JP5313059B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture used for light-up lighting, floodlighting for signboards or sign advertisements, and more particularly to a technique for realizing a wide light distribution extending laterally.

2. Description of the Related Art Conventionally, floodlights that illuminate various signs such as canopy signs, parapet signs, and facade signs, or sign advertisements are known. In general, when the width of a signboard or sign advertisement (hereinafter referred to as “irradiated surface”) exceeds the illumination range of one projector, a plurality of projectors are arranged along the width of the irradiated surface, and these projectors are arranged. The entire surface to be irradiated is illuminated. However, when the number of projectors increases, there is a problem that the initial cost of the projectors increases and the running cost and power consumption also increase.
On the other hand, in the lighting field, various lighting fixtures that realize a wide light distribution are known (see, for example, Patent Documents 1 to 3).

Japanese Patent Laid-Open No. 06-275112 Japanese Patent Application Laid-Open No. 07-045113 Japanese Patent Laid-Open No. 11-126502

  By the way, when floodlighting a signboard or a sign advertisement, it is desired to uniformly illuminate the entire area from a position at a predetermined distance from the irradiated surface. However, none of the conventional techniques has realized a light distribution suitable for uniformly illuminating a horizontally elongated surface. Therefore, when illuminating a horizontally illuminated surface uniformly, it was necessary to illuminate using a plurality of projectors after all.

  In particular, when a large signboard surface is illuminated from above or below, conventional signboard lamps are often limited in width from the signboard surface, and the distance from the projector in the vertical direction (2 to 5 times the output width) It is difficult to ensure the illuminance of a certain signboard surface, and while ensuring the illuminance in the vertical direction, a plurality of projectors are arranged at equal intervals in the horizontal direction to ensure the illuminance of the signboard surface. However, small signboards such as parapet signboards and facade signboards have many horizontally long signboard surfaces, and the vertical direction is about 1 to 2 times the output width, while the horizontal direction is about 4 times the output width. Several low W (watt) floodlights were lit side by side, and the illumination rate was low.

  The present invention has been made in view of the above-described circumstances, and provides a lighting apparatus that realizes a horizontally long light distribution suitable for illuminating a horizontally long irradiated surface and uniformly illuminates the entire irradiated surface. The purpose is to provide.

  In order to achieve the above object, in a lighting fixture that includes a fixture body having a light source and a reflective surface disposed behind the light source and illuminates the illuminated surface from a position away from the illuminated surface, the reflective surface Is provided with a reflection surface for a distance located behind the light emitting point of the light source, a reflection surface for the front is provided in succession to the reflection surface for the distance in the height direction, and the reflection for the distance is provided with the light emission point as a boundary. A left-side far reflection surface is provided on the left side divided into left and right sides, a right far-side reflection surface is provided on the right side, and a front area located in front of the instrument body on the irradiated surface is directly reflected by the light source and the Illuminate with the reflected light of the front reflective surface, illuminate with the reflected light of the left far reflective surface between the front region and the left end of the illuminated surface, and far right between the front region and the right end It is characterized by illuminating with the reflected light of the reflective surface.

  Further, the present invention provides the above-described lighting fixture, wherein a plurality of facets are provided on each of the left far reflection surface and the right far reflection surface, and each between the front region and the left end and right end of the irradiated surface is provided. The reflected light of each facet is overlapped so as to be rough at the center side of the irradiated surface and dense at the end side.

  Further, the present invention provides the above-described lighting fixture, wherein the reflection surface includes a sub-front reflection surface that is continuous from the far reflection surface to the opposite side of the front reflection surface, and an end in the height direction of the reflection surface. The light source, which is formed by bending a part toward the front, and is configured by a straight tube lamp is disposed through an insertion hole provided in the sub-front reflective surface, and the front reflective surface and the sub-front reflective surface The front area is illuminated with the reflected light.

