JPWO2013183205A1 - Lighting fixture unit - Google Patents

Abstract

The lighting fixture includes an LED light source, a housing that houses the LED light source, and a lighting control unit that is electrically connected to the LED light source and controls lighting of the LED light source. The housing has a first surface, a second surface, a third surface, a fourth surface, and a fifth surface facing each other as inner surfaces. The housing has an opening, and the opening is surrounded by the first surface, the second surface, the third surface, and the fifth surface, and faces the fourth surface. The housing is formed so that the direction in which the first surface and the second surface face each other is the longitudinal direction. A reflective portion is provided on at least a part of the inner surface of the housing.

Description

  The present invention relates to a luminaire that controls irradiation from an LED light source and a luminaire unit using the same.

  2. Description of the Related Art In recent years, light-emitting diodes (hereinafter referred to as LEDs) have been used as light sources for outdoor lighting or lighting and illumination of buildings such as towers and bridges from the viewpoint of energy saving and maintenance saving. However, since the LED light source is a point light source and the light emitting surface is small, an illumination device that widens the light emitting surface by providing a reflector has been proposed (for example, Japanese Patent Publication No. 2010-153400).

  A conventional lighting device has a reflector that refracts a flat plate into a U-shape, and a plurality of LED light emitting elements are installed as light sources at the peak of the reflector. With such a configuration, the above-described conventional lighting device can widen the light emitting surface and irradiate light over a wide range.

  When an illuminating device is used for illumination purposes such as a bridge or a tower, a very high output LED light source is used so that the emitted light can be seen from a distance.

  However, even when a high-power LED light source is used, it is difficult to ensure visibility from a long distance because the light emitting surface is small. In addition, the viewing angle is narrow because the emission direction from the light source is limited.

  On the other hand, such a high-power light source temporarily reduces the visual acuity of the driver when the driver of an aircraft passing over the vicinity of the bridge or a ship passing under the bridge looks directly. Sometimes. For this reason, when a lighting device having a high-output light source is attached to a bridge, it may be required to irradiate in a specific direction. That is, for example, the vertical radiation angle of the light emitted from the lighting device is limited so as not to reduce the visual acuity of the driver of the aircraft or ship passing near the bridge.

  In order to widen the light emitting surface, the configuration of the conventional illumination device described above can be used, or the light emitting surface can be widened and the viewing angle widened by a lens. However, when the light emitting surface is widened by a lens, the lens is enlarged and the manufacturing cost is increased. In addition, when the configuration of the conventional illumination device described above is used, it is difficult to limit the vertical spread of the emitted light, and the light is diffused at a position close to the light source, so that the visibility from a long distance is lacking. There is a problem.

  The objective of this invention is providing the lighting fixture and lighting fixture unit which can irradiate the light of an LED light source over a long distance in a specific direction.

  The lighting fixture and lighting fixture unit of this invention are a lighting fixture which solves the said subject, and a lighting fixture unit using the same. The lighting fixture includes an LED light source, a housing that houses the LED light source, and a lighting control unit that is electrically connected to the LED light source and controls lighting of the LED light source. The housing has a first surface, a second surface, a third surface, a fourth surface, and a fifth surface that face each other in the longitudinal direction of the housing. The third surface connects the first surface and the second surface. The fourth surface is connected to the third surface, and connects the first surface and the second surface. The fifth surface is connected to the fourth surface, and connects the first surface and the second surface. The housing has an opening, and the opening is surrounded by the first surface, the second surface, the third surface, and the fifth surface. A reflective portion is provided on at least a part of the inner surface of the housing, that is, the inner surface having the first surface, the second surface, the third surface, the fourth surface, and the fifth surface.

  This luminaire may be configured to reflect light from the LED light source in a specific direction at the reflecting portion when viewed from the longitudinal direction of the housing, and radiate the light reflected by the reflecting portion to the outside from the opening.

  This lighting apparatus may be installed in a structure that is fixed at a predetermined location so that the specific direction is along a direction that faces the outside from the structure in a horizontal plane.

  Furthermore, this lighting fixture may be installed in the structure such that the third surface is below the fifth surface.

  Furthermore, the third surface is formed in a rectangular shape elongated in the longitudinal direction of the housing, and connects the first surface and the second surface in the longitudinal direction, and the fifth surface is connected to the third surface. The opening may be connected to the fourth surface so as to face the fourth surface.

  Further, the LED light source may be installed on the third surface.

  In the lighting device, the fourth surface and the fifth surface are smoothly connected inside the housing, and the fourth surface and the fifth surface are the opening surface and the third surface of the opening. Any of these may have a common curved surface in which a line of intersection with a perpendicular surface is a parabola.

