JP5459654B2 - Horizont Light - Google Patents

Description

  The present invention relates to a horizont light that illuminates a background wall such as a television studio or a stage.

Conventionally, a horizont light that illuminates a background wall such as a television studio or a stage is known (for example, see Patent Document 1).
As shown in FIG. 5, in the horizontal light described in Patent Document 1, when illuminating the wall surface W, the upper part is illuminated with direct light from the light source, and the lower part is illuminated with reflected light using a reflector. In this case, since the horizon light is mounted on the ceiling side, the illuminance of the area A irradiated with direct light rapidly decreases as it goes downward from the upper end.

  Therefore, for example, a concave curve including a plurality of at least one parabolic curve and an elliptic curve is formed, and at least one of the parabolic curve and the elliptic curve is additionally connected to the concave curve to form a single composition. A curved surface was formed, and the shape of the reflecting mirror was this synthetic curved surface. Thus, the entire wall surface W is illuminated uniformly by overlapping the region A irradiated with direct light and the region B irradiated with the reflecting mirror.

JP 09-297206 A (FIG. 3)

  By the way, in recent years, a horizont light that illuminates a wall surface using an LED has been desired due to energy saving and environmental considerations. However, when a plurality of LED units each having a light distribution lens are used as the light source, there is a problem that unevenness of irradiation tends to occur on the wall surface that is the irradiation surface.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a horizont light capable of illuminating a wall surface with uniform illuminance using a plurality of LEDs as a light source.

The horizontal light of the present invention is attached to a mounted portion, and a direct light LED light source that illuminates a portion of the irradiated surface far from the mounted portion with direct light, and a portion of the irradiated surface close to the mounted portion. A reflected light that illuminates with reflected light reflected by the reflector, and a light distribution lens that constitutes the direct light LED light source is arranged on the side closer to the attached portion. The first portion is a wide-angle light distribution portion, the second portion is a medium-angle light distribution portion, and the wide-angle light distribution portion is a portion of the irradiation surface. In addition to illuminating a portion close to the mounted portion, the middle angle light distribution unit illuminates a portion of the irradiation surface far from the mounted portion, and has a configuration in which the horizontal plane cross section of the reflecting plate is uneven. .

  With this configuration, the portion of the irradiated surface that is far from the mounted portion is illuminated with direct light from the direct light LED light source, and the portion near the mounted portion of the irradiated surface is reflected by the reflecting plate from the reflected light LED light source. Illuminate with the reflected light. At this time, the light distribution lens of the direct-light LED light source irradiated to the portion of the irradiation surface far from the mounted portion is divided into a first portion close to the mounted portion and a second portion far from the mounted portion. Dividing into two, the first part was a wide-angle light distribution part and the second part was a medium-angle light distribution part. For this reason, in the part near the to-be-attached part in the part far from the to-be-attached part of an irradiation surface, since it irradiates to a wide range, illumination is suppressed and the wide range is illuminated uniformly. Further, in a portion farther from the attached portion, the illuminance is increased because the light is irradiated in a narrow range with a certain degree of directivity. Thereby, the difference of the illumination intensity in the part far from the to-be-attached part of an irradiation surface can be reduced. Furthermore, since the horizontal cross section of the reflecting plate is made uneven, the light from the LED light source for reflected light that illuminates the portion near the mounted portion of the irradiated surface is widely irradiated in the horizontal direction, and the mounted portion of the irradiated surface It is possible to uniformly irradiate a portion close to.

  The horizont light of the present invention has a configuration in which a lowermost part of the irradiation surface is illuminated with the LED light source for direct light and a light shielding plate is provided to shield the lower part of the LED light source for direct light.

  With this configuration, the lowermost part of the illumination surface is illuminated with the LED light source for direct light, and the lower part of the LED light source for direct light is shielded by the light shielding plate, thereby blocking the irradiation of light to unnecessary portions below the illumination surface. Can be illuminated.

  Furthermore, the horizon light of the present invention has a configuration in which the irradiation surface is irradiated with the light shielded by the light shielding plate through the reflecting plate.

