JP2011187244A - Led unit, and horizontal light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED unit and a horizontal light capable of performing illumination so that illuminance of an illuminated wall face may become uniform. <P>SOLUTION: Since light emitted from respective LED chips 35 is irradiated in a wide range by passing through a wide angle light distributing part 37 of a first part 361 of a light distributing lens 36 in a portion near a mounting part 11, the wide range is uniformly illuminated by suppressing the illuminance. Moreover, in a part distant from the mounting part 11, since the light passes through a middle angle light distributing part 38 of a second portion 362 of the light distributing lens 36 and is irradiated in a narrow range with certain directivity, the illuminance increases. For that reason, when illuminating a wall face 12, since the light which has passed through the middle angle light distributing portion 38 of the second part 362 of the LED unit 32 arranged on a site near the mounting part 11 and the light which has passed through the wide angle light distributing part 37 of the first part 361 of the LED unit 32 arranged on the side far from the mounting part 11 are sequentially overlapped, the wall face 12 can be illuminated uniformly as a whole. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an LED unit and a horizont light suitable for illuminating a background wall such as a television studio or a stage.

2. Description of the Related Art Conventionally, a horizont light that illuminates a background wall such as a television studio or a stage uses an LED as a light source (see, for example, Patent Document 1).
As shown in FIG. 8, in the wall surface lighting device 100 described in Patent Document 1, a plurality of modules 102 a to 102 d are attached in a vertical direction inside a casing 101, and each of the modules 102 a to 102 d has a plurality of modules. LEDs 103 are arranged. A light distribution control member 104 that controls the light distribution from the LEDs 103 is provided on the front surface of the plurality of LEDs 103. The plurality of modules 102a to 102d are provided with rotation shafts 105a to 105d at both ends in the longitudinal direction, and the light emission directions of the modules 102a to 102d are adjusted and fixed.

  FIG. 9 shows a state in which the wall surface lighting device 100 described above is used as a horizont light that illuminates the wall surface 108 portion of the studio floor 107 having the pits 106. That is, the wall surface lighting device 100 is installed vertically in the pit 106, and the wall surface 108 is irradiated by changing the emission direction of the modules 102a to 102d.

JP 2007-80666 A (FIGS. 1 and 5)

  However, in the conventional wall lighting device (horizontal light) 100 as described above, the lower module 102a illuminates the lower portion of the wall surface 108 because it faces the wall surface 108 approximately. Moreover, since the emission direction is upward as it goes to the upper modules 102b to 102d, the wall surface 108 to be illuminated becomes far and the light is emitted obliquely with respect to the wall surface 108, so that the upper illumination becomes dark and the wall surface 108 becomes darker. There was a problem that the illuminance was not uniform.

  The present invention has been made to solve the conventional problems, and an object thereof is to provide an LED unit and a horizont light that can be illuminated so that the illuminance of a wall surface to be illuminated becomes uniform.

  The LED unit of the present invention is an LED unit that includes an LED chip and a light distribution lens disposed to face the LED chip, and the light distribution lens is divided into a first part and a second part. The first part is divided into a wide-angle light distribution part, and the second part is made into a medium-angle light distribution part.

  The horizont light of the present invention is a horizont light that illuminates a wall surface by being attached to a mounted part, and includes an LED chip and a light distribution lens disposed to face the LED chip. Are arranged in such a manner that the LED unit located on the side farther from the attached portion illuminates the side farther from the attached portion, and the light distribution lens is arranged on the first side closer to the attached portion. And the second part on the far side, and the first part is a wide-angle light distribution part and the second part is a medium-angle light distribution part.

  In the present invention, the light emitted from each LED chip is irradiated to a wide range by passing through the wide-angle light distribution part of the first part of the light distribution lens in the part close to the attached part, thereby suppressing the illuminance. And uniformly illuminate a wide area. Further, in a portion far from the attached portion, the light is irradiated to a narrow range with a certain degree of directivity through the middle angle light distribution portion of the second portion of the light distribution lens, so that the illuminance increases. For this reason, when illuminating the wall surface, the light that has passed through the middle-angle light distribution part of the second part of the LED unit that is arranged on the side close to the attached part, and the LED that is arranged on the side far from the attached part Since the light that has passed through the wide-angle light distribution portion of the first part of the unit overlaps one after another, it is possible to provide a horizont light that has the effect of uniformly illuminating the wall surface as a whole.