  Furthermore, the reflection part may be provided on each of the first surface, the second surface, the fifth surface, the third surface, and the fourth surface inside the housing.

  Furthermore, the fourth surface on the inner side of the housing has a curved surface in which a line of intersection with a surface perpendicular to both the opening surface of the opening and the third surface is a parabola, and the fifth surface is 3 may be provided in parallel with the surface.

  Furthermore, inside the housing, the reflecting portion is provided on each of the first surface, the second surface, the third surface, and the fourth surface, and the fifth surface radiates from the LED light source. A reflected light reducing unit that reduces reflection of light may be provided.

  Furthermore, the focal point of the parabola may be located in the housing, and the LED light source may be provided at the focal point on the third surface.

  The luminaire unit is a luminaire unit including a plurality of luminaires. Each of the plurality of lighting fixtures is the above-described lighting fixture, and the plurality of lighting fixtures are arranged in a direction orthogonal to the longitudinal direction of the housing, and are arranged so that the respective openings are opened in the same direction.

  The light emission colors of the plurality of lighting fixtures can be changed independently.

  The plurality of lighting fixtures may correspond to the plurality of colors on a one-to-one basis, and each of the plurality of lighting fixtures may include a light emission color changing panel that changes light emitted from the LED light source to a corresponding color.

  According to the lighting fixture of this invention and a lighting fixture unit using the same, the light of an LED light source can be irradiated over a long distance to a specific direction.

Preferred embodiments of the invention are described in more detail. Other features and advantages of the present invention will be better understood with regard to the following detailed description and accompanying drawings.
It is the schematic which shows the bridge 2 in which the lighting fixture unit 1 of Embodiment 1 is used. It is a partial enlarged view of the bridge 2 shown in FIG. 3A is a side view of the lighting fixture unit 1 according to Embodiment 1, and FIG. 3B is a front view of the lighting fixture unit 1. FIG. It is a perspective view of the lighting fixture 10 in Embodiment 1. FIG. It is sectional drawing of line AA of the lighting fixture 10 shown in FIG. 6A is a case where the first side surface and the second side surface are not provided in the lighting fixture 10 shown in FIG. 4, and the left and right sides of the lighting fixture 10 when the length of the lighting fixture 10 in the left-right direction is 100 cm FIG. 6B is a diagram showing a radiation angle in a direction, and FIG. 6B is a case where the first side surface and the second side surface are not provided in the lighting fixture 10 shown in FIG. It is a figure showing the radiation angle in the left-right direction of the lighting fixture 10 at the time of. It is a figure showing the radiation angle to the left-right direction when the length of the left-right direction of the lighting fixture 10 of Embodiment 1 is 150 cm. It is a perspective view of the lighting fixture 20 in Embodiment 2. FIG. 9A is a diagram illustrating a radiation angle in the left-right direction of the lighting fixture 20 according to the second embodiment, and FIG. 9B is a diagram illustrating a radiation angle in the vertical direction of the lighting fixture 20 according to the second embodiment.

(Embodiment 1)
Hereinafter, the lighting fixture of Embodiment 1 and the lighting fixture unit using this lighting fixture are demonstrated using drawing.

  FIG. 1 shows a bridge 2 in which the lighting fixture unit of the first embodiment is used. The bridge 2 is a structure that is fixed at a predetermined place. As shown in FIG. 1, a girder 6 is supported by two main towers 3, a set of main cables 4, and a plurality of hanger ropes 5 hanging vertically from the main cables 4. One set of main cables 4 is hung on the main tower 3 and located at both ends of the girders 6 in the short direction. FIG. 2 is a partially enlarged view of a portion A of the bridge 2 shown in FIG. As shown in FIG. 2, the lighting fixture unit 1 is provided near the tip of the hanger rope 5. Each of the plurality of hanger ropes 5 of the bridge 2 is provided with a lighting fixture unit 1. The lighting fixture unit 1 is provided so as to emit light in the horizontal direction toward the outside of the bridge 2. That is, the luminaire unit 1 includes the bridge 2 so that the opening surface 171 (see FIG. 4) side of each luminaire 10 is the front, and the front of the luminaire unit 1 faces the outside of the bridge 2. Is provided.

  3A and 3B show the lighting fixture unit 1 of Embodiment 1, FIG. 3A is a side view of the lighting fixture unit 1, and FIG. 3B is a front view of the lighting fixture unit 1. The lighting fixture unit 1 of the first embodiment has three lighting fixtures 10. Each of the lighting fixtures 10 is fixed to the main body of the lighting fixture unit 1 by an attachment base (not shown). Note that the number of lighting fixtures 10 provided in the lighting fixture unit 1 is not limited to three, and may be one or more. The luminaire unit 1 is fixed to the hanger rope 5 by a mounting bracket 7 so as to emit light in the horizontal direction.