According to the present invention, the reflecting surface is provided with a far reflecting surface located behind the light emitting point of the light source, and the front reflecting surface is provided continuously in the height direction with the far reflecting surface. The far reflection surface is divided into left and right sides, the left far reflection surface is provided on the left side, the right far reflection surface is provided on the right side, and the front area located in front of the instrument body on the irradiated surface is the light source. Illuminate with direct light and reflected light from the front reflective surface, illuminate from the front area to the left end of the irradiated surface with reflected light from the left far reflection surface, and reflect from the front area to the right end for the far right reflection It was set as the structure illuminated with the reflected light of a surface.
With this configuration, the left and right reflective surfaces for the far side and the right far side of the reflective surface for the far side achieve a wide (horizontally long) light distribution extending to the left and right, and the left and right ends of the illuminated surface are equivalent. Can be illuminated with brightness. In addition to this, since the reflection surface is provided with a reflection surface for distant at the position closest to the light emitting point, the illuminance is secured at both the left and right sides of the irradiated surface, and the illuminance is balanced over the entire irradiated surface. Can be achieved. Furthermore, the left end of the irradiated surface is illuminated with the reflected light of the left far reflecting surface from the front area to the left end of the illuminated surface and the right far reflecting surface with the reflected light of the right far reflecting surface. The light to illuminate and the light to illuminate the right end do not cross the light source, respectively, and the light is blocked by the light source, so that the illuminance is not reduced or unevenness is not generated at the end.

It is a perspective view of the projector for advertising concerning the embodiment of the present invention. It is a perspective view which shows the structure of a projector main body. It is a figure which shows the front surface and right side surface of a projector main body. It is sectional drawing of a light projector main body, (A) is II sectional view in the front view of FIG. 3, (B) is II-II sectional view in the front view of FIG. It is a figure which shows typically the light distribution control by the reflective surface of a light projector main body. It is a figure which shows the illuminance distribution when the sign advertisement of height 1m and width 4m is illuminated, (A) shows the illuminance distribution of an advertisement projector, (B) shows the illuminance distribution of the conventional projector.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, as an example of a lighting fixture, an advertisement floodlight suitable for use in sign advertisement and billboard floodlight will be described.
FIG. 1 is a perspective view of an advertising floodlight 1 according to the present embodiment.
The advertisement projector 1 includes an arm 4 having a predetermined length extending in a rod shape, and a projector main body (apparatus main body) 6 provided at the tip of the arm 4. The arm 4 is installed in a building where the sign advertisement 2 to be illuminated is installed so that the projector main body 6 is disposed at a position protruding forward from the upper position of the sign advertisement 2 by a predetermined distance. 6 illuminates and illuminates the illuminated surface 3 which is the advertising surface of the sign advertisement 2. Examples of the illuminated surface 3 include a canopy signboard, a parapet signboard, a facade signboard, or various types of advertisements that are long in the horizontal direction, in addition to the advertisement surface of the sign advertisement 2. A specific mode when the advertising projector 1 illuminates the sign advertisement 2 will be described in detail later.

FIG. 2 is a perspective view showing the configuration of the projector main body 6, and FIG. 3 is a view showing the front and right side of the projector main body 6. 4 is a cross-sectional view of the projector main body 6, FIG. 4A is a cross-sectional view taken along the line II in the front view of FIG. 3, and FIG. 4B is a cross-sectional view taken along the line II-II in the front view. FIG.
As shown in these drawings, the projector main body 6 includes a case body 8. The case body 8 includes a lamp 10 as a light source, and a reflection surface 12 is provided behind the lamp 10. Yes.
The case body 8 is formed by forming an aluminum die cast into a box shape, and is divided into a base portion 14 and a light projecting portion 16 in the vertical direction. The base 14 is provided with an arm attachment 18, and the tip of the arm 4 is fixed to the arm attachment 18. At the time of installation, the projector main body 6 is turned upside down with the base 14 on the upper side and the light projecting unit 16 on the lower side. As shown in FIG. 4B, a ballast and a power supply box (not shown) are disposed in the front side space 15A, and a box body 17 provided with a socket 19 is provided in the back side space 15B. It is detachable.