(A) The perspective view which looked at the horizontite concerning embodiment of this invention from the upper part, (B) The perspective view seen from the lower part (A) A side view of a horizont light according to an embodiment of the present invention, (B) a front view, (C) a rear view, (D) a plan view The perspective view which looked at the LED unit concerning embodiment of this invention from the upper direction (A) Top view of LED unit concerning embodiment of this invention, (B) Side view, (C) Bottom view Graph showing luminance distribution The perspective view which looked at another example of the LED unit concerning the embodiment of the present invention from the upper part (A) Top view which shows another example of the LED unit concerning embodiment of this invention, (B) Side view, (C) Bottom view Front view showing a conventional wall lighting device Explanatory drawing which shows the state of the illumination by the conventional wall surface illuminating device

Hereinafter, a horizont light according to an embodiment of the present invention will be described with reference to the drawings.
1A is a perspective view of a horizont light according to an embodiment of the present invention as viewed from above, FIG. 1B is a perspective view of the horizont light as viewed from below, and FIG. 2A is a perspective view of a horizont light according to an embodiment of the present invention. Side view, (B) is a front view, (C) is a rear view, (D) is a plan view, FIG. 3 is a perspective view of an LED unit according to an embodiment of the present invention as viewed from above, and FIG. The top view of the LED unit concerning embodiment of this invention, (B) is a side view, (C) is a bottom view.

  As shown in FIGS. 1 and 2, the horizont light 10 is attached to a floor surface or ceiling (here, the floor surface 11) that is a mounting portion of a television studio or a stage and illuminates a wall surface 12 as a background. (See FIG. 2A).

  The horizont light 10 has a substantially trapezoidal housing 20 and has an opening 22 on the front surface facing the wall surface 12 in a state where one inclined surface 21 is placed on the floor surface 11 which is a mounted portion. A hinge 23 is attached to the front end of one slope 21, and an illumination plate 30 covering the opening 22 is attached to the hinge 23 so as to be opened and closed. In addition, a fixing tool 25 for fixing the horizont light 10 is provided on the bottom surface 24 facing the opening 22 of the housing 20.

  The illumination plate 30 has a surface 301 curved forward. Therefore, the lower surface 301 of the surface 301 is closer to the wall surface 12 and the upper portion is far from the wall surface 12. Further, the lower part is nearly parallel to the wall surface 12, and the upper part is nearly perpendicular to the wall surface 12. A plurality of LED light sources 31 are provided on the surface 301. Here, for example, twelve LED light sources 31 are provided in three rows horizontally and four steps vertically. The LED light source 31 has a lowermost stage as a first LED light source 311, a second LED light source 312 and a third LED light source 313 in order, and an uppermost stage as a fourth LED light source 314.

  The LED light source 31 attached to the surface 301 of the curved illuminating plate 30 is the attached portion, and the LED light source 31 located on the side far from the floor surface 11 (ie, the upper portion of the illuminating plate 30) is the attached portion. It is attached so as to illuminate the side far from the floor surface 11 (that is, the upper side).

  Accordingly, the first LED light source 311 attached to the lower part on the floor 11 side is closest to the wall surface 12 and is the most directly facing (when orthogonal to the wall surface 12, that is, when θ = 0. FIG. The wall surface 12 is irradiated in a state close to that shown in FIG. Then, the LED light source 31 moves away from the wall surface 12 as it goes up, and is far from the facing state, and therefore irradiates the wall surface 12 at a large angle θ. Therefore, the fourth LED light source 314 is farthest from the wall surface 12 and has the largest irradiation angle θ.

Each LED light source 31 has a plurality (e.g., eight) of LED units 32, and an aluminum reflector 303 is provided on each side of each LED light source 31 in the horizontal direction. Thereby, the light from the LED light sources 31 in each row is irradiated with a predetermined width in the horizontal direction.
Note that a filter presser 302 is provided at each of the upper end portion and the lower end portion of the illuminating plate 30, and for example, a filter that changes the color of light from the LED light source 31 can be detachably attached.

As shown in FIGS. 3 and 4, the LED unit 32 includes an LED chip 35 mounted on, for example, a ceramic substrate 34, and the LED chip 35 is included in front (above) the LED chip 35. A reflection plate 37 is provided. A light distribution lens 36 is provided on the upper end of the reflection plate 37 so as to face the LED chip 35.
As a result, the light emitted from the LED chip 35 supplied with power from the substrate 34 passes through the light distribution lens 36 and is emitted in a predetermined direction. At this time, the light emitted from the LED chip 35 to the side is reflected by the reflecting plate 303 and enters the light distribution lens 36.

  As shown in FIG. 4, the light distribution lens 36 is divided into a first part 361 and a second part 362. The first part 361 on the left side in FIG. The second portion 362 is a medium angle light distribution unit 38. The wide-angle light distribution unit 37 can be, for example, a generally spherical light distribution lens that distributes light from the LED chip 35 widely. The medium-angle light distribution unit 38 has a certain degree of directivity and distributes light in a narrower range than the wide-angle light distribution unit 37.

