...). A case portion (40) and a fixed case portion (50) formed so as to cover the opposite side of the light emission surface (14,...) Of the light guide (10,...) And fixed to the installation target. The front side case portion (40) and the fixed case portion (50) are engaged with a first engagement portion (45, 46) and a second engagement portion (55, 56) for engaging with each other. It is assembled with.

In one embodiment, the surface side case portion (40) is made of metal. The front side case portion (40) has an opening (43) for allowing light from the emission surface (14, ...) of the light guide (10, ...) of the plurality of light emitting blocks (1, ...) to pass through. Is provided.

In one embodiment, each of the plurality of light emitting blocks (1,...) Includes a substrate (20) on which its own light emitting part (24) is mounted, or two light emitting elements (24, 24) of its own light emitting part. 24) each have a substrate (20, 20) on which it is mounted. The front surface case portion (40) includes a plurality of cover pieces (44,...) That respectively cover the substrates (20,...) Of the plurality of light emitting blocks (1,. The opening (43) is divided into a plurality of openings in the longitudinal direction of the surface side case (40) by the plurality of cover pieces (44,...).

In one embodiment, the surface side case portion (40) includes a translucent surface cover that covers the opening (43) or the plurality of openings (43).

The present invention is configured as described above, so that the length can be increased with a simple structure, and the short section can be reduced in size.

Preferred embodiments of the invention are described in further detail. Other features and advantages of the present invention will be better understood with reference to the following detailed description and accompanying drawings.
1A to 1C schematically show an illuminating device according to an embodiment of the present invention, FIG. 1A is a schematic bottom view, FIG. 1B is a schematic cross-sectional view in which a part of FIG. 1A is omitted, and FIG. FIG. 2 is a partially broken schematic enlarged cross-sectional view corresponding to a Z1 portion in FIG. 1B. 2A and 2B schematically show a state in which the illumination device is installed on an installation target, FIG. 2A is a schematic front view, and FIG. 2B is a schematic side view. 3A is a schematic vertical cross-sectional view corresponding to the view taken along the line Y1-Y1 in FIG. 1A, FIG. 3B is a schematic vertical cross-sectional view taken along the line Y2-Y2 in FIG. 1A, and FIG. FIG. 6 is a partially omitted schematic enlarged exploded bottom view corresponding to a Z2 portion in FIG. 4A and 4B schematically show an example of a rod-shaped light guide provided in the illumination device, FIG. 4A is a schematic front view, and FIG. 4B is a schematic perspective view. 5A to 5D schematically show an example of a substrate and a substrate base included in the illumination device, FIG. 5A is a schematic exploded side view, FIGS. 5B and 5C are schematic exploded perspective views, and FIG. 5D is a schematic diagram. It is a perspective view. 6A and 6B are schematic longitudinal sectional views schematically showing an example of the procedure for assembling the illumination device, and corresponding to FIG. 3A.

FIG. 1 to FIG. 6 are conceptual explanatory diagrams of the illumination device in the present embodiment. In FIG. 6, the substrate and the substrate base (substrate case) are shown without being broken. As shown in FIG. 1, the illumination device 3 according to the present embodiment includes a light emitting block (1,...) As a plurality of light emitting members and a main body casing 2 that houses the plurality of light emitting blocks (1,...). ing.

In the present embodiment, as shown in FIG. 2, an example in which the lighting device 3 is installed in the kitchen device 4 is shown. The kitchen apparatus 4 includes a floor unit 5 and a wall unit 6. The floor unit 5 includes a sink, a heating cooker, a top plate (work top), a plurality of storage units (cabinets), and the like, and is installed on the floor side. The wall unit 6 has a hanging cupboard as a plurality of storage units, and is disposed on the upper side of the floor unit 5.

In the illustrated example, the wall unit 6 is disposed on the upper side of the floor unit 5 except for the upper side of the stove (heating cooker) cooking table provided in the floor unit 5. In this embodiment, the illuminating device 3 is installed in this wall unit 6, and as shown to FIG. 2A, the length dimension of the illuminating device 3 is made into the dimension of the left-right direction (width direction, frontage direction) of the wall unit 6. And an example with substantially the same dimensions. Moreover, the example which fixed the illuminating device 3 to the front end part lower surface of the bottom plate of the hanging cupboard with which the wall unit 6 is provided is shown in FIG. 2B. In addition, a wiring hole through which a power cord for supplying power to the lighting device 3 is inserted is provided in the bottom plate of the wall cabinet of the wall unit 6 so that the interior of the ceiling cabinet, the interior of the wall, etc., through the wiring hole. Then, a power cord or the like connected to the lighting device 3 may be wired.

As shown in FIG. 1C, the light-emitting block 1 has a substrate 20 having an LED (light-emitting diode) 24 as a light-emitting portion (light-emitting element), and a rod shape for emitting (irradiating) light from the LED 24 on the substrate 20. The light guide 10 and a substrate case 30 as a substrate base for holding the substrate 20 are provided.

In the present embodiment, the light emitting block 1 is illustrated in which a substrate 20 having LEDs 24 is disposed at both end portions 11 and 11 in the longitudinal direction of the light guide 10 formed in a long bar shape. In the present embodiment, the longitudinal directions of a plurality (four in the illustrated example) of the light guides 10 in which the substrates 20 are disposed at both end portions 11 and 11 are arranged (aligned) in series. A plurality of (four in the illustrated example) light emitting blocks 1 are disposed in the main casing 2 (see FIG. 1B). Further, a substrate case 30 is provided between each of the plurality of light guides 10 and on each of the end portions 11 and 11 on the outer side in the longitudinal direction of the respective light guides 10 positioned on both end sides in the longitudinal direction of the lighting device 3. The example which has arrange | positioned is shown (refer FIG. 1B).

As shown in FIG. 1C and FIG. 4, the light guide 10 is formed into a long bar shape, and has incident surfaces 13 and 13 at both ends 11 and 11 thereof, and two LEDs 24 and 24 are respectively incident surfaces 13 and 13. 13 so as to face 13. In this embodiment, as shown in FIG. 1C and FIG. 4B, the both ends 11 and 11 of the light guide 10 are tapered toward the outer side in the longitudinal direction of the light guide 10 and the outer peripheral surface is convex. A lens-like portion having a curved shape is provided. The lens-shaped portion is provided with a substantially cylindrical recess that opens toward the outer side in the longitudinal direction and receives the LED 24, and the bottom surface and the inner peripheral side surface of the recess serve as the incident surface 13. According to such a structure, the light radiate | emitted from LED24 can be efficiently incident toward the longitudinal direction center side. The incident surface 13 is not limited to such a mode in which a concave portion is provided in the lens-shaped portion, and may be a substantially flat surface arranged so that the LED 24 faces.

The light guide 10 has an exit surface 14 for emitting light from the entrance surfaces 13 and 13 on one side surface in the longitudinal direction substantially intersecting the entrance surfaces 13 and 13. The reflective surface 15 is provided in the other side surface part along the longitudinal direction which substantially cross | intersects the entrance planes 13 and 13 on the opposite side. Further, both side surfaces along the remaining longitudinal direction substantially intersecting the incident surfaces 13 and 13 are reflection side surfaces 17 and 17.