  With this configuration, unnecessary portions below the irradiation light of the direct-light LED light source that illuminates the lowermost part of the irradiation surface are shielded by the light shielding plate, and the shielded light is reflected so as to enter the reflecting plate, and further reflected. Since the irradiation surface is irradiated through the plate, the irradiation surface can be irradiated with light from the direct light LED light source for the lowermost portion without waste.

  The present invention illuminates a portion of the irradiated surface far from the mounted portion with direct light from the LED light source for direct light, and reflects a portion of the irradiated surface near the mounted portion of the irradiated surface from the reflected light LED light source with a reflector. Illuminate with the reflected light. At this time, the light distribution lens of the direct-light LED light source irradiated to the portion of the irradiation surface far from the mounted portion is divided into a first portion close to the mounted portion and a second portion far from the mounted portion. Since the first part is a wide-angle light distribution part and the second part is a medium-angle light distribution part, the difference in illuminance in the part far from the attached part of the irradiation surface can be reduced. Furthermore, since the horizontal plane cross section of the reflector is made uneven, it is possible to provide a horizont light having the effect of being able to uniformly irradiate the portion of the irradiated surface close to the mounted portion.

The side view which shows the main structure of the horizont light concerning embodiment of this invention, and the state of illumination The front view of the LED light source of the horizontite light concerning embodiment of this invention (A) is a top view of the LED unit used for the LED light source for direct light of the horizontal light concerning embodiment of this invention, (B) is a side view, (C) is a bottom view. (A) is a perspective view of a reflector, (B) is a cross-sectional view at position BB in (A), (C) is a cross-sectional view at position CC in (A). Explanatory drawing which shows the illumination state by the conventional horizont light

Hereinafter, a horizont light according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a horizont light 10 according to an embodiment of the present invention is disposed on a floor surface 11 that is a mounting portion of a television studio, a stage, or the like, and illuminates a background wall surface 12 that is an irradiation surface. Can be used.

  The horizont light 10 reflects a direct light LED light source 21 that illuminates a portion (upper part here) of the wall surface 12 with the direct light LA1 and a portion near the floor surface 11 (here lower part) of the wall surface 12. LED light sources 22 and 23 for reflected light that are illuminated with the reflected light LB1 and LB2 reflected by the plate 25. Further, a lowermost direct light LED light source 24 for illuminating a portion of the wall surface 12 closest to the floor surface 11 (here, the lowermost portion) with the direct light LA2 is provided.

As shown in FIG. 2, a plurality of LED light sources 20 such as a direct light LED light source 21, reflected light LED light sources 22 and 23, and a lowermost direct light LED light source 24 are provided on a base plate 26 (here, for example, eight). LED unit 30 is attached, and base plate 26 is attached to square-shaped support plate 27.
Therefore, the support plate 27 is attached to the support mechanism (not shown) of the horizont light 10, and illumination is performed with the support plate 27 facing the wall surface 12 at a predetermined angle.

As shown in FIG. 3, the LED unit 30 includes an LED chip 32 mounted on, for example, a ceramic substrate 31, and a reflector 33 that includes the LED chip 32 in front (above) the LED chip 32. Is provided. A light distribution lens 34 is provided on the upper end of the reflection plate 33 so as to face the LED chip 32.
As a result, the light emitted from the LED chip 32 that is supplied with electric power from the substrate 31 passes through the light distribution lens 34 and is emitted in a predetermined direction. At this time, the light emitted from the LED chip 32 to the side is reflected by the reflecting plate 33 and enters the light distribution lens 34.

  As shown in FIG. 3, the light distribution lens 34 used for the direct light LED light sources 21 and 24 includes a first portion 341 on the side closer to the floor surface 11, which is a mounted portion, and a side far from the floor surface 11. The first portion 341 on the left side in FIG. 3 is a wide-angle light distribution unit 35, and the second portion 342 on the right side is a medium-angle light distribution unit 36. The wide-angle light distribution unit 35 can be, for example, a generally spherical light distribution lens that distributes light from the LED chip 32 widely. The medium angle light distribution unit 36 has a certain degree of directivity and distributes light in a narrower range than the wide angle light distribution unit 35.

