JP5975442B2 - Light emitting device - Google Patents

Description

  The present invention relates to a light emitting device including a long light guide.

Conventionally, a so-called edge light that guides light incident from the incident surface at one end in the longitudinal direction of a long light guide along the longitudinal direction and emits it from the exit surface of one side surface along the longitudinal direction. A type of light emitting device is known.
For example, the following Patent Document 1 discloses an illumination unit that is provided along a longitudinal direction of an upper end portion of a wall panel body and includes a rod-shaped light guide for irradiating light upward or obliquely upward. Has been. The illumination unit is configured to include a light source disposed opposite to a light incident surface on one end surface in the longitudinal direction of the light guide, and a case portion that accommodates the light guide and the light source.

JP 2010-129476 A

  However, an illumination unit including such a light guide has a complicated light guide and a case part that accommodates the light guide, and the assembly and management of components including these are complicated. There was a problem of becoming.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a light-emitting device that can improve handling at the time of assembly and management.

In order to achieve the above object, a light-emitting device according to the present invention has a light source and an incident surface portion for allowing light from the light source to enter at one end in the longitudinal direction, and an emission surface portion for emitting light from the incident surface portion. A light guide portion provided on one side surface portion along the longitudinal direction, a case portion for housing the light guide portion, and a translucent cover portion provided on the emission direction front side of the emission surface portion of the light guide portion; The light guide part and the case part are provided with a space between the reflection surface parts on both sides along the longitudinal direction intersecting the emission surface part of the light guide part and the inner surface of the case part. The light guide part and the cover part are integrally formed via a light diffusion part on the opposite side of the emission surface part, and the light guide part and the cover part are both edges on the reflection surface part side of the emission surface part. Are connected to form a gap between the cover and the light exit surface between the two edges. Characterized in that it is integrally formed as.

In the present invention, the case section, the thickness direction one surface and a planar mounting surface and the elongated substantially strip-shaped and accommodates the light guide portion so as to emit from the thickness direction other side It is good also as a structure.
In the present invention, the light source may be incorporated, and an end cap attached to at least one end portion in the longitudinal direction of the case portion may be provided.

  Since the light emitting device according to the present invention is configured as described above, it is possible to improve the handleability during assembly and management.

FIG. 4 is a schematic longitudinal sectional view schematically showing an example of a light emitting device according to an embodiment of the present invention and an installation structure of the light emitting device, and corresponding to an XX line arrow in FIG. 3. (A), (b) is a partially broken schematic exploded perspective view corresponding to the Y part in FIG. It is a schematic perspective view which shows the light-emitting device typically.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 are diagrams schematically illustrating an example of a light emitting device according to the present embodiment and an example of an installation structure of the light emitting device.
In some of the drawings, some of the detailed reference numerals attached to other drawings are omitted.
In the following embodiments, directions such as up and down directions will be described in principle with reference to the state where the light emitting device is installed.

As shown in FIGS. 1 and 2, the light emitting device 1 according to this embodiment has a light source 29 and a long light guide having an incident surface portion 21 on which light from the light source 29 is incident at one end in the longitudinal direction. Part 20 and case part 10 which accommodates this light guide part 20 are provided. In the light guide unit 20, one side surface portion along the longitudinal direction is an emission surface portion 22 that emits light from the incident surface portion 21, and the side surface portions on both sides along the longitudinal direction intersecting the emission surface portion 22 are reflection surface portions 24 and 24. It is said that.
Further, the light guide unit 20 and the case unit 10 are opposite to the emission surface unit 22 so as to provide a space between the reflection surface units 24 and 24 on both sides of the light guide unit 20 and the inner surfaces 17 and 17 of the case unit 10. The light diffusing portions 18a are connected and formed integrally.
Moreover, in this embodiment, as shown in FIG. 1, the translucent cover part 25 is provided in the output direction front side of the output surface part 22 of the light guide part 20. As shown in FIG. In the present embodiment, the light guide unit 20 and the cover unit 25 are integrally formed. Moreover, in this embodiment, the cover part 25 and the case part 10 shall be formed integrally. That is, in the present embodiment, the light guide unit 20 and the cover unit 25 are integrally formed in the case unit 10.

In this embodiment, the case portion 10 is formed into a long and substantially strip-shaped plate having one surface in the thickness direction as a flat mounting surface 13, and the light guide portion 20 is disposed so as to be emitted from the other surface side in the thickness direction. Contained structure. Further, the case portion 10 has one end surface in the width direction as a flat contact surface 11 that is substantially orthogonal to the mounting surface 13, and a width direction one side portion (a contact surface 11 side portion) of the other surface in the thickness direction. The flat portion 14 is substantially parallel to the mounting surface 13. In addition, the case portion 10 is an inclined surface portion formed so that the width direction other side portion of the other surface in the thickness direction is inclined to the side opposite to the mounting surface as it goes from the continuous portion with the flat portion 14 toward the other end in the width direction. It is set to 15.
That is, in the present embodiment, the case portion 10 gradually changes the thickness dimension from the connecting portion with the one side portion in the width direction where the flat portion 14 is formed toward the other end in the width direction. It is formed in an expanded shape so as to be enlarged, and the other surface in the thickness direction is an inclined surface portion 15.