The light guide 10 reflects light incident from the incident surfaces 13 and 13 by the reflection surface 15 and the reflection side surfaces 17 and 17 and guides the light along the longitudinal direction of the light guide 10, while exiting the light. 14 is a so-called edge light structure. In the example of FIGS. 2B and 3B, the illumination device 3 is arranged with the emission surface 14 facing downward so that light is emitted downward.

In the present embodiment, the emission surface 14 has a substantially arc shape (convex curved surface shape) with a predetermined line along the longitudinal direction of the light guide 10 as a center (see FIG. 3B). By making the emission surface 14 have such a convex curved surface shape, it is possible to reduce the diffusion of light emitted from the emission surface 14 in the direction toward the reflection side surfaces 17 and 17 (front-rear direction). The exit surface 14 may be a substantially flat surface instead of such a convex curved surface shape.

The reflection surface 15 disposed on the opposite side (for example, the upper side) of the emission surface 14 and provided so as to be substantially parallel to the emission surface 14 is formed in the longitudinal direction of the light guide 10 as shown in FIGS. It is set as the inclined surface which inclines toward the output surface 14 as it goes to the center. With the reflection surface 15 having such a configuration, light incident from the incident surface 13 can be emitted from the emission surface 14 relatively uniformly along the longitudinal direction of the light guide 10. Note that the reflecting surface 15 may be substantially coplanar instead of such an inclined surface.

The reflection surface 15 is formed with a reflection pattern 16 that reflects the guided light toward the exit surface 14 side. In this embodiment, as shown in FIGS. 4A and 4B, the reflective pattern 16 is formed by a large number of prismatic reflective grooves (16,...). These reflective grooves (16,...) Are formed along a direction orthogonal to the longitudinal direction of the light guide 10 (opposite direction of the reflective side surfaces 17, 17), and are spaced along the longitudinal direction. Is provided. That is, these reflective grooves (16,...) Are formed along a direction parallel to the incident surfaces 13, 13 (the bottom surface of the recess in the figure) and are provided in parallel to each other. These reflective grooves (16,...) May be provided substantially symmetrically with a center line in the longitudinal direction of the light guide 10 interposed therebetween. That is, you may make it provide these reflective ditch | grooves (16, ...) in the substantially line symmetrical form by making the centerline into a symmetrical axis. Moreover, each shape of these reflective ditch | grooves (16, ...) can be suitably set according to the desired light distribution pattern of the light radiate | emitted from the output surface 14, and is substantially V shape or substantially reverse two. It is good also as an equilateral triangle shape, another inverted triangle shape, a substantially inverted trapezoid shape, etc.

By configuring the reflective pattern of the reflective surface 15 with reflective concave grooves (16,...), For example, a scattering dot pattern is formed by applying white ink or the like, or the reflective pattern is formed by another member such as a diffuser or a reflective plate. Is relatively easy to manufacture and can be a simple structure. Moreover, since the reflective ditch | groove (16, ...) is formed along the direction (opposite direction of the reflective side surfaces 17 and 17) orthogonal to the longitudinal direction of the said light guide 10, it opposes the reflective side surfaces 17 and 17. The diffusion of light in the direction can be suppressed.

In addition, the pitch in which the reflective grooves (16,...) Are provided at intervals along the longitudinal direction of the light guide 10 may be substantially the same pitch along the longitudinal direction. Alternatively, the reflective grooves (16,...) Are provided so as to become denser toward the center in the longitudinal direction so that light can be emitted from the exit surface 14 relatively uniformly along the longitudinal direction. It is good also as an aspect. Further, in place of the reflective pattern formed by the reflective concave grooves (16,...), The reflective pattern is constituted by a scattering dot pattern formed by applying white ink or the like, or another member such as a diffusion plate or a reflective plate. It is good also as an aspect which does.

The reflection side surfaces 17 and 17 may be formed in an inclined shape (tapered shape) so as to expand from the reflection surface 15 toward the emission surface 14. With the reflection side surfaces 17 and 17 having such a configuration, the light reflected and diffused by the reflection surface 15 can be emitted toward the emission surface 14. That is, it is possible to more effectively suppress the diffusion of light in the direction in which the reflective side surfaces 17 and 17 face each other. Instead of such a mode, the reflecting surface 15 and the emitting surface 14 have substantially the same width dimension (a dimension along the opposing direction of the reflecting side surfaces 17 and 17), and the reflecting side surfaces 17 and 17 are flat surfaces that are substantially parallel to each other. It is good.

Further, in the present embodiment, the engaging portions 12 that engage with the engaging portions 23 of the substrate 20 described later are provided on both end portions 11 of the light guide 10. In this embodiment, the engaging portion 12 of the light guide 10 protrudes along the longitudinal direction of the light guide 10 and is formed as a pair of engaging protrusions as shown in FIGS. 1C and 4. 12 and 12. These engagement protrusions 12 and 12 are provided so as to be attached to an end portion in the longitudinal direction of one reflection side surface 17. The light guide 10 may be integrally formed of a light-transmitting or transparent resin material such as acrylic resin or polycarbonate resin, or a material having a high refractive index such as transparent glass.

As shown in FIGS. 1C and 5, the substrate 20 has a thin flat plate shape. On the surface 21 side (light guide body 10 side) of the substrate 20, an LED 24 or a connector 25 serving as a light emitting element serving as a light source. Electronic parts such as are mounted. In the illustrated example, an LED 24 is provided in one (first) part (front part) of the substantially rectangular substrate 20 that is substantially bisected in the longitudinal direction, and a connector is provided in the other (second) part (rear part). The example which provided 25 is shown. Further, the substrate 20 includes engaging portions 23 and 23 that engage with the engaging portions 12 and 12 of the end portion 11 of the light guide 10 described above. As shown in FIGS. 3B and 6B, these engaging portions 23 and 23 are formed at the front end portion of the front portion of the substrate 20 so as to correspond to the engaging protrusion portions 12 and 12 of the end portion 11 of the light guide 10. Has been. The LED 24 is not limited to a cannonball type in which a light emitting element (LED element) as shown in the figure is sealed with a resin or the like, and may be in other shapes such as a chip shape. You may make it employ | adopt a thing. Moreover, the board | substrate 20 is good also as what was formed from metal-type materials, such as aluminum, from a viewpoint etc. which improve the heat conductivity from the various electronic components etc. which are mounted in the said board | substrate 20, and improve heat dissipation. It is good also as a multilayer structure which laminated | stacked etc.

As shown in FIGS. 1C and 5, a heat transfer (heat radiation) sheet 26 is laminated on the back surface 22 side of the substrate 20 so as to be laminated. As the heat transfer sheet 26, a gel sheet such as a silicone gel having good thermal conductivity, a silicone sheet, or other resin sheets may be employed. In the present embodiment, a resin sheet that can be compressed and deformed (elastically deformed) at least in its own thickness direction is employed.

As shown in FIGS. 1C and 5, the substrate case 30 has a wall portion 31 for mounting the substrate, and the back surfaces 22 and 22 of the two substrates 20 and 20 are disposed on both sides in the thickness direction of the wall portion 31. The That is, the substrate case 30 is configured to be able to hold the substrates 20 and 20 on both sides in the thickness direction of the wall portion 31, and is configured to be able to hold the two substrates 20 and 20 in a back-to-back state. ing. In addition, both side surfaces in the thickness direction of the wall portion 31 are arranged in a direction along the longitudinal direction of the light guide 10. That is, the light guide 10 is disposed with its longitudinal direction along the thickness direction of the wall portion 31.