  As shown in FIG. 3A, the middle-angle light distribution unit 36 can be configured by a plurality of lens surfaces 361, 362, and 363, for example. Each lens surface 361, 362, 363 can be configured as a spherical surface (including a plane) having a larger radius than the wide-angle light distribution unit 35. As a result, the light passing through the central lens surface 361 is emitted in the right direction in FIG. 3 with a certain degree of directivity and is a spherical lens having a large radius. Illuminate in a narrow area and with high illuminance. Further, light passing through the lens surfaces 362 and 363 on both sides is mainly emitted to the side.

  Thereby, the irradiation light of the LED unit 30 used for the LED light source 21 for direct light that illuminates the upper portion of the wall surface 12 is distributed to the upper portion of the wall surface 12 near the floor surface 11 (that is, the lower side). Since a wide range is irradiated by passing through the wide-angle light distribution unit 35 of the lens 34, the illuminance is suppressed and the wide range is uniformly illuminated. Further, a portion of the upper portion of the wall surface 12 that is far from the floor surface 11 (that is, the upper side) is irradiated with a certain range of directivity through a light distribution portion 36 of the light distribution lens 34 with a certain degree of directivity. Therefore, it is possible to compensate for a decrease in illuminance due to a long illumination distance.

  In the light distribution lens 34B (see FIG. 3) used for the LED light sources 22 and 23 for reflected light, there is no distinction between the first portion 341 and the second portion 342. That is, the second portion 342 is also formed in a generally spherical shape like the first portion 341, and the irradiation light is uniformly spread and irradiated.

As shown in FIG. 4, the reflection plate 25 includes a planar base 251 that is placed on or attached to the floor surface 11 that is a mounted portion, and a reflection portion 252 that is erected from the base 251. The inner surface of the portion 252 is a reflective surface 253. As shown in FIG. 4B, the cross section (horizontal plane cross section) shape obtained by horizontally cutting the reflecting portion 252 is, for example, a corrugated member formed of a large number of irregularities 254. As shown in FIG. 4C, a cross section obtained by cutting the reflecting portion 252 up and down has a curved shape combining ellipses, parabolas, and the like.
Therefore, the light irradiated to the reflective surface 253 from the LED light sources 22 and 23 for reflected light is reflected by the unevenness 254, spreads in the horizontal direction, and is reflected. Further, the light is reflected in a predetermined direction in the vertical direction according to the curved surface shape of the reflection surface 253.

  As shown in FIG. 1, in front of the lowermost direct light LED light source 24 that directly illuminates the lowermost part of the wall surface 12 with direct light, the lower part of the irradiation light from the lowermost direct light LED light source 24 is shielded. A plate 28 is provided. As described above, in the light distribution lens 34 of the LED unit 30 used in the direct light LED light sources 21, 22, 24, the first portion 341 on the lower side is the wide-angle light distribution unit 35. In addition, the light emitted through the wide-angle light distribution unit 35 is shielded by the light shielding plate 28. Then, only the light passing through the upper second portion 342 that is the middle-angle light distribution portion 36 in the light distribution lens 34 is irradiated onto the wall surface 12.

  The surface of the light shielding plate 28 that faces the lowermost direct light LED light source 24 is a reflective surface 281, and the light emitted through the wide-angle light distribution unit 35 is reflected by the reflective surface 281 (in FIG. 1). The reflected light is incident on the reflection surface 253 of the reflection plate 25. Then, the reflected light LA3 is reflected by the reflecting surface 253 and irradiated to the wall surface 12.

  As described above, according to the horizontal light 10 according to the embodiment of the present invention, the upper part of the wall surface 12 far from the floor surface 11 is illuminated by the direct light from the LED light source 21 for direct light. At this time, the light distribution lens 34 of the LED light source 21 for direct light irradiated on the upper surface of the wall surface 12 is divided into a first part 341 on the lower side and a second part 342 on the upper side. The part 341 is a wide-angle light distribution part 35 and the second part 342 is a medium-angle light distribution part 36.