  A plurality of lighting fixture units 1 are thus attached to the bridge 2 and used for purposes such as illumination. When the lighting fixture unit 1 is used for the purpose of illumination, a high-output light source is used for the lighting fixture unit 1 so that the light emitted from the lighting fixture unit 1 can be visually recognized even from a distance.

  However, when an LED is used as the light source, it is difficult to ensure visibility from a long distance by direct viewing because the light emitting surface is small. In addition, the viewing angle is narrow because the emission direction from the light source is limited.

  Further, such a high-output light source temporarily reduces the visual acuity of the driver when the driver of an aircraft passing over the vicinity of the bridge 2 or a ship passing under the bridge 2 looks directly. There are things to do. Therefore, when the luminaire unit 1 having a high-output light source is attached to the bridge 2, the luminaire unit 1 is radiated from the luminaire unit 1 so as not to reduce the visual acuity of an aircraft or ship driver passing near the bridge 2. The vertical radiation angle of light is limited. That is, the light emitted from the lighting fixture unit 1 in the vertical direction is limited. Therefore, the luminaire unit 1 is installed on the bridge 2 so as to radiate light substantially forward. Here, “front” refers to a direction in which the luminaire unit 1 emits light when the luminaire unit 1 is provided on the bridge 2, and in the first embodiment, refers to a substantially horizontal direction.

  The lighting fixture 10 of the present invention solves the above problems. FIG. 4 is a perspective view of the lighting apparatus 10 according to the first embodiment. The luminaire 10 includes an LED light source 11, a housing 12 that houses the LED light source 11, and a lighting control unit (control unit) 9 that is electrically connected to the LED light source 11 and controls lighting of the LED light source 11 (see FIG. 3A). And have. The housing 12 includes a first side surface (first surface) 13 and a second side surface (second surface) 14 that face each other in the longitudinal direction (first direction) of the housing 12, and a lower surface (first surface). 3 surface) 15, an upper surface (fifth surface) 16, and a back surface (fourth surface) 19. The lower surface 15 connects the first side surface 13 and the second side surface 14. The back surface 19 is connected to the lower surface 15, and connects the first side surface 13 and the second side surface 14. The upper surface 16 is connected to the rear surface 19 and connects the first side surface 13 and the second side surface 14. However, in the first embodiment, the upper surface 16 and the rear surface 19 are smoothly connected and integrally provided. The upper surface 16 is connected to the rear surface 19 so as to face the lower surface 15. The housing 12 has an opening 17, and the opening 17 is surrounded by the first side surface 13, the second side surface 14, the lower surface 15, and the upper surface 16. The opening 17 faces the back surface 19. The housing 12 is formed such that the direction in which the first side surface 13 and the second side surface 14 face each other is the longitudinal direction (first direction). The lower surface 15 is formed in a plane, and the LED light source 11 is provided on the lower surface 15. The lower surface 15 is formed in a rectangular shape elongated in the longitudinal direction of the housing 12 and connects the first side surface 13 and the second side surface 14 in the longitudinal direction. Reflecting portions 18 are provided on the inner side surface of the housing 12 (the surface inside the housing 12), that is, the first side surface 13, the second side surface 14, the lower surface 15, the upper surface 16, and the rear surface 19. Yes. The reflector 18 reflects the incident light specularly by, for example, mirror finishing.

  With such a configuration, the light emitting surface of the lighting fixture 10 can be widened and light can be emitted in a specific direction, so that visibility from a long distance can be ensured. Further, since the light emitting surface is widened by using the reflecting portion 18 instead of the lens, it can be manufactured at a lower cost than the case of using the lens.

  In the luminaire unit 1 shown in FIGS. 3A and 3B, the three luminaires 10 are arranged in a direction (second direction) orthogonal to the respective longitudinal directions (first direction). A direction orthogonal to both the first direction and the second direction is defined as a third direction. Moreover, each opening part 17 of the three lighting fixtures 10 is arrange | positioned so that it may open in the same direction. By arranging the three lighting fixtures 10 in this manner, the overall size of the lighting fixture unit 1 can be reduced. In addition, the direction where the opening part 17 of the three lighting fixtures 10 opens is a direction along the third direction. In particular, the direction in which the openings 17 of the three lighting fixtures 10 are opened is preferably the third direction.

  The luminaire unit 1 in which the three luminaires 10 are arranged is installed on the bridge 2 so that a specific direction in which light is emitted is along the direction facing the outside from the bridge 2 in the horizontal plane. Further, the lighting fixture unit 1 is installed on the bridge 2 so that the lower surface 15 of each lighting fixture 10 is located below the upper surface 16.