Further, in the present embodiment, the light guide unit 20 is provided in the case unit 10 so that the light is emitted from the inclined surface part 15 and the emission direction is directed in a direction substantially orthogonal to the inclined surface part 15. In the illustrated example, an example in which the light guide unit 20 is provided in the case unit 10 so as to be emitted from the other end portion in the width direction of the case unit 10 (the inclined surface unit 15) is illustrated.
Moreover, in this embodiment, as shown in FIG. 1, it is set as the illuminating device 1 which illuminates the light-emitting device 1 indirectly, the attachment surface 13 of the case part 10 is made to follow the attachment object surface 3, and The installation structure which installed the contact surface 11 along the irradiation object surface 2 is illustrated. That is, the light guide unit 20 is provided in the case unit 10 so that the emission direction is directed in a direction inclined toward the irradiation target surface 2 along which the contact surface 11 of the case unit 10 is aligned. The light emitting device 1 provided with such a light guide unit 20 is configured to emit substantially uniformly in a line from the inclined surface portion 15 of the case unit 10 toward the irradiation target surface 2 and irradiate the irradiation target surface 2. ing.

  The length dimension of the case portion 10 may be set as appropriate from the viewpoints of handleability, workability, and the like. For example, as described later, the light emitting device 1 is used as indirect illumination, and a marginal shape or a baseboard is used. In the case of a structure to be installed in a shape, the length may be the same as a general construction material such as a peripheral edge or a baseboard. For example, the length dimension of the case portion 10 may be about 1000 mm to 3000 mm. Further, the width dimension (vertical dimension in FIG. 1) of the case portion 10 may be set as appropriate from the viewpoint of the irradiation range of the irradiation target surface 2 and the appearance, for example, a general peripheral edge. It is good also as a width dimension comparable as construction materials, such as a skirting board, and good also as about 50 mm-200 mm. Moreover, the flat part (width direction one side part) by which the thickness direction other surface was made into the plane part 14 and the expansion-shaped part (width direction other side part) by which the thickness direction other surface was made into the inclined surface part 15 are shown. The ratio of the width dimension may be appropriately set from the same viewpoint as described above. For example, it is good also considering the ratio of the width dimension of the said flat part and the said expanded part as about 1: 0.5-1: 2.

Further, the thickness dimension of the case portion 10 may be set as appropriate from the same viewpoint as described above, and may be, for example, about 5 mm to 40 mm. Moreover, the thickness dimension of the said flat plate-shaped site | part may be made into the same thickness dimension as construction materials, such as a general surrounding edge and a baseboard, and is good also as about 5 mm-15 mm. Further, the ratio of the thickness dimension between the flat part and the maximum thickness part of the spread part depends on the same viewpoint as described above, the dimension of the light guide part 20, the position where the light guide part 20 is provided, and the like. It may be set as appropriate, for example, about 1: 1.2 to 1: 3.
In addition, the inclination angle of the inclined surface portion 15 of the case portion 10 with respect to the flat surface portion 14 (the angle formed between the virtual surface obtained by extending the flat surface portion to the other end in the width direction of the case portion 10 and the inclined surface portion 15) is the same as described above. May be set as appropriate. For example, the inclination angle may be about 5 to 60 degrees, preferably about 10 to 30 degrees. In the illustrated example, the inclination angle of the inclined surface portion 15 with respect to the flat surface portion 14 is set to approximately 20 degrees. If the tilt angle is too small, the irradiation range tends to increase, but the illuminance tends to decrease. In addition, when the light emitting device 1 is configured as an indirect illumination and is installed in a peripheral shape or a baseboard shape as will be described later, the light emitted from the light guide unit 20 tends to enter the eyes directly. is there. On the other hand, if the inclination angle is too large, the irradiation range tends to be small, and the thickness dimension of the expanded portion (the maximum thickness portion) tends to be large.

  In the present embodiment, the other end surface in the width direction of the case portion 10 is an inclined surface 12 that is inclined with respect to the mounting surface 13. The inclined surface 12 is formed so as to be substantially orthogonal to the inclined surface portion 15. Thus, by making the other end surface in the width direction of the case portion 10 the inclined surface 12 that is inclined with respect to the attachment surface 13, the case portion 10 can be efficiently made thin. In other words, the inclined surface portion 15 is made larger than the illustrated example so as to extend to the other end in the width direction so that the light guide portion 20 can be accommodated, and the other end surface in the width direction is substantially orthogonal to the mounting surface 13. Compared with the case where it forms in, the case part 10 can be made to look thin effectively.

In the present embodiment, the ribs 12 a and 15 a are provided on the inclined surface (the other end surface in the width direction) 12 and the inclined surface portion 15, respectively. These ribs 12 a and 15 a are provided over the entire length of the case portion 10.
The rib 12 a provided on the inclined surface 12 is formed along the edge with the inclined surface portion 15, and is provided so as to protrude in a substantially orthogonal direction with respect to the inclined surface 12.
The rib 15a provided on the inclined surface portion 15 is formed along an edge of one side in the width direction (abutting surface 11 side) of the cover portion 25 that is substantially flush with the inclined surface portion 15. 15 so as to protrude in a substantially orthogonal direction.
By providing such ribs 12a and 15a, when a wall cloth or the like is attached to the inclined surface 12, the flat surface portion 14 and the inclined surface portion 15 at a construction site or the like, it functions as a contact (positioning) of the wall cloth. Can be made. Note that both or one of the inclined surfaces 12 and the ribs 12a and 15a of the inclined surface portion 15 may not be provided.