Further, the board case 30 is provided with contact piece portions 36 and 36 that come into contact with a main body casing 2 (fixed case portion 50), which will be described later, as an attachment target of the board case 30. The contact piece portions 36, 36 extend to both sides in the thickness direction of the wall portion 31 from the side end portion of the wall portion 31 on the opposite side (upper side in the illustrated example) of the light guide 10. It is formed to do. That is, these contact piece portions 36 and 36 are disposed on the reflecting surface 15 side of the light guide 10. Further, the side portions of the substrates 20 and 20 (in the example of FIG. 3B (FIG. 5B)) abut on the contact piece portions 36 and 36. By providing the contact piece portions 36 and 36 in the substrate case 30, the heat of the substrates 20 and 20 is transferred to the attachment target side through the wall portion 31 and the contact piece portions 36 and 36, thereby providing an effect. Heat can be released. Further, since the contact piece portions 36 and 36 are provided so as to be located on the opposite side of the light emitting body 10 in the emission direction, they are exposed to the front surface side to impair the appearance or are emitted from the light guide body 10. There is no such thing as disturbing the light. Therefore, it can be made relatively large in order to improve heat dissipation.

On each side of the wall portion 31 in the thickness direction, there are provided guide holding portions 34 and 35 for guiding the substrate 20 by the wall portion 31 and holding the substrate 20 so as to be sandwiched therebetween. The guide holding portions 34 and 35 and the wall portion 31 guide the substrate 20 that is slid and inserted along with the compression deformation of the heat transfer sheet 26, and hold the substrate 20 that is slid and inserted. In the present embodiment, guide holding portions 34 and 35 are provided for pressing and guiding both end portions of the substrate 20 in the longitudinal direction. In the illustrated example, a guide protrusion 34 that has a protrusion shape that holds the surface of the end portion on the LED 24 side of the substrate 20, and a guide wall portion 35 that has a wall shape that holds the surface of the end portion on the connector 25 side of the substrate 20, The guide holding part provided with is shown.

Further, in the present embodiment, the positioning wall portions 32 formed so as to rise along the thickness direction of the wall portion 31 on both sides of one end portion (front end portion in the illustrated example) of the wall portion 31 of the substrate case 30. , 32 are provided. As shown in FIG. 6B, each of the positioning wall portions 32 and 32 sandwiches the engaging protrusions 12 and 12 of the end portion 11 of the light guide body 10 with the engaging portions 23 and 23 provided on the substrate 20. It functions as a positioning piece for positioning. That is, as shown in FIG. 6B, the engagement protrusions 12 and 12 of the end portion 11 of the light guide 10 abut on the engagement portions 23 and 23 of the substrate 20 and the positioning wall portion 32 of the substrate case 30. Positioning is performed so as to be sandwiched between them.

Further, engaging convex portions 33, 33 formed so as to rise from the wall portion 31 along the thickness direction of the wall portion 31 so as to be connected to the positioning wall portions 32, 32 are the wall portion 31. It is provided on both sides in the thickness direction. The above-described guide protrusion 34 is provided so as to be connected to the tip end portion of the engaging protrusion 33 in the rising direction. The engagement convex portion 33 is formed so as to protrude from the positioning wall portion 32 toward the LED 24 side of the substrate 20 in a state in which the substrate case 30 is accommodated in the substrate case 30. It is set as the structure which adjoins thru | or contact | abuts to an edge part (a front edge part in the example of a figure). Moreover, this engagement convex part 33 is arrange | positioned so that it may be pinched | interposed between the engagement protrusion parts 12 and 12 of the edge part 11 of the light guide 10 formed in the forked shape, as shown to FIG. 6B.

In the present embodiment, the substrate case 30 configured as described above is formed symmetrically with respect to the wall portion 31 and is formed symmetrically about the center line in the thickness direction of the wall portion 31 as the symmetry axis. ing. As shown in FIG. 5, the substrate case 30 accommodates the substrate 20 so as to be slid into the substrate case 30. That is, the heat transfer sheet 26 is compressed and elastically brought into contact with the wall portion 31, and the both ends in the longitudinal direction of the substrate 20 are guided along the guide portion 34 and the guide so as to be along the wall portion 31. It is inserted between the wall part 35 and the wall part 31. The substrate 20 can be easily assembled to the substrate case 30 by bringing one side of the substrate 20 into contact with the contact piece 36. In the assembled state, the movement of the substrate 20 in the thickness direction is restricted by the wall portion 31 of the substrate case 30 and the guide holding portions 34 and 35. Further, the movement of the substrate 20 in the front-rear direction is restricted by the engagement convex portion 33 of the substrate case 30 and the rear end piece portion between the wall portion 31 and the guide wall portion 35.

According to the light-emitting block 1 having the above-described configuration, it is possible to increase the length while reducing the non-light-emitting region. That is, the substrates 20 and 20 can be arranged and held on both sides in the thickness direction of the wall portion 31 of the substrate case 30. That is, the two substrates 20 and 20 can be held by the single substrate case 30, the number of components can be reduced, and the long light-emitting block 1 can be realized with a relatively simple structure. In addition, the light guides 10 and 10 are disposed so that the incident surfaces 13 and 13 face the LEDs 24 and 24 of the substrates 20 and 20 held on both sides of the substrate case 30, respectively, thereby reducing a non-light emitting region. However, the length can be increased. That is, for example, compared to a substrate base or case that holds a substrate, or a lighting device itself is connected, the light exit surfaces 14 and 14 of the adjacent light guides 10 and 10 are connected to those. It is possible to make them close to each other in the longitudinal direction, and to reduce the non-light emitting region. Accordingly, the light-emitting block 1 is suitable as a light-emitting block 1 incorporated in a relatively long linear illumination device 3 as shown in FIGS. 1A and 1B.

Further, in the above-described example, the light guide 10 is provided with the incident surfaces 13 and 13 at both end portions 11 and 11 and the LEDs 24 and 24 are disposed so as to face the both incident surfaces 13 and 13 respectively. Therefore, by disposing the substrate 20 and the substrate case 30 on both sides of the plurality of light guides 10, the non-light emitting region can be reduced with a simple structure, and the length can be further increased. Moreover, compared with what makes the light of LED24 inject only from the one edge part in the longitudinal direction of the light guide 10, the light emission of the radiation | emission surface 14 in the far side in the longitudinal direction is insufficient, and the longitudinal direction of the radiation surface 14 is met. It is possible to suppress non-uniformity of light emission.

In the above example, since the heat transfer sheet 26 that can be compressed and deformed in the thickness direction of the substrate 20 is attached to the back surface 22 of the substrate 20, the heat transfer sheet 26 is connected to the back surface 22 of the substrate 20 and the substrate case. It functions as a spacer between 30 wall portions 31. Further, the substrate 20 and the wall portion 31 of the substrate case 30 can be brought into close contact with each other through the heat transfer sheet 26. Thereby, heat of electronic components such as the LED 24 and the connector 25 provided on the substrate 20 can be efficiently transferred to the substrate case 30 side to be radiated. Further, since the guide holding portions 34 and 35 are provided on each side of the substrate case 30, the substrate 20 can be easily assembled by sliding the substrate 20 into the substrate case 30. Further, since the substrate 20 and the heat transfer sheet 26 are pressed against the guide holding portions 34 and 35 and the wall portion 31 of the substrate case 30 by the restoring force of the heat transfer sheet 26 provided on the back surface 22 of the substrate 20, Dropout and the like can be suppressed.