  Below, the detail of the lighting fixture 10 of Embodiment 1 is demonstrated. FIG. 5 is a cross-sectional view taken along line AA of the luminaire 10 shown in FIG. As shown in FIG. 5, the upper surface 16 and the back surface 19 are smoothly connected to the inner side of the housing 12, and a line of intersection with a surface perpendicular to both the opening surface 171 and the lower surface 15 of the opening 17 is a parabola. Have a common curved surface. That is, the upper surface 16 and the back surface 19 have a common curved surface whose intersection line with a surface having a normal line in the longitudinal direction (first direction) is a parabola. Each of the upper surface 16 and the rear surface 19 is formed with curved surfaces so that the parabola is focused on the inside of the housing 12. Further, as described above, the reflecting portion 18 is provided on the upper surface 16 and the back surface 19. The LED light source 11 is preferably located at the parabolic focus of the top surface 16 and the back surface 19. Since the LED light source 11 emits light radially, the lighting fixture 10 can emit light emitted from the LED light source 11 in a certain direction by installing the LED light source 11 at the focal point of the parabola on the upper surface 16 and the rear surface 19. . That is, the light beam 40 emitted from the LED light source 11 is reflected by the curved surfaces of the upper surface 16 and the rear surface 19 and travels forward. In other words, the luminaire 10 reflects light from the LED light source 11 in a specific direction at the reflecting portion 18 when viewed from the longitudinal direction (first direction) of the housing 12. And the lighting fixture 10 radiates | emits the light reflected in the reflection part 18 from the opening part 17 outside. Thus, the light emitted from the LED light source 11 is reflected in a specific direction, so that the light of the lighting fixture 10 can be visually recognized even from a long distance. That is, a person who wants to see the illumination by the light of the lighting fixture 10 can visually recognize the light of the lighting fixture 10 even from a long distance. Moreover, the driver of an aircraft or a ship can visually recognize the light of the lighting fixture 10 without directly viewing the light of the lighting fixture 10.

  In the first embodiment, it is desirable that the reflecting portion 18 is provided on the entire inner surface (inner surface) of the housing 12. As a result, the light emitted from the LED light source 11 can be efficiently reflected forward (in the direction of arrow B in FIG. 5).

  The reflection portion 18 may be provided on a part of the inner side surface (inner surface) of the housing 12. That is, the reflecting portion 18 may be provided on at least a part of each of the first side surface 13, the second side surface 14, the lower surface 15, the upper surface 16, and the back surface 19. For example, the brightness of the luminaire 10 can be adjusted by adjusting the range in which the reflecting portion 18 is provided on the inner surface (inner surface) of the housing 12.

  In the first embodiment, the LED light source 11 uses a high-power white LED element. As shown in FIG. 3A, a light emission color changing panel 21 is provided in the opening 17 of the housing 12 so as to cover the opening 17. Each of the three lighting fixtures 10 provided in the lighting fixture unit 1 is provided with a light emission color changing panel 21 of a different color. As shown in FIG. 2, an aviation warning light 8 that emits red light is installed in the vicinity of the luminaire unit 1 to pay attention to the position of the bridge 2 for an aircraft passing in the vicinity of the bridge 2. Therefore, for example, the three lighting fixtures 10 of the lighting fixture unit 1 are provided with the light emission color changing panels 21 so as to emit green, blue, and white, respectively. By changing the light emission color of the lighting fixture 10 with such a light emission color change panel 21, a color can be changed easily. Moreover, since a white LED element can be used in common with all the LED light sources 11, when providing the several lighting fixture unit 1 in the bridge 2 whole, it can manufacture or procure more cheaply.

  That is, the plurality of lighting fixtures 10 have a one-to-one correspondence with the plurality of colors, and each lighting fixture 10 includes a light emission color change panel 21 that changes the light emitted from the LED light source 11 to the corresponding color. Yes.

  Note that the LED light sources 11 installed in the three lighting fixtures 10 of the lighting fixture unit 1 may be LED elements that emit different colors. For example, the lighting controller 9 (see FIG. 3A) can adjust the color of the LED light source 11 to realize different colors. In this case, the emission color changing panel 21 is not necessary.

  With the above configuration, the luminaire unit 1 is capable of different colors, and can provide various lighting patterns when used as illumination.