Further, the case portion 10 is provided with a housing portion 16 for housing the light guide portion 20. The accommodating portion 16 is provided in a hollow shape over the entire length of the case portion 10.
The accommodating portion 16 has side wall portions 17 on both sides as inner surfaces formed so that both sides of the case portion 10 in the direction substantially along the width direction are opposed to the reflecting surface portions 24, 24 on both sides of the light guide portion 20. , 17. In the present embodiment, the side wall portions 17 on both sides are formed so as to be substantially orthogonal to the inclined surface portion 15.
In addition, the housing portion 16 covers the bottom wall portion 18 in which both sides of the case portion 10 in the direction substantially along the thickness direction are connected to the other side surface portion 23 opposite to the emission surface portion 22 of the light guide portion 20. It is divided by the part 25. In the present embodiment, the bottom wall portion 18 and the cover portion 25 are formed substantially parallel to the inclined surface portion 15. That is, the accommodating portion 16 is substantially rectangular when viewed in the longitudinal direction of the case portion 10.

  Moreover, in this embodiment, the connection site | part with the bottom wall part 18 with which the other side part 23 of the light guide part 20 was connected is made into the light-diffusion part 18a. The light diffusing portion 18a may be configured by forming the case portion 10 from a synthetic resin material such as a white resin having good light diffusibility. Alternatively, at least the light diffusing portion 18a of the case portion 10 may be formed from a synthetic resin material having a good light diffusibility, and the other portion of the case portion 10 may be formed from another synthetic resin material. .

  In the present embodiment, the case portion 10 is provided with a plurality of hollow portions 19, 19, 19. These hollow portions 19, 19, 19 are provided over the entire length of the case portion 10. In the example of the figure, an example is shown in which a single hollow portion 19 is provided in a flat plate portion whose other surface in the thickness direction is a flat portion 14. Further, in the illustrated example, the hollow portion 19 is provided on each of the plate-like portion side (abutment surface 11 side) and the attachment surface 13 side of the accommodating portion 16 of the width direction other side portion where the other surface in the thickness direction is the inclined surface portion 15. , 19 are shown. By providing such hollow portions 19, 19, 19, the case portion 10 can be reduced in weight and cost. In the illustrated example, an example is shown in which the thickness dimension of a part of the partition wall that divides each of the hollow parts 19, 19, 19 and the accommodating part 16 is different from the thickness dimension of the other partition walls. However, all of these partition walls may have substantially the same thickness.

  In addition, you may make it provide the attaching part for attaching the said light-emitting device 1 to attachment object in the case part 10. FIG. For example, the attachment portion is opened in the other surface in the thickness direction (the flat surface portion 14 or the inclined surface portion 15), and the stopper insertion holes penetrating the case portion 10 in the thickness direction are spaced along the longitudinal direction of the case portion 10. It may be provided at a plurality of locations with a gap. In this case, it is good also considering the site | part which provides the fastener penetration hole of the case part 10 as a solid state over the full length. Alternatively, a groove that opens on the other surface in the thickness direction (the flat surface portion 14 or the inclined surface portion 15) may be provided over the entire length of the case portion 10, and the groove bottom of the groove may be used as the attachment portion. In this case, a mark groove such as a substantially V-shaped groove may be provided over the entire length at the groove bottom of the groove. In addition, various attachment parts can be used.

  The light guide unit 20 is provided over the entire length of the case unit 10. Moreover, in this embodiment, the light source units 27 and 27 provided with the light sources 29 and 29 are arrange | positioned at the longitudinal direction both ends of the light guide part 20, respectively (refer FIG. 3). That is, in the present embodiment, the incident surface portions 21 and 21 are provided at both ends in the longitudinal direction of the light guide portion 20. In the present embodiment, as shown in FIG. 2A, both longitudinal end surfaces of the light guide 20 are substantially flat surfaces and are incident surface portions 21, 21. You may make it provide the lens-shaped part which was tapering toward the longitudinal direction outward side and the outer peripheral surface was made into the convex curve shape. The lens-shaped portion may be provided with a substantially cylindrical recess that opens outward in the longitudinal direction and receives the light sources 29 and 29, and the bottom surface and the inner peripheral side surface of the recess may be used as the incident surface. Alternatively, a lens may be provided between each incident surface portion 21, 21 of the light guide unit 20 and each light source 29, 29.