  As shown in FIG. 2, the light projecting unit 16 houses the lamp 10, and a reflecting surface 12 is provided behind the lamp 10. In the light projecting unit 16, the top surface and the left and right side surfaces of the case body 8 are cut off, and light is irradiated not only from the front surface 20A of the light projecting unit 16 but also from the left and right side surfaces 20B and 20C and the top surface 20D. A polycarbonate glove 21 that covers the front surface 20A, the left and right side surfaces 20B and 20C, and the top surface 20D is attached to the light projecting unit 16.

  For the lamp 10, a 70 W ceramic metal halide lamp having a high efficiency with a lamp luminous flux of 7700 lm is used. As shown in FIG. 4B, the lamp 10 supports an arc tube 32 in a straight tube type transparent outer sphere 30 having a long axis J (FIG. 3), and one end portion of the outer sphere 30. This is a single-tube straight tube lamp having a base attached to the lower end (in the illustrated example). As shown in FIG. 4B, the lamp 10 is disposed in a posture in which a base (not shown) is attached to the socket 19 of the base portion 14 of the case body 8 and extends from the base portion 14 to the light projecting portion 16. That is, as shown in FIG. 2 and FIG. 3, the straight tube type lamp 10 is arranged in a posture extending in the height direction of the projector main body 6, and can irradiate light far in the lateral direction of the projector main body 6. As shown in FIG. 3, the left and right side surfaces of the case body 8 are deeply cut off from the front surface 20A side to the vicinity of the light emitting point 36 of the lamp 10 so as not to shield the light traveling in the lateral direction at these left and right side surfaces. It is made. Further, when the case body 8 is viewed from the side, the arc tube 32 is covered with the case body 8, and there is no leakage light on the rear side of the projector body 6, and the irradiation surface side is efficiently irradiated.

  As shown in FIG. 4B, the outer sphere 30 of the lamp 10 includes an inner tube 30A that encloses the arc tube 32 and an outer tube 30B that encloses the inner tube 30A. The outer tube 30B forms a triple tube structure. According to this triple tube structure, the outer bulb 30 is prevented from being broken or scattered against the rupture of the arc tube 32 that occurs rarely at the end of the life of the lamp 10. For this reason, it is not necessary to provide a protector for the bursting of the arc tube 32 in the projector main body 6, and the projector main body 6 can be reduced in size and cost. Therefore, the glove 21 is necessary when used outdoors as in the present embodiment, but can be used without a glove when used indoors. Further, according to the triple tube structure, since the heat of the arc tube 32 is difficult to leak out of the outer bulb 30, the temperature rise is suppressed even if the internal volume of the light projecting portion 16 is small, so that further downsizing and cost reduction can be achieved. It becomes possible. In particular, since a 70 W triple tube structure is employed in this embodiment, the temperature rise can be suppressed with a volume of 70% compared to the conventional ceramic arc tube 70 W.

As shown in FIGS. 2 and 4B, the reflection surface 12 is formed on the back and bottom surfaces of the light projecting portion 16 of the case body 8 and has a substantially L-shaped cross section.
More specifically, the reflecting surface 12 includes a far-side reflecting surface 40, a front-side reflecting surface 41, and a sub-front-side reflecting surface 42.
The far reflection surface 40 is located behind the light emitting point 36 of the lamp 10 and is formed in a strip shape extending left and right (lateral direction) with respect to the long axis direction of the lamp 10, and the front reflection surface 41 is far away. The reflection surface 40 is connected to the upper side in the height direction along the long axis direction of the lamp 10. The far reflection surface 40 and the front reflection surface 41 are provided behind the lamp 10 along the back surface of the case body 8.
The sub-front reflecting surface 42 is continuously provided so as to bend from the lower side in the height direction of the far-side reflecting surface 40 toward the front side. The sub-front reflective surface 42 partitions the inside of the case body 8 into a light projecting portion 16 and a base portion 14. As shown in FIG. 2, an insertion hole 39 through which the lamp 10 is inserted is formed in the sub-front reflective surface 42. When the lamp 10 is mounted, the lamp 10 mounted in the socket 19 of the box body 17 is inserted from the base portion 14, the lamp 10 is passed through the insertion hole 39, and the light emitting point 36 is disposed in front of the far reflection surface 40.