  When the luminaire unit 1 is provided for illumination of a bridge, in order to prevent a ship or aircraft driver passing nearby from directly viewing the light radiated from the luminaire 10, the emission angle in the vertical direction is Limited. However, in order to ensure the visibility from a long distance, it is required to widen the light emitting surface. Therefore, the luminaire 10 increases the length of the housing 12 in the left-right direction (first direction) in order to narrow the emission angle in the vertical direction (second direction) and widen the light emitting surface. It is possible to have a light emitting surface sufficient to ensure visibility from a long distance.

  6A and 6B show the left and right when the length in the left-right direction of the lighting fixture 10 is changed when the first side face 13 and the second side face 14 are not provided in the lighting fixture 10 shown in FIG. It represents the radiation angle of the luminaire 10 in the direction. FIG. 6A is a diagram showing the radiation angle when the length in the left-right direction is 100 cm, and FIG. 6B is a diagram showing the radiation angle when the length in the left-right direction is 300 cm. As can be seen from FIGS. 6A and 6B, the longer the horizontal length of the lighting fixture 10, the wider the radiation angle in the horizontal direction. That is, when the front direction of the lighting fixture 10 is 0 °, the range of the emitted light shown in FIG. 6B is wider than the range of the emitted light shown in FIG. 6A in the range of ± 30 ° to ± 60 °. ing.

  On the other hand, since the lighting fixture unit 1 receives strong wind on the bridge 2, it is preferable that the volume is as small as possible (FIG. 1). Therefore, it is desirable to reduce the size of each of the three lighting fixtures 10 constituting the lighting fixture unit 1 while ensuring a desired radiation angle in the left-right direction.

  The lighting fixture 10 of Embodiment 1 has a first side surface 13 and a second side surface 14 in the longitudinal direction of the housing 12, and a reflecting portion 18 is provided on each surface located inside the housing 12. Yes. With such a configuration, it is possible to obtain a wider radiation angle in the left-right direction than in the case where the left-right direction of the housing 12 has the same length and the first side surface 13 and the second side surface 14 are not provided. . FIG. 7 is a diagram illustrating a radiation angle in the left-right direction when the length in the left-right direction of the lighting fixture 10 of the first embodiment is 150 cm. As can be seen from FIG. 7, by providing the housing 12 with the first side surface 13 and the second side surface 14, the length of the housing 12 shown in FIG. 6B in the left-right direction is 300 cm and the first side surface 13 and the second side surface 14 can be realized in the left-right direction as much as the radiation angle. That is, in the range of ± 30 ° to ± 60 °, the range of the emitted light shown in FIG. 7 is wider than the range of the emitted light shown in FIG. 6A.

  For example, when the LED light source 11 is surrounded only by the lower surface 15, the rear surface 19, and the upper surface 16, the light emitted from the LED light source 11 is in the longitudinal direction of the housing 12, that is, the arrows C 1 and C 2 shown in FIG. There is a risk of leaking in the direction. In other words, the light emitted from the LED light source 11 leaks in the direction of approximately ± 90 ° shown in FIG. 6A, and thus the front direction (approximately −60 ° to + 60 ° of light emitted from the LED light source 11). The contribution to (range) is reduced.

  However, if the first side surface 13 and the second side surface 14 are further provided in addition to the lower surface 15, the rear surface 19, and the upper surface 16, for example, light emitted in the direction of approximately ± 90 ° shown in FIG. 6A is reflected. Thus, the contribution of the light emitted from the LED light source 11 in the front direction (approximately in the range of −60 ° to + 60 °) can be increased.

  As described above, the first side surface 13 and the second side surface 14 are provided in the longitudinal direction of the housing 12 of the lighting fixture 10, and the reflecting portions 18 are provided on the surfaces positioned inside the housing 12. Thus, it is possible to reduce the size and secure a radiation angle in the left-right direction.

  In the first embodiment, the first side surface 13 and the second side surface 14 are planes, but are not limited to planes. For example, the first side surface 13 and the second side surface 14 may be curved surfaces.

(Embodiment 2)
Hereinafter, the lighting fixture of Embodiment 2 is demonstrated using drawing.

  FIG. 8 is a perspective view of the lighting fixture 20 of the second embodiment. The luminaire 20 includes an LED light source 11, a housing 22 that houses the LED light source 11, and a lighting control unit 9 (see FIG. 3A) that is electrically connected to the LED light source 11 and controls lighting of the LED light source 11. The housing 22 includes a first side surface (first surface) 23 and a second side surface (second surface) 24, a lower surface (third surface) 25, and an upper surface (fifth surface) 26 that face each other. And a back surface (fourth surface) 29.