Moreover, in this embodiment, the light guide part 20 is made into the shape of a lens having an expanded shape (conical shape) as it goes from the other side surface part 23 on the light diffusion part 18a side to the emission surface part 22, and the reflection surface parts 24 on both sides thereof. 24 is a convex curved surface shape. Further, in the illustrated example, the width of the light emitting portion 20 side portion of the light guide portion 20 is made larger than that of the other side portion 23 side portion, and the reflection surface portions 24 and 24 on both sides are stepped. By setting it as such a structure, the entrance plane parts 21 and 21 of the longitudinal direction both end surfaces of the light guide part 20 can be enlarged efficiently. Instead of the aspect in which the reflection surface portions 24 and 24 are stepped as described above, the reflection surface portions 24 and 24 may be formed in a series in an expanded shape from the other side surface portion 23 toward the emission surface portion 22.
Further, in the illustrated example, the reflecting surface portions 24 and 24 on both sides are provided at substantially equal intervals from the side wall portions 17 and 17 on both sides of the housing portion 16 of the case portion 10. Note that the side wall portions 17 and 17 on both sides of the housing portion 16 of the case portion 10 have a space between the reflecting surface portions 24 and 24 so that the substantially entire reflecting surface portions 24 and 24 do not contact the side wall portions 17 and 17. May be formed, and instead of the flat surface shape as shown in the figure, the shape may correspond to the reflecting surface portions 24, 24 on both sides.

The light guide section 20 substantially intersects the reflection surface sections 24 and 24 and the incident surface sections 21 and 21 on both sides, and one side surface section formed along the longitudinal direction serves as an output surface section 22. The case portion 10 is located on the other surface side in the thickness direction. Further, the emission direction from the emission surface portion 22 (the optical axis of the emitted light) is provided so as to be substantially orthogonal to the inclined surface portion 15 of the case portion 10.
In the present embodiment, it is assumed that the light guide portion 20 and the cover portion 25 are integrally formed by connecting both edge portions on the reflection surface portions 24, 24 on both sides of the emission surface portion 22 to the cover portion 25. Yes. Moreover, in this embodiment, the light guide part 20 and the cover part 25 shall be integrally formed so that a clearance gap may be formed between the output surface part 22 and the cover part 25 between both edge parts. In the present embodiment, an example is shown in which the exit surface portion 22 has a concave curved surface shape, and a gap is provided between the back surface 26 of the cover portion 25 that has a substantially flat plate shape. In addition, as an aspect which provides a clearance gap between the back surface 26 of the cover part 25, and the output surface part 22 between both edge parts, it is not restricted to such an aspect. For example, the exit surface portion 22 may have a substantially flat surface or a convex curve surface shape, and the back surface 26 of the cover portion 25 may have a concave curve surface shape so that a gap is formed between the exit surface portion 22 and the exit surface portion 22.

Further, the cover portion 25 has one end in the width direction (abutting surface 11 side) connected to a side wall portion 17 on one side in the width direction that defines the accommodating portion 16 of the case portion 10, and the other side in the width direction (inclined). The end portion of the surface 12 is connected to the side wall portion 17 on the other side in the width direction that defines the accommodating portion 16 and is integrally formed with the case portion 10.
Moreover, the cover part 25 is made into the shape of a thin flat plate, and is provided over the full length of the case part 10 and the light guide part 20. The case part 10, the light guide part 20, and the cover part 25 that are integrally formed in this way have a uniform cross-sectional shape over the entire length perpendicular to the longitudinal direction.
Further, the cover portion 25 is provided so that the surface thereof is substantially flush with the inclined surface portion 15 of the case portion 10 (more specifically, the inclined surface portion 15 where the rib 15a is not provided). .

  Moreover, as shown in FIG. 1, you may make it form the light distribution pattern which distributes the light emission part 20 toward the irradiation object surface 2 side in the cover part 25. As shown in FIG. For example, a light distribution pattern may be formed in which the light passing through the cover portion 25 is directed toward the irradiation target surface 2 with respect to the emission direction from the emission surface portion 22 of the light guide portion 20 (the optical axis of the emission light). Good. By providing the cover part 25 in which such a light distribution pattern is formed, it is possible to more effectively irradiate a portion of the irradiation target surface 2 in the vicinity of the attachment target surface 3 (on the wall in FIG. 1).

Further, the cover portion 25 may be formed of the same material as the light guide portion 20, or contains a milky white color material made of a material different from the light guide portion 20, a diffusing material, or the like. It may be formed from the above material.
The light guide 20 may be formed of a material having a high refractive index, such as a resin material having translucency such as an acrylic resin or a polycarbonate resin, or a transparent resin material.
Moreover, the case part 10, the light guide part 20, and the cover part 25 integrally formed as described above may be integrally formed by, for example, two-color (different material) extrusion molding.

The light guide unit 20 is not limited to the above, and the light incident from the incident surface unit 21 is reflected by the light diffusion unit 18a and the reflection surface units 24 and 24, guided along the longitudinal direction, and emitted. What is necessary is just a structure of what is called an edge light system radiate | emitted from the surface part 22. FIG.
Further, in a state where the light emitting device 1 is installed, a wall cloth or the like is stuck on the construction site at least on the inclined surface (the other end surface in the width direction) 12, the flat surface portion 14, and the inclined surface portion 15 of the exposed case portion 10. However, the present invention may be applied to surface makeup such as sticking or painting of a decorative sheet. In this case, when the case part 10, the light guide part 20, and the cover part 25 are integrally formed, a decorative sheet may be attached.