As shown in FIGS. 2 and 4A, the far reflection surface 40 is provided with a left far reflection surface 40A on the left side separated from the light emitting point 36 of the lamp 10 on the left and the right far away on the right side. A reflective surface 40B is provided.
As shown in FIG. 4A, each of the left far reflection surface 40A and the right far reflection surface 40B rises to the vicinity of the lamp 10 as shown in FIG. An inclined surface 45 for reflecting the light toward is formed.

The reflective surface 12 is configured integrally with the case body 8 by forming a reflection-enhancing film on each of the back surface and the bottom surface of the case body 8 constituting the light projecting unit 16. This increased reflection film is formed by sequentially laminating an undercoating, an aluminum vapor deposition film, a SiO ₂ film, and a TiO ₂ film on the case body 8 made of aluminum die casting, and a high reflectance of 90% or more is achieved.

FIG. 5 is a diagram schematically illustrating light distribution control by the reflecting surface 12 of the projector main body 6. In this light distribution control, the left and right sides of the sign advertisement 2 are illuminated in the same manner, and only the right half of the illumination is shown in FIG.
The sign advertisement 2 has a rectangular shape with a height of 1 m (meter) and a width of 4 m, and the projector main body 6 is disposed at a position 0.96 m away from the irradiated surface 3 of the sign advertisement 2. More specifically, the light emitting point 36 of the lamp 10 faces the lateral center line K of the sign advertisement 2 (illuminated surface 3) and is the same as the upper end 2A of the sign advertisement 2 (illuminated surface 3). The projector main body 6 is disposed so as to be located at a height. The mounting angle of the projector body 6 is set to 90 degrees, and at the mounting position, the lamp 10 extends vertically downward.

  The entire area of the irradiated surface 3 is divided into a front area 50 and a laterally distant area 51 in the lateral direction in terms of light distribution design. Further, the front area 50 is vertically divided into a front vicinity area 52. And a front distant region 53. The front area 50 is illuminated with direct light, the reflected light L1 from the front reflecting surface 41, and the reflected light L2 from the sub-front reflecting surface 42, and the side far area 51 is reflected from the far reflecting surface 40. Illuminated at L3.

  More specifically, the front area 50 is set in the center of the irradiated surface 3 and in the front area of the projector body 6. The front area 52 is located on the upper side near the projector body 6, and the lower side far from the projector body 6. A far front area 53 is set. Then, the projector main body 6 illuminates the front vicinity region 52 with direct light, and illuminates the far front region 53 with the reflected light L1 of the front reflective surface 41 and the reflected light L2 of the sub-front reflective surface 42. .

In this way, the front area 50 of the projector main body 6 is divided into upper and lower parts, the side closer to the projector main body 6 is illuminated with direct light, and the far side is reflected by the front reflective surface 41 and the sub-front reflective surface 42. By illuminating with, the illuminance balance at the top and bottom of the front area 50 is achieved.
Further, since the sub-front reflective surface 42 is also provided at a position corresponding to the bottom surface of the light projecting portion 16 when the lamp 10 is inserted, as shown in FIG. Further, the useless light traveling upward is reflected by the sub-front reflecting surface 42 and is effectively used for illumination of the front distant region 53, and the illuminance on the side far from the projector main body 6 can be secured.