  The lower surface 25 connects the first side surface 23 and the second side surface 24. The back surface 29 is connected to the lower surface 25, and connects the first side surface 23 and the second side surface 24. The upper surface 26 is connected to the rear surface 29, and connects the first side surface 23 and the second side surface 24. The lower surface 25 and the upper surface 26 connect the first side surface 23 and the second side surface 24, respectively. The housing 22 has an opening 27, and the opening 27 is surrounded by a first side surface 23, a second side surface 24, a lower surface 25, and an upper surface 26. The housing 22 is formed such that the direction in which the first side surface 23 and the second side surface 24 face each other is the longitudinal direction (first direction). The lower surface 25 is formed in a plane, and the LED light source 11 is provided on the lower surface 25. The lower surface 25 is formed in a rectangular shape elongated in the longitudinal direction of the housing 22 and connects the first side surface 23 and the second side surface 24 in the longitudinal direction.

  Inside the housing 22, the back surface 29 has a curved surface in which a line of intersection with a surface perpendicular to both the opening surface 271 and the bottom surface 25 of the opening 27 is a parabola. That is, the back surface 29 has a common curved surface in which a line of intersection with a surface having a normal line in the longitudinal direction (first direction) is a parabola. The upper surface 26 is provided in parallel with the lower surface 25.

  Similar to the lighting fixture 10 of the first embodiment, the lighting fixture 20 can also be used in the lighting fixture unit 1 of the first embodiment. Similarly to the lighting fixture 10 of the first embodiment, when a white light emitting element is used for the LED light source 11 of the lighting fixture 20, as shown in FIG. 3A, the emission color changing panel 21 is opened. By providing in 27, the luminescent color of the lighting fixture 20 can be changed. Further, when RGB light emitting elements are used for the LED light sources 11 of the lighting fixture 20, the light emission color is changed by adjusting the lighting control unit 9 electrically connected to each LED light source 11. be able to.

  Moreover, the same effect can be obtained by applying the configuration described in the first embodiment to the lighting fixture 20 of the second embodiment. Also in the lighting fixture 20 of Embodiment 2, it is desirable to install the LED light source 11 at the focal point of a parabola that is a line of intersection between the back surface 29 and the opening surface 271 and the surface perpendicular to the bottom surface 25 of the opening 27. By doing in this way, the lighting fixture 20 can irradiate the light of the LED light source 11 to a front direction more efficiently.

  Below, the characteristic of the lighting fixture 20 of Embodiment 2 is demonstrated. As shown in FIG. 2, when the luminaire unit 1 is used for the bridge 2, the luminaire 20 emits light in the horizontal direction, and a ship or aircraft driver passing nearby does not look directly at the light source. It is required to have a configuration. The lighting fixture 20 of Embodiment 2 has an upper surface 26 parallel to the lower surface 25 in order to make it difficult to directly view the light source from the outside. By providing the lighting device 20 with the upper surface 26, for example, a person passing near the light source can be prevented from directly viewing the LED light source 11 from above.

  As shown in FIG. 8, the first side surface 23, the second side surface 24, the lower surface 25, and the back surface 29 are provided with reflecting portions 28, respectively. In the second embodiment, it is desirable that the reflecting portion 28 is provided on each of the first side surface 23, the second side surface 24, the lower surface 25, and the back surface 29. By doing in this way, the light emitted from the LED light source 11 can be more efficiently radiated forward.

  On the other hand, the reflected light reducing unit 30 is provided on the upper surface 26. Since the upper surface 26 is provided in parallel with the lower surface 25, if a reflective portion is provided on the upper surface 26, the light reflected by the upper surface 26 is reflected downward rather than forward rather than forward. As described above, in the luminaire used for the bridge, since the radiation angle in the vertical direction is limited, it is desirable that the downward reflection is reduced. Therefore, in the lighting fixture 20 of Embodiment 2, by providing the reflected light reduction unit 30 on the upper surface 26, it is possible to prevent light from being reflected downward from the upper surface 26 side.

  The reflected light reduction unit 30 is formed, for example, by roughening the upper surface 26 located inside the housing 22 and can reduce reflection in one direction by irregularly reflecting incident light. Further, for example, by applying a light-absorbing material such as black paint as the reflected light reducing unit 30 to the upper surface 26 located inside the housing 22, reflection of light from the upper surface 26 side downward can be reduced. Thus, by providing the upper surface 26 having the reflected light reduction unit 30 on the inner side of the housing 22, it is possible to prevent direct view from above and reduce downward reflection.