Further, in the above-described example, the positioning wall portion 32 that positions the substrate case 30 so as to sandwich the engaging protrusions 12 and 12 of the end portion 11 of the light guide 10 by the engaging portions 23 and 23 of the substrate 20. Provided. Accordingly, the engaging portions 23 and 23 of the substrate 20 accommodated in the substrate case 30 and the positioning wall portions 32 of the substrate case 30 are positioned so as to sandwich the engaging protrusions 12 and 12 of the end portion 11 of the light guide 10. can do. In addition, the positioning of the substrate 20 is relatively ensured by the engagement protrusions 12 and 12 of the end portion 11 of the light guide 10 positioned in this way.

Further, in the above-described example, the engagement convex portion 33 disposed so as to be sandwiched between the bifurcated engagement projection portions 12 and 12 of the end portion 11 of the light guide 10 on the positioning wall portion 32 of the substrate case 30. Is provided. Therefore, the light guide 10 and the substrate 20 can be more reliably positioned with respect to the substrate case 30. That is, the engaging protrusions 12 and 12 of the end portion 11 of the light guide 10 are positioned by the positioning wall portion 32 of the substrate case 30 and the engaging portions 23 and 23 of the substrate 20, and the engaging protrusion 12. , 12 is reliably positioned by the engaging projection 33 disposed between the two. On the other hand, the substrate 20 is reliably positioned by the bifurcated engagement protrusions 12 and 12 positioned by the engagement protrusions 33 of the substrate case 30 and the engagement portions 23 and 23.

Furthermore, in the above-described example, the substrate case 30 has a structure in which the substrate 20 is slid and accommodated, and the engagement protrusion 33 is provided with the guide protrusion 34, so that the assembly of the substrate 20 is easy. However, it is possible to effectively prevent misalignment after the substrate 20 is assembled. That is, as shown in FIG. 6B, the engagement protrusions 12 and 12 of the light guide 10 positioned on both sides of the engagement portions 23 and 23 in the sliding direction of the substrate 20 function as retaining of the substrate 20. It is possible to effectively prevent misalignment and the like.

The substrate case 30 may be formed of a metal-based material such as aluminum from the viewpoint of improving heat dissipation, etc., like the substrate 20. Moreover, the thickness dimension of the wall part 31 of the substrate case 30 should just be a dimension which can hold | maintain the two board | substrates 20 and 20 on the both sides in the thickness direction, the intensity | strength of the said substrate case 30, and both the board | substrates 20 , 20 may be set to an appropriate size in consideration of the heat conductivity of the heat generated at 20. For example, the thickness of the wall 31 may be a relatively thin dimension of about 1 mm to 10 mm, or about 2 mm to 5 mm in order to reduce the non-light emitting region while ensuring strength and the like. In the embodiment, it is about 2.5 mm. Moreover, in each figure, the code | symbol 37 is a positioning protrusion inserted in the positioning hole of the insulation bush 54 provided in the main body casing 2 of the illuminating device 3 in which the said light emission block 1 is integrated (refer FIG. 6).

As shown in FIGS. 1B and 1C, the main body casing 2 is formed in a long shape on the left and right, and as shown in FIGS. 3A and 3B, the main body casing 2 is fixed to a wall unit 6 as an installation target of the lighting device 3. The case part 50 and the surface side case part 40 are provided. A housing space for the plurality of light emitting blocks 1 is formed by the surface side case portion 40 and the fixed case portion 50. In the present embodiment, the surface side case portion 40 and the fixed case portion 50 are made of a metal such as aluminum from the viewpoint of effectively dissipating heat from each substrate 20 and the strength. By making the surface side cover part 40 and the fixed case part 50 made of metal, heat from each board 20 on which electronic components such as the LED 24 and the connector 25 provided in association with it are effectively dissipated. Can do. Further, the surface side case portion 40 and the fixed case portion 50 have the same cross section along the longitudinal direction of the main casing 2 and are formed by extrusion molding or the like.

The front surface side case portion 40 is disposed so as to cover the light exit surface 14 side of the light guide 10 of each light emitting block 1, and has a substantially C-shaped or U-shaped cross section that opens upward in FIGS. 3A and 3B. Has been. The front side case portion 40 is provided with an opening 43 through which light from the light exit surface 14 of the light guide 10 of each light emitting block 1 passes (see FIG. 3B). By providing such an opening 43, light emitted from the emission surface 14 of each light guide 10 can be passed through the opening 43 while the front side case 40 is made of metal. In the present embodiment, the lower side surface portion 41 of the front surface side case portion 40 (specifically, the groove bottom surface portion of the cover concave groove 42 formed over the entire length in the longitudinal direction of the front surface side case portion 40 and opening downward). ) Shows an example in which an opening 43 is provided. Engagement grooves 42a and 42a that open in the direction facing each other are provided at the front and rear (depth direction) corners of the groove bottom of the cover groove 42, respectively.

The opening 43 corresponds to the front / rear position (depth direction) of the light exit surface 14 of each light guide 10 accommodated in the main casing 2, and is substantially the central portion in the front / rear direction (depth direction) of the front side case part 40. Is provided. In addition, the front-rear dimension (depth dimension) of the opening 43 is formed larger than the front-rear dimension (depth dimension) of the emission surface 14 so as to allow light from the emission surface 14 of the light guide 10 to pass through effectively. . Further, in the present embodiment, the opening 43 has a surface formed by a plurality of cover pieces (44,...) Covering the portions of the substrates 20 and 20 disposed between the light guides 10, as shown in FIGS. 1A and 1C. It consists of a plurality (four in the illustrated example) of openings (43,...) Partitioned into a plurality in the longitudinal direction of the side case portion 40.

The cover piece 44 includes the wall portion 31 of the substrate case 30, the substrates 20 and 20 held on both sides thereof, and the end portions of the light guides 10 and 10 disposed so that the end portions 11 and 11 face each other. 11 engaging projections 12 and 12 and the surface side (lower side) of the lens-like portion are formed. As described above, in this embodiment, since the substrates 20 and 20 are arranged and held on both sides in the thickness direction of the wall portion 31 of the substrate case 30, the left and right dimensions (width dimensions) of the cover piece 44 are set. Can be relatively small. That is, the adjacent openings 43 and 43 are compared with each other so as to effectively pass the light from the emission surfaces 14 and 14 of the light guides 10 and 10 that are close to each other in the longitudinal direction as described above. Close to each other. By providing such a cover piece 44, the substrate case 30, the substrate 20, the engaging protrusions 12 and 12 of the end portion 11 of the light guide 10, and the lens-like portion can be made inconspicuous.