  The lateral width of the front vicinity region 52 is defined by a width that can maintain a predetermined illuminance with direct light, and the front distant region 53 has a lateral width that is the same as or slightly wider than the front vicinity region 52 that is illuminated with direct light. Is set. A region between the front region 50 and the end 2 </ b> B of the sign advertisement 2 is set as a laterally distant region 51.

  Then, the projector main body 6 illuminates the side far region 51 with the reflected light L3 of the far reflection surface 40. More specifically, the far reflection surface 40 is provided with a left far reflection surface 40A and a right far reflection surface 40B on the left and right sides, as described above. By forming an inclined surface 45 that rises and inclines so that the end of the side approaches the lamp 10, the left side far region 51 is illuminated by the left side far reflecting surface 40A on the same side. Similarly, the right side far region 51 is illuminated by the right far reflecting surface 40B.

Thus, since the reflecting surface 12 includes the far reflecting surface 40 that illuminates the side far region 51, even when the sign advertisement 2 is long horizontally, the end portions 2B on both sides can be illuminated. Further, since the far reflection surface 40 is provided behind the lamp 10 so as to be closest to the light emitting point 36, the illuminance at the end portions 2B on both sides can be ensured even if the sign advertisement 2 is long horizontally.
Further, the left side far surface 51 is illuminated by the left far reflecting surface 40A, and the right side far region 51 is illuminated by the right far reflecting surface 40B. Since the reflected light L3 toward the region 51 does not cross the lamp 10 respectively, the lamp 10 does not block the reflected light L3 and cause uneven illuminance or reduced illuminance.

Here, as the sign advertisement 2 becomes longer in the lateral direction, the laterally distant area 51 becomes wider in the lateral direction. Therefore, the distance from the projector body 6 to the end portion 2B of the sign advertisement 2 is extended, and the end portion 2B with respect to the front area 50 vicinity The decrease in illuminance becomes noticeable and illuminance unevenness occurs.
Therefore, as shown in FIG. 2, a plurality of facets 47 are formed on each of the left far reflection surface 40A and the right far reflection surface 40B. As shown in FIG. 5, these facets 47 produce reflected light L <b> 3 having different lateral widths of the irradiation range R in the side far region 51. Specifically, each facet 47 has a reflected light L3 in which the entire region of the laterally distant region 51 is the irradiation range R1, and each of the irradiation ranges R2, R3,... With the lateral width gradually reduced with respect to the irradiation range R1. The reflected light L3 is made, and the reflected light L3 is densely overlapped at the end portion 2B of the sign advertisement 2 by overlapping all the irradiation ranges R1, R2, R3... Irradiate to
Thereby, since the end 2B of the sign advertisement 2 overlaps with the nectar while irradiating the same side far irradiation area 51 with each facet 47, the illuminance between the end 2B of the sign advertisement 2 and the vicinity of the front area 50 Is achieved, and uneven illumination is suppressed.

Further, in order to suppress unevenness in illuminance in the front distant region 53, the reflective surface 12 has a plurality of facets 48 on the front reflective surface 41 and a plurality of facets 49 on the sub-front reflective surface 42, as shown in FIG. Each is provided. As shown in FIG. 5, these facets 48 and 49 have reflected light L1 and L2 in which the entire area of the front distant region 53 is an irradiation range S1, and the height (vertical width) is gradually reduced with respect to the irradiation range S1. The respective reflected lights L1, L2 of the irradiation ranges S1, S2,... Are made, and these reflected lights L1, L2 are all irradiated ranges S1, S2, S3. Are overlapped and become dense, and irradiation is performed so that the overlap is rough toward the front vicinity region 52 side.
As described above, the facets 47, 48, and 49 described above are formed on the reflection surface 40 for the far side, the reflection surface 41 for the front surface, and the reflection surface 42 for the sub front surface of the reflection surface 12, respectively. The illuminance is balanced between the portion 2B and the lower end 2C and the central portion, and uneven illuminance is suppressed.