  9A and 9B are diagrams showing the radiation angles of the lighting fixture 20 according to the second embodiment, FIG. 9A shows the radiation angles in the left-right direction of the lighting fixture 20, and FIG. 9B shows the radiation angles in the vertical direction of the lighting fixture 20. Represents. In the second embodiment, the left-right direction of the lighting fixture 20 is the longitudinal direction (first direction) of the housing 22, and the lighting fixture unit 1 is installed so that the left-right direction of the lighting fixture 20 is the horizontal direction. Suppose that The vertical direction of the lighting fixture 20 is the normal direction (second direction) of the lower surface 25, and the lighting fixture unit 1 is installed so that the vertical direction of the lighting fixture 20 is the vertical direction. As can be seen from FIGS. 9A and 9B, the radiation angle in the vertical direction is significantly limited as compared with the radiation angle in the horizontal direction.

  As described above, the lighting fixture 20 according to the second embodiment has the upper surface 26 provided in parallel with the lower surface 25 and formed with the reflected light reduction unit 30, thereby reducing the vertical emission angle. It is possible to prevent direct view from above.

  In each of the above embodiments, each of the LED light sources 11 provided in the lighting fixtures 10 and 20 is one light emitting element, but is not limited thereto. The LED light source 11 may be configured using a plurality of light emitting elements. Moreover, in said each embodiment, although the LED light source 11 is provided in the lower surface 15 or the lower surface 25, it is not restricted to this structure. For example, the LED light source 11 may be installed on the lower surface 15 or the lower surface 25 via an installation base for providing the LED light source 11. Even in such a case, it is preferable that the LED light source 11 is located at the focal point of a parabola that is an intersection line between the curved surface of the back surface 19 and the upper surface 16 and the surfaces perpendicular to the opening surface 171 and the lower surface 15 of the opening 17. . The LED light source 11 is preferably located at the focal point of a parabola that is an intersection line between the curved surface of the back surface 29 and the surfaces perpendicular to the opening surface 271 and the lower surface 25 of the opening 27.

  In each of the above embodiments, the up-down direction (second direction) and the left-right direction (first direction) refer to relative directions in the lighting fixture unit 1 and the lighting fixtures 10, 20, and are referred to as the horizontal direction. The vertical direction means an absolute direction.

  In each embodiment, the lighting fixtures 10 and 20 have the first surface as the first side surface, the second surface as the second side surface, the third surface on which the LED light source 11 is installed as the lower surface, and the fourth surface. However, the arrangement of the lighting fixtures 10 and 20 is not limited to this. For example, the luminaires 10 and 20 may be arranged such that the third surface on which the LED light source 11 is installed is an upper surface and the fifth surface is a lower surface.

  The lighting fixture of the present invention can irradiate the light of the LED light source over a long distance in a specific direction, and can further reduce the vertical emission angle of the light emitted from the lighting fixture. Therefore, it can be used for illumination of buildings such as bridges or towers, or for lighting up.

  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.

The lighting fixture and lighting fixture unit of this invention are a lighting fixture which solves the said subject, and a lighting fixture unit using the same. The luminaire includes an upper surface and a lower surface that are planes parallel to each other, an LED light source provided at the center of the lower surface, and a back surface that connects the upper surface and the lower surface, and whose inner cross section is a surface formed by pushing a parabola. The specific direction is the irradiation direction, the direction in which the upper surface and the lower surface face each other is the vertical direction, the direction perpendicular to the vertical direction is the longitudinal direction, and the direction along the back surface is the longitudinal direction. The back surface is arranged with respect to the LED light source so that the light emitted from the light source is reflected on the back surface in parallel with the irradiation direction. The lighting fixture further includes a first side surface and a second side surface that face in the longitudinal direction and connect the upper surface, the lower surface, and the rear surface. The first side surface is provided such that a part of the light from the LED light source is reflected on the second side surface side and in the irradiation direction side. The second side surface is provided so that part of the light from the LED light source is reflected on the first side surface side and in the irradiation direction side. A reflected light reducing unit is provided on the upper surface and reduces reflection of light emitted from the LED light source.

This luminaire may be installed in a building, and light emitted from the luminaire may be radiated outward from the building .

The luminaire unit includes the luminaire described above, and includes a shielding surface that shields a part of the light that is directly emitted from the LED light source and is directed to the irradiation direction side from the upper surface or the lower surface .

A lighting instrument of this, buildings are bridges, the irradiation direction of light emitted from the luminaire may be a horizontal direction.

The lighting fixture unit may include a plurality of the lighting fixtures, and the plurality of lighting fixtures may be provided in a stacked manner .

The present invention relates to a luminaire unit using the lighting fixtures for controlling the illumination from the LED light source.

An object of the present invention is to provide a luminaire unit Ru can irradiate the light of the LED light source over long distances to a specific direction.