The light source units 27 and 27 provided on both ends in the longitudinal direction of the light guide unit 20 have substantially the same configuration. As shown in FIG. 2B, the light source units 27 and 27 are light emitting elements that constitute the light sources 29 and 29. Substrates 28 and 28 having LEDs (light emitting diodes) and the like are provided.
Each board | substrate 28 and 28 is made into the shape of a thin flat plate, and the thickness direction is arrange | positioned along the longitudinal direction of the light guide part 20. As shown in FIG. Electronic components such as LEDs and connectors as light emitting elements to be the light sources 29 and 29 are mounted on the light guide unit 20 side of the substrates 28 and 28.
The LED as the light source 29 may be a shell type with a light emitting element (LED element) sealed with resin or the like, a chip shape, or other shapes, and a surface mount type. You may make it do. Moreover, as LED as the light sources 29 and 29 mounted in each board | substrate 28 and 28, it is not restricted to single, It is good also as multiple. In addition, the light sources 29 and 29 mounted on the substrates 28 and 28 are not limited to LEDs, and other semiconductor light emitting elements or other light emitting elements may be employed. Further, each substrate 28, 28 is formed from a metal-based material such as aluminum from the viewpoint of improving heat transfer from various electronic components mounted on the substrate 28, 28 and improving heat dissipation. Alternatively, a multilayer structure in which insulating layers or the like are stacked may be used.

  Moreover, in this embodiment, the light-emitting device 1 is provided with the end caps 31 and 31 attached to each of the longitudinal direction both ends of the case part 10, as shown in FIG. In the present embodiment, the end caps 31 are configured to seal the openings on both sides in the longitudinal direction of the case portion 10. That is, as described above, the case portion 10, the light guide portion 20, and the cover portion 25 are integrally formed, and the openings on both sides in the longitudinal direction of the case portion 10 including the housing portion 16 that is hollow are formed on the end caps 31, 31. It is set as the structure sealed by. By adopting such a configuration, it is possible to suppress the intrusion of dust, moisture, and the like into the accommodating portion 16, and protect the light guide portion 20, the back surface 26 of the cover portion 25, the substrates 28 and 28, and the like. can do.

In the present embodiment, the light source 29 is incorporated in at least one end cap 31. In the present embodiment, both end portions in the longitudinal direction of the light guide unit 20 are incident surface portions 21 and 21, and light sources 29 and 29 are incorporated in the end caps 31 and 31, respectively. In the present embodiment, light source units 27 and 27 provided with light sources 29 and 29 are incorporated in the end caps 31 and 31, respectively.
These end caps 31, 31 have substantially the same configuration, and as shown in FIGS. 2 and 3, they are thin in the direction along the longitudinal direction of the case portion 10, and the outer shape seen in the longitudinal direction of the case portion 10. The shape depends on the shape.

Further, as shown in FIG. 2B, the end cap 31 is provided with a recess 32 that opens toward the case portion 10, and the light source unit 27 is accommodated in the recess 32. The light source unit 27 is accommodated in the recess 32 of the end cap 31 so that the light source 29 faces the incident surface portion 21 of the light guide portion 20 in a state where the end cap 31 is attached to the case portion 10.
Note that the light source unit 27 may be attached to the end cap 31 with a fastener such as a screw or an adhesive. Further, the end cap 31 may be provided with a fitting recess into which the light source unit 27 is fitted. In addition, various attachment modes can be employed.

  Moreover, as an attachment aspect of the end cap 31 to the case part 10, you may make it attach with fasteners, such as a screw. In this case, an attachment portion for attaching the end cap 31 may be provided on the case portion 10. For example, the case portion 10 may be provided with a fastener hole that is open at both longitudinal end faces and penetrates in the longitudinal direction of the case portion 10 as an attachment portion. Alternatively, the end cap 31 may be attached to the case portion 10 with an adhesive or the like. In addition, various attachment modes can be employed.

The power supply to each of the light source units 27 and 27 described above may be performed via a power supply unit 30 accommodated in the hollow portion 19 provided in the case portion 10 as shown in FIG. Thus, by providing the hollow part 19 in the case part 10, the power supply unit 30 and wiring can be accommodated. In addition, the wiring to the power supply unit 30 may be provided through a ceiling, a wall, or the like by providing a wiring hole so as to open in the attachment surface 13 and the hollow portion 19 of the case portion 10.
In addition, an operation unit for performing ON / OFF, dimming, or the like of the light emitting device 1 may be provided at an appropriate position of the light emitting device 1 or may be provided at an appropriate position of the attachment target surface 3. Also good. Furthermore, the operation unit of the light emitting device 1 may include a wireless (wireless) operation unit.