6A and 6B are diagrams showing the illuminance distribution when the sign advertisement 2 having a height of 1 m and a width of 4 m is illuminated. FIG. 6A shows the illuminance distribution of the advertisement projector 1, and FIG. 6B shows the conventional projector 90. Illuminance distribution is shown.
The conventional projector 90 is a lighting fixture using a 300 W self-ballast mercury lamp (lamp luminous flux 3700 lm) as a light source, which is used for lighting the sign advertisement 2 of this size, and the illuminance shown in FIG. The distribution is a distribution when three projectors 90 are arranged at equal intervals in the horizontal direction. Moreover, the installation aspect of the advertisement floodlight 1 of this embodiment is the same as that of FIG.

As shown in FIG. 6, the average illuminance of the sign advertisement 2 at this time is 554 lx in FIG. 6B using the conventional projector 90, whereas the advertisement projector 1 of this embodiment is used. In FIG. 6A, 627 lx is secured. Further, the illuminance below the both ends of the sign advertisement 2 in the horizontal direction, that is, below the sign advertisement 2 away from the advertisement projector 1 and the projector 90 is shown in FIG. 6 (B) using the conventional projector 90. While the brightness is around 300 lx, it is around 500 lx in FIG. 6A using the advertising projector 1 of the present embodiment, and it is favorable by using the advertising projector 1 of the present embodiment. You can see that it is illuminated.
In other words, the wide area of the sign advertisement 2 having a height of 1 m and a width of 4 m, which is conventionally illuminated using the three projectors 90, can be illuminated with sufficient brightness even with one advertisement projector 1. It can be seen that (horizontal) light distribution is realized.
Further, according to the advertising projector 1 of the present embodiment, one unit is equal to or more than three conventional projectors 90 using a 300 W self-ballast mercury lamp even though the 70 W lamp 10 is used. It can be seen that the brightness is achieved.
In addition, it can be seen that uneven illumination is sufficiently suppressed even when illuminated by one advertising floodlight 1.

As described above, according to the present embodiment, the far reflection surface 40 is provided on the reflection surface 12, and the far reflection surface 40 is divided into left and right with the light emitting point 36 as a boundary, and the left far reflection surface 40A and The right side far reflection surface 40B is formed. With this configuration, it is possible to illuminate the left and right ends of the irradiated surface 3 with equal brightness while realizing a wide (horizontally long) light distribution extending to the left and right.
In addition to this, according to the present embodiment, the distant reflecting surface 40 is provided at the position closest to the light emitting point 36 in the reflecting surface 12, so that the illuminance at the left and right ends of the irradiated surface 3 is secured, The illuminance can be balanced across the entire irradiated surface 3.
Furthermore, according to the present embodiment, the light from the front region 50 to the left end of the irradiated surface 3 is illuminated with the reflected light from the left far reflection surface 40A, and the light from the right far reflection surface 40B is illuminated to the right end. Therefore, the light that illuminates the left end of the irradiated surface 3 and the light that illuminates the right end do not cross the lamp 10, and the light is blocked by the lamp 10. It does not occur.

Further, according to the present embodiment, a plurality of facets 47 are provided on each of the left far reflection surface 40A and the right far reflection surface 40B, and each between the front region 50 and the left end and the right end of the illuminated surface 3, The reflected light L3 of each facet 47 is overlapped so as to be rough at the center side of the irradiated surface 3 and dense at the end side.
With this configuration, even if the lateral width of the lateral far region 51 set on the irradiated surface 3 is extended, the illuminance balance between the end 2B and the vicinity of the front region 50 is achieved, and the lateral far region 51 Irradiance unevenness can be suppressed.