  For this reason, since the relatively lower part in the upper part of the wall surface 12 is irradiated over a wide range by the irradiation light passing through the wide-angle light distribution part 35, the illuminance is suppressed and the wide range is uniformly illuminated. In addition, the upper portion of the upper surface of the wall surface 12 is irradiated to a narrow range with a certain degree of directivity by the irradiation light passing through the middle angle light distribution unit 36, so that it is far from the direct light LED light source 21. It can compensate for the decrease in illuminance.

Moreover, since the lower part of the wall surface 12 near the floor surface 11 is illuminated with the reflected light LB1 and LB2 obtained by reflecting the light from the reflected light LED light sources 22 and 23 with the reflecting plate 25, the difference in illuminance at the lower part of the wall surface 12 is obtained. Can be reduced.
Furthermore, since the horizontal cross section of the reflector 25 is made uneven, the light from the reflected light LED light sources 22 and 23 that illuminates the lower portion of the wall surface 12 is widely irradiated in the horizontal direction, and the lower portion of the wall surface 12 is uniformly irradiated. can do.

  Further, the lowermost portion of the wall surface 12 is illuminated by the lowermost direct light LED light source 24 and the lower portion of the lowermost direct light LED light source 24 is shielded by the light shielding plate 28, so that the lowermost direct light LED light source 24 is configured. The irradiation light passing through the wide-angle light distribution unit 35 of the LED unit 30 is shielded. For this reason, it is possible to illuminate by blocking the irradiation of light to unnecessary portions at the bottom of the wall surface 12.

  Further, since the light shielded by the light shielding plate 28 is reflected so as to enter the reflecting plate 25 and is further applied to the wall surface 12 via the reflecting plate 25, the light from the LED light source 24 for the lowermost direct light is not wasted. The wall surface 12 can be irradiated.

Note that the horizontlite 10 of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.
For example, in the horizont light 10 according to the above-described embodiment, the case where the horizont light 10 is used while being attached to the floor surface 11 is exemplified, but the present invention is also applicable to the case where it is used while being attached to the ceiling.

  In the LED unit 30 described above, the case where the medium angle light distribution unit 36 is configured by the three lens surfaces 361 to 363 has been described. However, the configuration of the medium angle light distribution unit 36 is not limited thereto. For example, the medium angle light distribution unit 36 may be configured by a larger number of lens surfaces. In this case, the boundary between adjacent lens surfaces can be blurred, and more uniform illumination can be achieved.

  Further, in the above-described horizont light 10, there is provided a case where one direct light LED light source 21, two reflected light LED light sources 22, 23, and one bottom direct light LED light source 24 are provided. Although illustrated, the number and arrangement of each light source are not limited to this.

10 Horizont light 11 Floor (attached part)
12 Wall surface (irradiated surface)
21 LED light source for direct light 22, 23 LED light source for reflected light 24 Bottom LED light source for direct light (LED light source for direct light)
25 Reflecting plate 254 Concavity and convexity 28 Shading plate 34 Light distribution lens 341 First portion 342 Second portion 35 Wide angle light distribution portion 36 Medium angle light distribution portion

Claims (3)

An LED light source for direct light that is attached to a mounted portion and illuminates a portion of the irradiated surface that is far from the mounted portion with direct light, and a reflection that reflects a portion near the mounted portion of the irradiated surface with a reflector. A horizont light having an LED light source for reflected light illuminated with light,
The light distribution lens constituting the LED light source for direct light is divided into a first portion closer to the attached portion and a second portion farther from the attached portion, and the first portion is a wide-angle light distribution portion. , The second part is a medium angle light distribution part,
The wide-angle light distribution unit illuminates a portion near the attached portion of the irradiation surface, and the medium-angle light distribution portion illuminates a portion far from the attachment portion of the irradiation surface,
A horizontal light having a concavo-convex shape in a horizontal cross section of the reflector.   2. The horizont light according to claim 1, further comprising a light shielding plate that illuminates a lowermost portion of the irradiation surface with the LED light source for direct light and shields a first portion of the LED light source for direct light.   The horizont light according to claim 2, wherein the irradiation surface is irradiated with light shielded by the light shielding plate through the reflection plate.

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