Next, an example of an installation structure of the light emitting device 1 according to the present embodiment having the above-described configuration will be described.
In FIG. 1, the mounting surface 13 of the case portion 10 of the light emitting device 1 is rotated along the wall surface 3 as the mounting target surface, and the contact surface 11 of the case portion 10 is aligned along the ceiling surface 2 as the irradiation target surface. The installation structure installed in the edge shape is illustrated. As described above, the light emitting device 1 may be attached to the wall surface 3 by providing the case portion 10 with a fastener insertion hole or the like as an attachment portion and attaching the light emitting device 1 with a fastener such as a screw. Moreover, it is good also as an aspect which attaches the attachment surface 13 of the case part 10 to the wall surface 3 with adhesive materials, such as an adhesive agent and an adhesive tape, instead of or in addition to such an attachment aspect.
By setting it as such an installation structure, it radiate | emits toward the ceiling surface 2 diagonally upward from the light guide part 20 (cover part 25) provided so that it may radiate | emit from the inclined surface part 15 of the light-emitting device 1. FIG. Thereby, the ceiling surface 2 near a wall can be irradiated and the said light-emitting device 1 can be functioned as what is called a cove illumination.

  In addition, you may make it install the said light-emitting device 1 over the whole wall surface 3 (full width of a wall width direction) as an attachment object surface, or you may make it install partially with respect to the wall surface 3 Also good. Moreover, when installing over the whole wall surface 3, you may make it install the several light-emitting device 1 adjacently so that it may connect to a longitudinal direction. Moreover, when installing the light-emitting device 1 over the wall surface 3 and the wall surface adjacent to this wall surface 3, it attaches to each edge part of the longitudinal direction of each case part 10 and 10 faced in the corner part of wall surfaces. The end caps 31 and 31 may be appropriately deformed into a corner cap shape and connected. Or it is good also as an aspect which joins each end cap 31 and 31 butt | matched in the corner part of wall surfaces in the shape of a joint.

Moreover, as an aspect which installs the said light-emitting device 1 along the entrance corner in a building, it is not restricted to an above-described installation structure.
For example, the mounting surface 13 of the case portion 10 of the light emitting device 1 may be installed along the ceiling surface 2 and the contact surface 11 of the case portion 10 may be installed along the wall surface 3 in a peripheral shape. According to this, the wall surface 3 near the ceiling can be irradiated, and the light-emitting device 1 can function as so-called cornice illumination.
Or it is good also as a structure where the attachment surface 13 of the case part 10 of the light-emitting device 1 is installed along the wall surface 3, and the contact surface 11 of the case part 10 is installed in a baseboard shape along the floor surface. According to this, the floor near the wall can be irradiated, and the light emitting device 1 can function as foot lighting. Or it is good also as a structure which installs the attachment surface 13 of the case part 10 of the light-emitting device 1 along a floor surface, and installs the contact surface 11 of the case part 10 along the wall surface 3. FIG. According to this, the wall surface 3 near the floor can be irradiated.

Alternatively, the mounting surface 13 of the case portion 10 of the light emitting device 1 is, for example, along the upper surface (the upper surface of the top plate) of the wall storage device and the contact surface 11 of the case portion 10 is along the wall surface 3. It is good also as a structure to install. According to this, the wall surface 3 near the upper surface of the storage device can be irradiated. Furthermore, for example, a front surface such as a wheel provided at the lower end of the storage device may be an attachment target surface, and a floor surface may be an irradiation target surface.
Moreover, it is not restricted to the aspect which used the front surface, such as the upper surface of a floor-standing type | mold storage apparatus, and a wheel, as an attachment object surface in this way. For example, it is good also as an aspect which makes the lower surface of storage apparatuses, such as a hanging cupboard arrange | positioned near the ceiling along the wall surface 3, the attachment object surface, and makes the wall surface 3 the irradiation object surface. Or it is good also as an aspect which uses the lower surface of storage devices, such as a hanging cupboard, as an irradiation object surface, and uses the wall surface 3 as an attachment object surface.

Since the light emitting device 1 according to the present embodiment is configured as described above, it is possible to improve the handleability during assembly and management.
That is, the light guide unit 20 that guides the light from the light source 29 and emits the light from the emission surface 22 on one side surface along the longitudinal direction and the case unit 10 that accommodates the light guide unit 20 are connected via the light diffusion unit 18a. It is formed integrally. Therefore, the number of parts and the number of assembly steps can be reduced, and handling at the time of assembly and management can be improved. Moreover, the light guide part 20 and the case part 10 can be integrally manufactured by extrusion molding etc., manufacturing efficiency can be improved and cost reduction can be achieved.
Further, the light guide unit 20 and the case unit 10 are connected to the reflection surface units 24 and 24 on both sides along the longitudinal direction intersecting the emission surface unit 22 of the light guide unit 20 and the inner surfaces (side wall units) 17 and 17 of the case unit 10. They are connected via a light diffusing portion 18a on the opposite side of the emission surface portion 22 so as to provide a space between them. Therefore, for example, when the reflection surface portions 24 and 24 on both sides of the light guide portion 20 are connected and integrated with the case portion 10, it is conceivable that light guided at the contact portion with the case portion 10 diffuses. Compared with such a thing, the reflective efficiency (light guide efficiency) in the reflective surface parts 24 and 24 of both sides can be improved. Thereby, the output efficiency from the output surface part 22 of the light guide part 20 can be improved.