Further, in this embodiment, a surface cover 48 having translucency covering the opening 43 is provided. As shown in FIG. 1A, the front cover 48 is formed in an elongated shape along the longitudinal direction of the front side case portion 40. In the present embodiment, all of the plurality of openings 43 partitioned as described above are configured to be covered with a single surface cover 48. As shown in FIGS. 3A and 3B, the front cover 48 has a cover concave groove 42 so that the surface (lower surface) thereof is substantially flush with the surface (lower surface) of the lower side surface portion 41 of the surface side case portion 40. It is attached so that it may be fitted in. As shown in FIGS. 3A and 3B, engagement protrusions 48 a and 48 a that engage with the engagement grooves 42 a and 42 a of the cover groove 42 are formed on the front and rear (depth direction) upper edge portions of the surface cover 48. Is formed so as to protrude in the front-rear direction (depth direction) of the front cover 48. In the present embodiment, the surface cover 48 is made of a relatively soft synthetic resin for the portions of the engaging protrusions 48a, 48a by two-color molding (different material molding) or the like, It is made of a relatively hard and translucent synthetic resin.

By providing such a surface cover 48, it is possible to suppress entry of dust, moisture, and the like into the main body casing 2 through the opening 43, and it is possible to protect each member in the main body casing 2. it can. Moreover, since it is set as the structure which covers the surface side of the some opening part 43 with the single surface cover 48, each cover piece 44 becomes inconspicuous and can improve appearance. Moreover, compared with the case where the cover which covers each of the some opening part 43 is provided, generation | occurrence | production of a joint and a clearance gap can be suppressed, and invasion of dust, moisture, etc. in the main body casing 2 can be suppressed more effectively. it can. Furthermore, in the above-described example, the surface of the front cover 48 and the surface (lower surface) of the lower side surface portion 41 of the surface side case portion 40 are substantially flush with each other, so that a step or the like is formed between them. It can improve the appearance.

Furthermore, since the engaging portions 42a and 42a and the engaging portions 48a and 48a that are engaged with each other are provided on the surface side case portion 40 and the surface cover 48, as shown in FIG. 6B, these engaging portions 42a. , 42a and the engagement 48a, 48a with each other, the surface cover 48 can be easily assembled to the surface side case portion 40. In the above-described example, the engaging protrusions 48a and 48a as the engaging portions of the surface cover 48 are made soft, so that when the surface cover 48 is attached to the cover concave groove 42 of the surface side case portion 40, it is relatively It can be installed smoothly. Further, these engagement protrusions 48a and 48a are fitted with elastic deformation in the engagement grooves 42a and 42a as the engagement portions of the cover groove 42, and are closely attached to the inner surface of the cover groove 42. The engaging protrusions 48a and 48a function as seal members. Therefore, intrusion of dust, moisture and the like into the main body casing 2 can be more effectively suppressed.

The surface cover 48 may be made of a translucent or transparent resin material such as acrylic resin or polycarbonate resin. Further, at least the portions other than the engaging protrusions 48a, 48a may be light-transmitting, and may be colored milky white or the like. In addition, a diffusion pattern, a light collection pattern, or the like may be provided on the surface cover 48 according to a desired light distribution pattern.

Further, in the present embodiment, as shown in FIG. 1A, end openings 43A and 43A are provided in the vicinity of both ends in the longitudinal direction of the groove bottom surface portion of the cover concave groove 42 of the surface side case portion 40, and the end portions End covers 48A and 48A are provided to cover the portions where the openings 43A and 43A are provided, respectively. The end openings 43A and 43A are provided with a power cord and the like wired through wiring holes 51a and 51a provided in the vicinity of both end portions in the longitudinal direction of the fixed case portion 50, which will be described later, and the lighting device 3 It may be provided at a site where a power cord or the like is connected and used for connection or maintenance. The end covers 48A, 48A have substantially the same cross-sectional shape as the surface cover 48 described above, and engaging protrusions (not shown) engage with the engaging grooves 42a, 42a of the cover groove 42, It is attached to the surface side case portion 40 so as to be fitted into the cover concave groove 42. The end covers 48A and 48A may be made of a metal or a synthetic resin that does not have translucency. Moreover, you may make it provide the operation part etc. for ON / OFF of the said illuminating device 3, light control, etc. in the said location, without providing one end cover 48A. Moreover, you may make it provide such an operation part in another site | part.

Further, as shown in FIGS. 3A and 3B, one side portion of the wall portion 31 of the substrate case 30 (in the illustrated example, the lower side) Part) and the other side part of the substrate 20 are adhered or elastically contacted with a heat transfer sheet 47 (see also FIG. 6B). The heat transfer sheet 47 is affixed to the inner surface of the surface side case portion 40 where the cover piece 44 is provided. In the illustrated example, the heat transfer sheet 47 is attached to the lower side surface portion 41 and the surface side case portion 40. The example which stuck across a part of inner surface of the front side part of this is shown. By providing such a heat transfer sheet 47, the heat of the substrate 20 is effectively transferred to the surface side case portion 40 side made of metal through the wall portion 31 and the heat transfer sheet 47, and is radiated. be able to.

Further, the front surface side case portion 40 is provided with (first) engagement portions 45 and 46 that engage with (second) engagement portions 55 and 56 provided on the fixed case portion 50 described later. . In this embodiment, the example which provided the engaging parts 45 and 46 in the upper end part of the both-sides surface part of the front and back (depth direction) of the surface side case part 40 is shown, respectively. The front side surface portion of the front side case portion 40 is formed to be inclined obliquely upward from the front edge of the lower side surface portion 41, and has a front engagement portion 45 at the upper end portion thereof. In the present embodiment, the front engagement portion 45 protrudes toward the rear side at a locking claw 45a formed to protrude toward the rear side, and at a spaced position on the lower side of the locking claw 45a. And a locking rib 45b formed as described above. The rear side surface portion of the surface side case portion 40 is formed to rise upward from the rear end edge portion of the lower side surface portion 41, and has a rear engagement portion 46 at the upper end portion thereof. In this embodiment, the rear engagement portion 46 projects toward the front side at a locking claw 46a formed so as to protrude toward the front side, and at a spaced position on the lower side of the locking claw 46a. And a locking rib 46b formed to do so.

Moreover, in this embodiment, as shown in FIG. 3C, notches 41a and 41a (only one of them is shown in FIG. 3C) at both ends in the longitudinal direction of the groove bottom surface portion of the cover concave groove 42 of the front side case portion 40. Is provided. The notches 41a are provided at portions corresponding to the stopper holes 52 provided at both ends in the longitudinal direction of the fixed case portion 50 to be described later. As shown in FIGS. 1A, 2A, and 3C, both end portions in the longitudinal direction of the surface-side case portion 40 are inclined surfaces that are inclined from the lower side toward the diagonally upper outer side. Moreover, as shown to FIG. 1A and 3C, the end cap 49 is attached to the both ends in the longitudinal direction of this surface side case part 40, and the opening is sealed. The locking rib 45b of the front side engaging portion 45 of the front side case portion 40 is formed with a notch 45c for locking a locking claw or the like provided inside the end cap 49 so that the end cap 49 can be attached and detached. It is freely attached to the surface side case portion 40.

The fixed case portion 50 is disposed so as to cover the reflective surface (15,...) Side of the light guide (10,...) Of the light emitting block (1,...). The fixed case portion 50 has a cross section having an upper side surface portion 51 to which each substrate case 30 is attached, and a rear side surface portion formed so as to hang downward from the rear end edge portion of the upper side surface portion 51. It is substantially L-shaped. As shown in FIGS. 3A and 3B, the rear side surface portion of the fixed case portion 50 is disposed inside the front surface side case portion 40 along the rear side surface portion of the front surface side case portion 40. In addition, the front end edge portion and the rear end edge portion of the upper side surface portion 51 of the fixed case portion 50 are provided with contact ribs that protrude upward and come into contact with the installation target 6. The upper side surface portion 51 forms a space opened upward. In this space, as shown in FIG. 3A, spacers 59 that are in contact with or elastically contact the outer surface (upper surface) of the upper side surface portion 51 and the installation object 6 are disposed at appropriate positions.