In addition, according to the present embodiment, the reflecting surface 12 includes the sub-front reflecting surface 42 that continues from the distant reflecting surface 40 on the side opposite to the front reflecting surface 41, and the end of the reflecting surface 12 in the height direction. The straight tube type lamp 10 is disposed through the insertion hole 39 provided in the sub-front reflecting surface 42, and the reflection of the front reflecting surface 41 and the sub-front reflecting surface 42 is reflected. It was set as the structure which illuminates the front distant area | region 53 of the front area | region 50 with the lights L1 and L2.
With this configuration, the light that is wasted above the upper end of the irradiated surface 3 during installation can be reflected by the sub-front reflecting surface 42 and effectively used for illumination of the front distant region 53. The illuminance on the side far from the projector main body 6 in the region 50 can be secured.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.
For example, in the above-described embodiment, the case where the advertisement projector 1 illuminates the sign advertisement 2 from above is illustrated. However, the present invention is not limited to this, and the advertisement projector 1 is disposed below the sign advertisement 2 and the sign advertisement is displayed. 2 may be illuminated from below.
Further, for example, in the above-described embodiment, the reflecting surface 12 is integrally formed by forming a reflection-increasing film on the inner surface of the case body 8. However, the present invention is not limited thereto, and the reflecting surface 12 is formed using a reflecting mirror or a reflecting plate. It may be configured.

  Further, for example, in the above-described embodiment, the advertisement floodlight 1 has been described as the lighting apparatus according to the present invention, but the present invention is not limited thereto. That is, the present invention can be applied to any lighting fixture as long as the lighting fixture is disposed at a position away from the irradiated surface 3 and uniformly illuminates the entire area of the irradiated surface 3. It is also suitable for backlights that illuminate the entire area from behind and floodlights on the building walls.

  For example, in the above-described embodiment, a ceramic metal halide lamp is illustrated as an example of a light source. However, the present invention is not limited to this, and a high-pressure metal vapor discharge lamp such as a high-pressure mercury lamp or another metal halide lamp can be used. Further, the light source is not limited to a lamp, and an LED can also be used.

1 Advertising floodlights (lighting fixtures)
2 Sign advertisement 2B End 3 Irradiated surface 6 Projector body (equipment body)
8 Case body 10 Lamp (light source)
DESCRIPTION OF SYMBOLS 12 Reflective surface 16 Emitting part 32 Light emitting tube 36 Light emission point 39 Insertion hole 40 Reflective surface for far 40A Reflective surface for left far 40B Reflective surface for right far 41 Facet 50 Front area 51 Side far area 52 Front near area 53 Front far area 90 Projector

Claims (3)

In a lighting fixture that includes a fixture main body having a light source and a reflective surface disposed behind the light source, and that illuminates the illuminated surface from a position away from the illuminated surface,
The reflection surface is provided with a reflection surface for a distance located behind the light emitting point of the light source, and is provided with a reflection surface for a front surface in succession to the reflection surface for a distance in the height direction.
The left reflecting surface is provided on the left side, which is divided into the left and right from the light emitting point, and the right far reflecting surface is provided on the right side.
Illuminate a front area located in front of the instrument body on the illuminated surface with direct light from the light source and reflected light from the front reflective surface, and extend from the front area to the left end of the illuminated surface. Illuminating with the reflected light of the left far reflecting surface, and illuminating with the reflected light of the right far reflecting surface between the front region and the right end.   A plurality of facets are provided on each of the left-side far reflection surface and the right-side far reflection surface, and the reflected light of each facet is reflected from the front area to the left end and the right end of the illuminated surface, respectively. The lighting fixture according to claim 1, wherein the lighting fixtures overlap so as to be rough at the center side of the irradiation surface and dense at the end side. The reflective surface is formed with a sub-front reflective surface that is continuous from the remote reflective surface to the opposite side of the front reflective surface by bending the heightwise end of the reflective surface toward the front. ,
The light source constituted by a straight tube lamp is disposed through an insertion hole provided in the sub-front reflective surface,
The lighting apparatus according to claim 1, wherein the front area is illuminated with reflected light from the front reflective surface and the sub-front reflective surface.

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