Moreover, in this embodiment, since the translucent cover part 25 is provided in the emission direction front side of the output surface part 22 of the light guide part 20, it is possible to directly apply dust or the like to the output surface part 22 of the light guide part 20. Adhesion can be suppressed. Thereby, diffusion of light due to adhesion of dust or the like to the emission surface portion 22 can be suppressed, and directivity of light emitted from the emission surface portion 22 can be improved.
Moreover, in this embodiment, since the light guide part 20 and the cover part 25 are integrally formed, compared with the case where a cover part is used as another member, a number of parts and an assembly man-hour can be reduced. The handling at the time of assembly and management can be improved. In addition, it is possible to suppress the adhesion of dust or the like to the emission surface 22 during assembly or management.

  Moreover, in this embodiment, the light guide part 20 and the cover part 25 are connected to both edge parts on the reflection surface parts 24 and 24 side on both sides of the light emission surface part 22, and the light emission surface part 22 and the cover part between these two edge parts. Are formed integrally with each other so as to form a gap. Therefore, for example, when the substantially central portion in the width direction of the light exit surface 22 of the light guide portion 20 or the substantially entire surface is connected and integrated with the cover portion 25, light from the light exit surface portion 22 may diffuse in the cover portion 25. Though conceivable, the directivity of light emitted from the emission surface portion 22 can be improved as compared with such a configuration.

In the present embodiment, the incident surface portions 21 and 21 are provided on both sides in the longitudinal direction of the light guide portion 20, and the light sources 29 and 29 are disposed to face the incident surface portions 21 and 21, respectively. Therefore, for example, as compared with the case of the light emitting device 1 in which the light of the light source 29 is incident only from one longitudinal end portion of the light guide unit 20, light emission is insufficient at the other longitudinal end side of the light emitting device 1 or along the longitudinal direction. It is possible to suppress non-uniformity of light emission.
In the present embodiment, since the light source 29 is incorporated in the end cap 31 attached to at least one end of the case portion 10 in the longitudinal direction, the number of assembling steps can be reduced, and handling at the time of assembly and management is facilitated. It can be improved further.
Moreover, in this embodiment, since each light source 29 and 29 arrange | positioned at the longitudinal direction both sides of the light guide part 20 is incorporated in the end caps 31 and 31 attached to the longitudinal direction both ends, respectively, it handles. The sex can be further improved.

  Moreover, in this embodiment, since the case part 10 is made into the elongate substantially strip | belt-plate shape which made the one surface of thickness direction the planar attachment surface 13, it can be easily installed with respect to an attachment object. Further, the case portion 10 has a structure in which the light guide portion 20 is accommodated so as to be emitted from the thickness direction other surface (inclined surface portion) 15 side which is the surface side thereof. Therefore, as described above, the light emitting device 1 is attached to a wall surface, a ceiling surface, a floor surface, or the like as an attachment target along the corner in the building, so that a surface intersecting the attachment target is indirectly illuminated. Can be irradiated. In addition, since the case portion 10 has a long and substantially strip-like shape, when it is installed along the entrance corner as described above, it has a rounded or baseboard-like appearance, and has no sense of incongruity. Can be installed. Moreover, when it is installed along the corners in this way, it becomes relatively long, but according to the present embodiment, as described above, the handleability can be improved. , Which is preferable.

In the present embodiment, the light guide unit 20 is provided so that the emission direction is directed in a substantially orthogonal direction with respect to the inclined surface portion 15 of the case unit 10. Therefore, when it is installed along the entrance corner as described above, it is possible to effectively irradiate the irradiation target surface 2 while suppressing the emitted light from directly entering the eye. That is, by setting the contact surface 11 of the one end surface in the width direction of the case portion 10 along the irradiation target surface 2, the light emitted from the light guide portion 20 from the inclined surface portion 15 on the other side portion in the width direction is Irradiation can be performed over a wide range with relatively high directivity with respect to the irradiation target surface 2.
Moreover, the position of the light guide unit 20 from the irradiation target surface 2 can be defined by installing the contact surface 11 of the one end surface in the width direction of the case unit 10 along the irradiation target surface 2. This irradiation pattern can be realized in a typical manner. For example, when a lighting device is provided so as to be attached to a wall surface, a ceiling surface, or the like, it may be troublesome to position and design the lighting device with respect to the irradiation target surface. The position of the light guide unit 20 can be defined. In addition, the irradiation range, illuminance, and the like can be easily obtained by changing the width dimension of one side portion (the flat plate-like portion) in the width direction, the position of the light guide unit 20 along the width direction of the inclined surface portion 15, the inclination angle, and the like. It can also be changed.

In addition, while the flat surface portion 14 and the inclined surface portion 15 are provided on the surface side of the case portion 10 and the light guide portion 20 is provided so as to be emitted from the inclined surface portion 15, the case portion 10 can be thinned. A storage space for the light guide unit 20 can be efficiently provided.
Moreover, in this embodiment, the light guide part 20 is provided so that it may radiate | emit from the width direction other end part of the case part 10. FIG. Therefore, for example, the width dimension of the case portion 10 (that is, the light-emitting device 1 itself) is efficiently reduced as compared with the case where the light guide portion 20 is provided so as to be emitted from an intermediate portion in the width direction of the case portion 10. be able to.