A plurality of through holes are provided in the front side portion of the upper side surface portion 51 of the fixed case portion 50 at intervals along the longitudinal direction of the fixed case portion 50. The through holes are provided with positioning holes. An insulating bushing 54 having the above is fitted (see FIGS. 3A and 6). These insulating bushes 54 are provided corresponding to the positions where the substrate case 30 is disposed, and the positioning protrusions 37 of the substrate case 30 are inserted into the positioning holes. Further, on the inner side surface (lower surface) of the upper side surface portion 51 of the fixed case portion 50, as shown in FIGS. 3A and 3B, the contact piece portions 36 and 36 of the substrate case 30 and the other side portion of the wall portion 31 (see FIG. In the example, a heat transfer sheet 57 that is in contact with or elastically contacts the upper side) is attached (see also FIGS. 6A and 6B). As shown in FIG. 1C, the heat transfer sheet 57 is attached to an installation location of the substrate case 30 on the inner side surface of the upper side surface portion 51 of the fixed case portion 50. The heat transfer sheet 57 is sized such that at least the entire contact piece portions 36 and 36 of the substrate case 30 and the other side portion of the wall portion 31 are in contact with each other or elastically in contact with each other.

By providing such a heat transfer sheet 57, the heat of the substrate 20 is effectively transferred to the fixed case portion 50 side made of metal through the substrate case 30 and the heat transfer sheet 57, and is radiated. be able to. Further, in this embodiment, since the contact piece portions 36, 36 are provided in each substrate case 30, the contact area with respect to the heat transfer sheet 57 can be increased, and the heat of each substrate 20 can be more effectively reduced. Heat can be transferred to the fixed case 50 side to dissipate heat. Further, an adhesive material and release paper are provided on the surface side (substrate case 30 side) of the heat transfer sheet 57. The release paper of the heat transfer sheet 57 is peeled off, and the substrate case 30 is positioned by inserting the positioning protrusion 37 of the substrate case 30 into the positioning hole of the insulating bush 54 of the fixed case portion 50 as shown in FIGS. 6A and 6B. The substrate case 30 can be easily assembled to the fixed case portion 50. Note that a reflection sheet made of a resin sheet, a metal sheet, or the like may be disposed on a portion of the inner side surface of the upper side surface portion 51 of the fixed case portion 50 facing the reflection surface 15 of the light guide 10.

Also, the fixed case portion 50 is provided with engagement portions 55 and 56 that engage with the front side engagement portion 45 and the rear side engagement portion 46 of the front side case portion 40. In the present embodiment, the front-side engagement portion 55 and the rear-side engagement are arranged in front of and behind the upper side surface portion 51 of the fixed case portion 50 so as to correspond to the front-side engagement portion 45 and the rear-side engagement portion 46 of the front-side case portion 40, respectively. The example which provided the joint part 56 is shown. The front side engaging portion 55 of the fixed case portion 50 is formed so as to protrude on the opposite side, that is, on the lower side of the contact rib of the front end edge portion, and is formed so as to protrude toward the front side. It has a locking claw 55a. The rear engagement portion 56 of the fixed case portion 50 is a base end portion of the abutment rib of the rear end edge portion described above, and has a locking claw 56a formed so as to protrude rearward. Yes. The front and rear engaging portions 55 and 56 of the fixed case portion 50 are provided so as to be positioned inside the front and rear engaging portions 45 and 46 of the front side case portion 40. That is, as shown in FIGS. 3A and 3B, the front side case 40 and the fixed case 50 are assembled so that the front case 40 includes the fixed case 50 and covers the fixed case 50. Thereby, in the state which installed the said illuminating device 3, the fixed case part 50 becomes inconspicuous and it can improve appearance.

In a state where the surface side case portion 40 and the fixed case portion 50 are assembled, the front and rear engaging portions 55 and 56 of the fixed case portion 50 located inside the front and rear engaging portions 45 and 46 of the surface side case portion 40 are used. The movement in the front-rear direction is restricted. Further, the front engaging portion 55 of the fixed case portion 50 has its engaging claw 55 a engaged with the engaging claw 45 a of the front engaging portion 45 of the front side case portion 40, and in the protruding direction of the front engaging portion 55. The front end portion comes into contact with the locking rib 45 b of the front side engaging portion 45 of the front side case portion 40. Further, the rear engaging portion 56 of the fixed case portion 50 has its engaging claw 56 a engaged with the engaging claw 46 a of the rear engaging portion 46 of the front side case portion 40 and the rear side engaging portion 56. It abuts on the locking rib 46 b of the side engaging portion 46. Thereby, the movement to the up-down direction of the surface side case part 40 and the fixed case part 50 is controlled. The shapes of the engaging portions of the surface side case portion 40 and the fixed case portion 50 are not limited to those shown in the drawings, and the surface side case portion 40 and the fixed case portion 50 are assembled by engaging each other. Any structure can be used as long as the structure is obtained.

As described above, in the present embodiment, the main body casing 2 that accommodates the plurality of light emitting blocks (1,...) Is composed of the front side case portion 40 and the fixed case portion 50. Work can be done easily. Further, in the above-described example, the front side case portion 40 and the fixed case portion 50 have the engaging portions 45 and 46 and the engaging portions 55 and 56 that are engaged with each other, and these engaging portions are engaged. It has a structure that can be assembled. Therefore, the assembling work of the main casing 2 can be easily performed. In addition, if it is set as the structure which engages the engaging parts 45 and 46 of the surface side case part 40, and the engaging parts 55 and 56 of the fixed case part 50 so that attachment or detachment is possible, the surface side case part 40 will be detached. Thus, maintenance, replacement work, and the like of each light emitting block 1 can be easily performed.

At both ends in the longitudinal direction of the upper side surface portion 51 of the fixed case portion 50, as shown in FIG. 1B, a fixed stopper 7 such as a screw used when the lighting device 3 is attached to the installation target 6 (see FIG. 3A). ) Are inserted (see also FIG. 3C). In the present embodiment, the engagement holes 53 are provided at appropriate positions in the middle of the upper side surface portion 51 of the fixed case portion 50 in the longitudinal direction. The engagement holes 53 are formed in a slit shape on the left and right, and as shown in FIGS. 1C and 3B, the engagement holes 53 are a pair of engagement holes 53 and 53 that are provided apart from each other in the front-rear direction. An intermediate fixing bracket 58 for fixing an intermediate portion in the longitudinal direction of the lighting device 3 to the installation target 6 is engaged with the engagement holes 53 and 53.

As shown in FIG. 3B, the intermediate fixing bracket 58 is a pair of engaging pieces formed so as to hang down from a fixing piece portion fixed to the installation object 6 and front and rear (depth direction) edges of the fixing piece portion. It is made into the substantially C-shaped thru | or U-shaped cross section opened by the one part at the lower side of illustration. The fixing piece portion is provided with a stopper hole 58b through which the fixing stopper 7 such as a screw is inserted. Locking claws 58a and 58a are respectively provided at the distal ends of the pair of engaging pieces. In the intermediate fixing bracket 58, a pair of engaging pieces are inserted into the pair of engaging holes 53, 53 of the fixing case portion 50, respectively, and locking claws 58 a, 58 a at the tip portions thereof are provided in the fixing case portion 50. It is set as the structure latched to the engagement step part.