Luminaire unit of the present invention is a luminaire unit that solve the above problems. The lighting fixture unit includes a lighting fixture. The luminaire includes an upper surface and a lower surface that are planes parallel to each other, an LED light source provided at the center of the lower surface, and a back surface that connects the upper surface and the lower surface, and whose inner cross section is a surface formed by pushing a parabola. The specific direction is the irradiation direction, the direction in which the upper surface and the lower surface face each other is the vertical direction, the direction perpendicular to the vertical direction is the longitudinal direction, and the direction along the back surface is the longitudinal direction. The back surface is arranged with respect to the LED light source so that the light emitted from the light source is reflected on the back surface in parallel with the irradiation direction. The lighting fixture further includes a first side surface and a second side surface that face in the longitudinal direction and connect the upper surface, the lower surface, and the rear surface. The first side surface is provided such that a part of the light from the LED light source is reflected on the second side surface side and in the irradiation direction side. The second side surface is provided so that part of the light from the LED light source is reflected on the first side surface side and in the irradiation direction side. A reflected light reducing unit is provided on the upper surface and reduces reflection of light emitted from the LED light source. The luminaire unit is light directly irradiated from the LED light source, and is a part of light directed toward the irradiation direction side from the upper surface or the lower surface, or light irradiated from the LED light source, and the upper surface or A shielding surface that shields part of the light reflected by the lower surface is provided.

This luminaire unit may be installed in a building, and light emitted from the luminaire may be radiated outward from the building.

In this lighting fixture unit , the building is a bridge, and the irradiation direction of the light emitted from the lighting fixture may be a horizontal direction.

Claims (14)

An LED light source;
A housing for housing the LED light source;
A controller that is electrically connected to the LED light source and controls lighting of the LED light source,
The housing is
A first surface and a second surface facing each other in the longitudinal direction of the housing;
A third surface connecting the first surface and the second surface;
A fourth surface connected to the third surface and connecting the first surface and the second surface;
A fifth surface connected to the fourth surface and connecting the first surface and the second surface;
An opening surrounded by the first surface, the second surface, the third surface, and the fifth surface;
A reflecting portion is provided on at least a part of the inner surface having the first surface, the second surface, the fifth surface, the third surface, and the fourth surface;
lighting equipment. Viewed from the longitudinal direction, the light reflected from the LED light source is reflected in a specific direction at the reflective portion, and the light reflected by the reflective portion is radiated to the outside from the opening.
The lighting fixture according to claim 1. The structure that is fixed at a predetermined place is installed so that the specific direction is along the direction facing the outside from the structure in a horizontal plane.
The lighting fixture according to claim 2. Installed in the structure such that the third surface is lower than the fifth surface;
The lighting fixture according to claim 3. The third surface is formed in a rectangular shape elongated in the longitudinal direction, connecting the first surface and the second surface in the longitudinal direction,
The fifth surface is connected to the fourth surface so as to face the third surface,
The opening is opposed to the fourth surface;
The lighting fixture of any one of Claims 1-4. The LED light source is installed on the third surface.
The lighting fixture of any one of Claims 1-5. The fourth surface and the fifth surface are smoothly connected inside the housing, and the fourth surface and the fifth surface are the opening surface of the opening and the third surface. Having a common curved surface whose intersection line with a surface perpendicular to any of the surfaces is a parabola,
The lighting fixture of any one of Claims 1-6. On the inner side of the housing, the reflecting portion is provided on each of the first surface, the second surface, the fifth surface, the third surface, and the fourth surface,
The lighting fixture according to claim 7. The fourth surface inside the housing has a curved surface in which a line of intersection with a surface perpendicular to both the opening surface of the opening and the third surface is a parabola,
The fifth surface is provided in parallel with the third surface,
The lighting fixture of any one of Claims 1-6. Inside the housing, the reflecting portion is provided on each of the first surface, the second surface, the third surface, and the fourth surface,
The fifth surface is provided with a reflected light reduction unit that reduces reflection of light emitted from the LED light source.
The lighting fixture according to claim 9. The focal point of the parabola is located within the housing;
The LED light source is provided at the focal point,
The lighting fixture of any one of Claims 7-10. A luminaire unit comprising a plurality of luminaires,
Each of these lighting fixtures is a lighting fixture of any one of Claims 1-11,
The plurality of lighting fixtures are arranged in a direction orthogonal to the longitudinal direction, and are arranged so that each of the openings opens in the same direction.
Lighting fixture unit. Each luminescent color of the plurality of lighting fixtures can be independently changed,
The lighting fixture unit according to claim 12. The plurality of lighting fixtures correspond one-to-one with a plurality of colors,
Each of the plurality of lighting fixtures includes a light emission color changing panel that changes light emitted from the LED light source to a corresponding color.
The lighting fixture unit according to claim 13.

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