In addition, in this embodiment, although the example which attached the end caps 31 and 31 which respectively integrated the light sources 29 and 29 to the longitudinal direction both ends of the case part 10 is shown, it is not restricted to such an aspect. The light source unit 27 may be directly attached to the case portion 10 without providing the end cap 31 incorporating such a light source 29 on both sides or one side in the longitudinal direction of the case portion 10. In this case, the opening of the housing portion 16 of the case portion 10 may be sealed with the light source unit 27. In this case, the case portion 10 may be provided with an attachment portion such as a stopper insertion hole for attaching the light source unit 27.
Moreover, in this embodiment, although the light-emitting device 1 which provided the incident surface parts 21 and 21 in the longitudinal direction both ends of the light guide part 20, and arrange | positioned the light sources 29 and 29 facing each incident surface part is illustrated, this way It is not restricted to a certain aspect. For example, the light emitting device 1 may be configured such that only one end portion in the longitudinal direction of the light guide portion 20 is the incident surface portion 21 and the light source 29 is disposed opposite to the incident surface portion 21. In this case, the other end surface in the longitudinal direction of the light guide unit 20 may be used as a reflection unit.

Moreover, in this embodiment, the light guide part 20 and the cover part 25 are connected to both edge parts on the reflection surface parts 24 and 24 side on both sides of the light emission surface part 22, and the light emission surface part 22 and the cover part between these two edge parts. Although an example in which a gap is formed integrally with 25 is shown, the present invention is not limited to such an embodiment. For example, the other part or substantially the entire surface of the light exiting part 22 of the light guide part 20 may be brought into contact with the cover part 25 to be integrally formed, or the light guide part 20 and the cover part 25 may be formed integrally. It is good also as a separate body, without making it contact or connect in this way. In this case, the cover part 25 may be formed integrally with the case part 10, or the cover part 25 may be separated from the case part 10.
Furthermore, it is good also as an aspect which exposed the output surface part 22 of the light guide part 20 directly in the thickness direction other surface (inclined surface part) 15 of the case part 10, without providing such a cover part 25. FIG. In this case, it is good also as an aspect which connected both the edge parts by the side of the reflective surface parts 24 and 24 of the both sides in the output surface part 22 of the light guide part 20 to the case part 10. FIG.

Moreover, in this embodiment, the light-emitting device 1 which is installed in the shape of a construction material along the corner in the building and is suitable as indirect lighting is illustrated, and the outer shape of the case portion 10 is the above shape. Although an example is shown, the shape is not limited to the above. For example, without providing the inclined surface portion 15 on the other surface side in the thickness direction, substantially the entire surface of the other surface in the thickness direction is a flat surface portion, and the other end surface in the width direction is not the inclined surface 12 but is substantially orthogonal to the mounting surface 13. It may be a flat part.
Moreover, although the example mentioned above has shown the example which installed the light-emitting device 1 which concerns on this embodiment along the entrance corner part in a building, as an installation object of the said light-emitting device 1, it is restricted to an above-described example. However, it may be installed on various installation targets. Moreover, it is good also as an aspect installed instead of the aspect which installs the light-emitting device 1 which concerns on this embodiment as indirect illumination as direct illumination. Furthermore, the light emitting device 1 according to the present embodiment may be incorporated into various building materials, furniture, devices, and the like. Depending on the installation target, installation mode, installation target, etc. of the light emitting device 1, the outer shape of the case unit 10, the position and shape of the light guide unit 20 accommodated in the case unit 10, the emission direction, etc. You may make it deform | transform.

DESCRIPTION OF SYMBOLS 1 Light-emitting device 10 Case part 13 Mounting surface 15 Inclined surface part (Thickness direction other surface)
17 Side wall (inner surface)
18a Light diffusion part 20 Light guide part 21 Incident surface part 22 Output surface part 24 Reflective surface part 25 Cover part 29 Light source 31 End cap

Claims (3)

A light source, a light guide portion having an incident surface portion for allowing light from the light source to enter at one end portion in the longitudinal direction, and an exit surface portion for emitting light from the incident surface portion on one side surface portion along the longitudinal direction; A case portion that accommodates the light guide portion, and a translucent cover portion provided on the emission direction front side of the emission surface portion of the light guide portion ,
The light guide part and the case part are arranged so that a space is provided between the reflection surface part on both sides along the longitudinal direction intersecting the light emission part of the light guide part and the inner surface of the case part. It is connected and formed integrally through the light diffusion part on the opposite side ,
In the light guide portion and the cover portion, both edge portions on the reflection surface portion side of the emission surface portion are connected to each other, and a gap is formed between the emission surface portion and the cover portion between these both edge portions. The light emitting device is integrally formed as described above . In claim 1 ,
The case portion is a long, substantially strip-shaped plate having one surface in the thickness direction as a flat mounting surface, and has a structure in which the light guide portion is accommodated so as to be emitted from the other surface side in the thickness direction. A light emitting device characterized by comprising: In claim 1 or 2 ,
A light emitting device comprising: an end cap in which the light source is incorporated and attached to at least one end portion in the longitudinal direction of the case portion.

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