The engaging hole 53 with which the intermediate fixing bracket 58 is engaged supports the intermediate portion of the lighting device 3 in the longitudinal direction by the intermediate fixing bracket 58 according to the length dimension, mass, and the like of the lighting device 3. You may make it provide in the site | part which needs to be made. In the illustrated example, an example is shown in which a pair of engagement holes 53 and 53 are provided at two locations with a space in the middle in the longitudinal direction of the fixed case portion 50 (see FIG. 1B). Further, the engagement hole 53 and the intermediate fixing bracket 58 may not be provided. In this case, if necessary, an insertion hole or the like of a fixed stopper is provided in the middle portion of the fixed case portion 50 in the longitudinal direction, and the middle portion of the lighting device 3 in the longitudinal direction is installed by the fixed stopper 6. You may make it fix to.

The lighting device 3 having the above-described configuration may be assembled and installed on the installation target 6 as follows, for example. First, as shown in FIG. 5, the substrate 20 is held on the substrate case 30. In the illustrated example, eight substrates 20 having LEDs 24 and 24 arranged so as to face both end portions 11 and 11 of four light guides 10 are accommodated and held in five identical substrate cases 30. An example is shown (see FIG. 1B). That is, the substrates 20 and 20 are respectively held on the inner sides of the wall portions 31 and 31 of the substrate cases 30 and 30 disposed on both end sides in the longitudinal direction of the lighting device 3, and the remaining substrate cases 30. The example which hold | maintained the board | substrates 20 and 20 on the both sides of the wall part 31 is shown (refer FIG. 1B).

Next, as described above, the substrate case 30 holding the substrates 20 and 20 is attached to the fixed case portion 50 (see FIGS. 6A and 6B). Then, the light guide 10 may be assembled to the substrate case 30. That is, the light guide 10 is assembled so as to be bent with respect to the substrate cases 30 and 30 accommodating the substrates 20 and 20 disposed on both sides in the longitudinal direction of the light guide 10. At this time, the engaging protrusions 33 of the substrate case 30 are received in the space between the engaging protrusions 12 and 12 of the end portion 11 of the light guide 10, and these are positioned on the positioning wall of the substrate case 30. It can be assembled while being easily positioned so as to be inserted between the portion 32 and the engaging portions 23, 23 of the substrate 20. Alternatively, after the substrate cases 30 and 30 accommodating the substrates 20 and 20 are assembled to both ends in the longitudinal direction of the light guide 10, the substrate cases 30 and 30 may be attached to the fixed case portion 50. Good.

In this assembled state, as shown in FIGS. 1A and 1C, the light incident surface 13 of the light guide 10 is disposed so as to face the LED 24 provided on the substrate 20 without being misaligned. Moreover, it arrange | positions so that the optical axis of LED24 of each board | substrate 20 may become a substantially identical linear shape, and it will be in the state by which the some light guide 10 was arrange | positioned so that it might be in series in between. In this state, as shown in FIG. 6B, a space is formed between the substrate case 30 and the rear side portion of the fixed case portion 50, and this space can be used as a through-wire portion.

Further, as shown in FIG. 6B, a surface cover 48 is attached to the surface side case portion 40. Further, the engaging portions 45 and 46 of the front surface side case portion 40 and the engaging portions 55 and 56 of the fixed case portion 50 are engaged, and the front surface side case portion 40 and the fixed case portion 50 are assembled. In this state, the wall portion 31 of the substrate case 30 attached to the fixed case portion 50 and the lower side portion of the substrate 20 held by this contact the heat transfer sheet 47 provided on the inner side surface of the surface side case portion 40. The substrate 20 and the substrate case 30 are restricted from moving in contact or elastically.

Then, the intermediate fixing bracket 58 is fixed to the portion corresponding to the engagement holes 53 of the fixing case portion 50 of the installation target 6 by the fixing stopper 7, and the fixing case portion 50 is locked to the intermediate fixing bracket 58. The lighting device 3 is fixed (see FIG. 3B). Moreover, the both ends in the longitudinal direction of the lighting device 3 are fixed to the installation object 6 by the fixing stoppers 7 and 7 through the stopper holes 52 and 52 at both ends in the longitudinal direction of the fixed case portion 50 (see FIG. 3A). ). The fixing work of the fixed stopper 7 through the stopper hole 52 may be performed through a notch 41 a provided at an end portion in the longitudinal direction of the surface side case section 40. Next, the end cover 48A is attached to the surface side case portion 40, and the end caps 49, 49 are attached to both ends in the longitudinal direction of the surface side case portion 40 (see FIGS. 1A and 3C). The end cover 48A may be integrally provided on at least one of the end caps 49, 49. The above-described procedure for assembling the lighting device 3 and the procedure for fixing it to the installation target 6 are examples, and may be performed by other procedures.

According to the illuminating device 3 according to the present embodiment having the above-described configuration, it is possible to increase the length with a simple structure and to reduce the size of the short cross section. That is, since the plurality of light guides 10 are arranged and accommodated in the main casing 2 so that their longitudinal directions are arranged (aligned) in series, the length of the light guide 10 can be increased with a simple structure. In addition, the short cross section can be reduced in size. That is, the illumination device 3 having a long light emission range can be realized with a simple structure by a plurality of light guides 10 each having a longitudinal direction arranged in series. In addition, since the LEDs 24 and 24 are disposed so as to face the incident surfaces 13 and 13 of the light guide body 10, respectively, the reflector of the light emitting element protrudes greatly on the emission direction side of the illumination device 3 itself. Therefore, it is possible to reduce the size of the short cross section.

Further, in consideration of the light guide loss due to the light guide 10, the light emission amount of the emission surface 14 on the far side from the LED 24, the light amount of the light emitting element itself such as the LED 24, etc., the light guide body 10 having the same length dimension. The light emitting block 1 having the above can be modularized and employed. According to this, it is relatively easy for various installation targets by setting the number of the light emitting blocks 1 accommodated according to the length dimension of the installation target and the length dimension of the main casing 2 according to the number. It can correspond to. For example, when the installation target is the wall unit 6 as shown in the figure, the size of the frontage of the kitchen (that is, the size of the frontage of the wall unit 6) varies depending on the combination of the hanging cabinets constituting the wall unit 6. There are many. Even in such a case, the illumination device 3 can be easily made to correspond to the length according to the frontage dimension of the wall unit 6.

Note that the installation target of the lighting device 3 is not limited to the wall unit 6, and a rising part at the rear end of the top plate of the floor unit 5, a trolley part of the floor unit 5, or the like may be set as the installation target. Further, the installation target of the lighting device 3 is not limited to the kitchen device 4, and other storage furniture, a handrail, a staircase, or the like may be set as the installation target, or a ceiling or a wall surface in a building may be set as the installation target. According to the illuminating device 3, the short cross section can be reduced in size and lengthened as described above, so that it can be installed on various installation targets.

Further, in the above-described example, the substrates 20 and 20 are respectively disposed at both end portions 11 and 11 of the plurality of light guides (10,...), And the substrate case 30 that holds the substrates 20 and 20 is the same. However, the present invention is not limited to such an embodiment. For example, as the substrate case for holding the substrates 20 disposed on both ends in the longitudinal direction of the lighting device 3, a substrate case having a structure that can hold the substrate only on one side only for the end portion is adopted. It may be. Furthermore, in the above-described example, the lighting device 3 in which the four light guides 10 are disposed in the main body casing 2 is illustrated, but the present invention is not limited to such an aspect, and the number of the light guides 3 is three or less or five or more. The light guide body 10 may be arranged in the main casing 2. Moreover, each outer side edge part of the light guide arrange | positioned among the multiple light guides 10 at the both ends in the longitudinal direction of illuminating device 3 itself may not be an entrance plane. In this case, the outer side end may be supported by the main body casing or the like. Further, in this case, the engaging portion 12 of the light guide may be provided only at the end portion (inward side end portion) 11 provided with the incident surface 13.

Furthermore, in the above-described example, a plurality of openings (43,...) Are provided in the surface side case portion 40 of the main casing 2 and the plurality of openings (43,...) Are covered with a single surface cover 48. Although an example of a structure is shown, a surface cover that covers each opening 43 may be provided. Furthermore, such a surface cover may not be provided. Alternatively, the front side case portion 40 itself may have translucency and no opening may be provided.

In the above-described example, the front side case portion 40 and the fixed case portion 50 of the main casing 2 are provided with the first engagement portion and the second engagement portion that engage with each other, and the first engagement portion and the first engagement portion Although the example made into the structure which can assemble | attach the surface side case part 40 and the fixed case part 50 by engaging 2 engaging parts is shown, it is not restricted to this. For example, the surface side case portion 40 and the fixed case portion 50 may be assembled with a fixing stopper such as a screw. Furthermore, in the above example, the main body casing 2 is shown as an example in which the main body casing 2 is composed of the front side case portion 40 and the fixed case portion 50. However, the main body casing 2 may be formed into a cylindrical shape integrally formed. .

In the above example, an example in which a single LED 24 is mounted on the surface 21 side of the substrate 20 is shown, but a plurality of LEDs may be provided on the surface 21 side of the substrate 20. Further, the light emitting element is not limited to the LED 24, and other semiconductor light emitting elements or other light emitting elements may be adopted. Furthermore, in the above-described example, the example in which the engagement portions 23 and 23 and the engagement portions 12 and 12 that engage with each other are provided on the substrate 20 and the light guide 10 is shown. May not be provided.

In the above example, the board case 30 is provided with the positioning wall portion 32 as the positioning piece portion, the engaging convex portion 33, the guide holding portions 34 and 35, the contact piece portion 36, the positioning projection 37, and the like. Although shown, all or some of them may not be provided. For example, instead of providing the guide holding portions 34 and 35, the substrates 20 and 20 may be held on both sides of the wall portion 31 by an adhesive or an adhesive material. Alternatively, a through hole for a fastener such as a bolt is provided in the wall portion 31 of the substrate 20 and the substrate base (substrate case 30), and the substrates 20 and 20 disposed on both sides of the wall portion 31 are fastened by bolts and nuts, It is good also as an aspect made to hold | maintain to the part 31. FIG.

In the above-described example, the substrate case 30 disposed between the plurality of light guides 10 has the wall portion 31 disposed so that the back surface 22 of the substrate 20 faces each side in the thickness direction. Although the example which made it is shown, it is not restricted to such an aspect. For example, a substrate case that accommodates and holds the substrates 20 and 20 disposed so as to face the incident surfaces 13 and 13 of the adjacent light guides 10 and 10 is provided between the plurality of light guides 10. Also good. In addition, a plurality of light-emitting blocks each having a light-guiding body in which the incident surface 13 is provided only at one end portion 11 in the longitudinal direction of the self and a light-emitting element disposed so as to face the incident surface It is good also as a thing provided.

While the invention has been described in terms of several preferred embodiments, various modifications and variations can be made by those skilled in the art without departing from the true spirit and scope of the invention, ie, the claims.

Claims (12)

1. A plurality of light-emitting blocks each including a rod-shaped light guide and a light-emitting unit, and a main body casing that accommodates the plurality of light-emitting blocks,
   The light guide includes an incident surface facing the light emitting unit, and an output surface for emitting light of the light emitting unit from the incident surface, and the incident surface is one in the longitudinal direction of the light guide. Provided at an end of the light guide, and the exit surface is provided at a side surface intersecting the longitudinal direction of the light guide.
   The plurality of light emitting blocks are accommodated in the main casing so that the longitudinal directions of the light guides are arranged in series.
2. The light emitting unit includes two light emitting elements,
   The light guide includes two incident surfaces respectively provided at both ends in the longitudinal direction of the light guide,
   The lighting device according to claim 1, wherein the two light emitting elements of the light emitting unit are arranged so as to face two incident surfaces of the light guide, respectively.
3. The main body casing is formed so as to cover a surface side case portion formed so as to cover an output surface side of the light guide body of the plurality of light emitting blocks, and an opposite side of the output surface of the light guide body. And a fixed case portion fixed to
   The surface side case portion and the fixed case portion respectively include a first engagement portion and a second engagement portion for engaging with each other, and the first engagement portion and the second engagement portion engage with each other. The lighting device according to claim 1, wherein the lighting device is assembled.
4. The main body casing is formed so as to cover a surface side case portion formed so as to cover an output surface side of the light guide body of the plurality of light emitting blocks, and an opposite side of the output surface of the light guide body. And a fixed case portion fixed to
   The surface side case portion and the fixed case portion respectively include a first engagement portion and a second engagement portion for engaging with each other, and the first engagement portion and the second engagement portion engage with each other. The lighting device according to claim 2, wherein the lighting device is assembled.
5. The surface side case portion is made of metal,
   The lighting device according to claim 3, wherein the front-side case portion includes an opening for allowing light from an emission surface of the light guide body of the plurality of light-emitting blocks to pass therethrough.
6. The surface side case portion is made of metal,
   The lighting device according to claim 4, wherein the front-side case portion includes an opening for allowing light from an emission surface of the light guide body of the plurality of light-emitting blocks to pass therethrough.
7. Each of the plurality of light emitting blocks includes a substrate on which its own light emitting unit is mounted,
   The surface side case portion includes a plurality of cover pieces that respectively cover the substrates of the plurality of light emitting blocks,
   The lighting device according to claim 5, wherein the opening is divided into a plurality of openings in the longitudinal direction of the surface-side case by the plurality of cover pieces.
8. Each of the plurality of light emitting blocks includes a substrate on which two light emitting elements of its own light emitting unit are respectively mounted.
   The surface side case portion includes a plurality of cover pieces that respectively cover the substrates of the plurality of light emitting blocks,
   The lighting device according to claim 6, wherein the opening is divided into a plurality of openings in the longitudinal direction of the surface-side case by the plurality of cover pieces.
9. 6. The lighting device according to claim 5, wherein the surface side case portion includes a surface cover having translucency covering the opening.
10. The lighting device according to claim 6, wherein the surface side case portion includes a translucent surface cover that covers the opening.
11. The illuminating device according to claim 7, wherein the surface side case portion includes a translucent surface cover that covers the plurality of openings.
12. The lighting device according to claim 8, wherein the front case portion includes a translucent surface cover that covers the plurality of openings.

Images