  As shown in FIG. 4A, the middle-angle light distribution unit 38 can be constituted by a plurality of lens surfaces 381, 382, 383, for example. Each lens surface 381, 382, 383 can be configured as a spherical surface having a larger radius than the wide-angle light distribution unit 37. As a result, the light passing through the central lens surface 381 is emitted to the right with a certain degree of directivity and is a spherical lens having a large radius, so that it is in a narrower range than the light passing through the wide-angle light distribution unit 37. And illuminate with high illuminance. Further, light passing through the lens surfaces 382 and 383 on both sides is emitted mainly to the side.

  Thereby, a luminance distribution as shown in FIG. 5 is obtained.

  The LED unit 32 used in the LED light source 31 of the horizont light 10 described above with reference to FIGS. 1 and 2 has a wide-angle light distribution portion 37 disposed on the attached portion side, that is, the lower side that is the floor surface 11 side, and a medium-angle light distribution. The portion 38 is used by being disposed on the opposite side to the attached portion, that is, on the upper side opposite to the floor surface 11 (see FIGS. 3 and 4).

  Thereby, in each LED unit 32, in the part close | similar to the floor surface 11, since it irradiates a wide range by passing the wide angle light distribution part 37 of the light distribution lens 36, the illumination intensity is suppressed and a wide range is made uniform. Illuminate. Further, in a portion far from the floor surface 11, the light is irradiated to a narrow range with a certain degree of directivity through the middle-angle light distribution portion of the light distribution lens 36. Can be supplemented.

  The same LED unit 32 can be used for each LED light source 31. Further, the same LED light source 31 can be used as the first LED light source 311 to the fourth LED light source 314, but different LED light sources can also be used. For example, the LED unit 32 having the same spherical light distribution lens 36 as the conventional one is used for the first LED light source 311 close to the floor surface 11 that is the mounted portion, and the second LED light source 312 and the third LED light source 313 have inner surfaces. It is also possible to use the LED unit 32 having the textured light distribution lens 36 and the fourth LED light source 314 to use the LED unit 32 having the above-described medium angle light distribution unit 38.

  As described above, according to the LED unit 32 according to the present invention described above, the light emitted from the LED chip 35 passes through the wide-angle light distribution unit 37 provided in the first portion 361 of the light distribution lens 36, thereby generating illuminance. Since the light is uniformly irradiated over a wide range and the medium angle light distribution unit 38 provided in the second portion 362 is passed through the narrow angle range with a certain degree of directivity, The irradiation range is different between above and below. Accordingly, the illuminance of the irradiation range is different between above and below.

  In addition, according to the horizont light 10 according to the present invention using the LED light source 31 having the LED unit 32 described above, the light emitted from each LED light source 31 is transmitted through the light distribution lens 36 in a portion close to the floor surface 11. Since a wide range is irradiated by passing through the wide-angle light distribution unit 37 of the first portion 361, it is possible to uniformly illuminate the wide range while suppressing the illuminance. Further, in a portion far from the floor surface 11, since the light is irradiated to a narrow range with a certain degree of directivity through the middle angle light distribution portion 38 of the second portion 362 of the light distribution lens 36, the illuminance increases. it can.

  For this reason, when illuminating the wall surface 12, the light that has passed through the middle angle light distribution portion 38 of the second portion 362 of the LED unit 32 used in the LED light source 31 disposed on the side close to the floor surface 11 Since the light that has passed through the wide-angle light distribution portion 37 of the first portion 361 of the LED unit 32 used in the LED light source 31 adjacent to the far side from the floor surface 11 overlaps one after another, the wall surface 12 is made uniform as a whole. Can be illuminated.

The LED unit 32 and the horizon light 10 of the present invention are not limited to the above-described embodiments, 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 32 described above, the case where the medium angle light distribution unit 38 is configured by the three lens surfaces 381 to 383 has been described. However, the configuration of the medium angle light distribution unit 38 is not limited thereto. For example, like the LED unit 32 </ b> B shown in FIGS. 6 and 7, the medium angle light distribution unit 38 can be configured with five lens surfaces 384 to 388. In this case, since the lens surfaces 387 and 388 are further provided at the boundary between the lens surface 384 and the lens surfaces 385 and 386, the boundary of the light passing through the lens surfaces 384 to 388 can be blurred and more uniformly. Can be illuminated. 3 and FIG. 4, parts that are the same as those of the LED unit 32 described above are denoted by the same reference numerals, and redundant description is omitted.

10 Horizont light 11 Floor (attached part)
DESCRIPTION OF SYMBOLS 12 Wall surface 32 LED unit 35 LED chip 36 Light distribution lens 361 1st part 362 2nd part 37 Wide angle light distribution part 38 Medium angle light distribution part

Claims (2)

An LED chip;
A light distribution lens disposed opposite to the LED chip, and an LED unit comprising:
Dividing the light distribution lens into a first part and a second part;
The first part is a wide-angle light distribution part,
An LED unit characterized in that the second part is a medium angle light distribution part. A horizont light that is attached to a mounted portion and illuminates a wall surface,
A plurality of LED units each including an LED chip and a light distribution lens disposed to face the LED chip are disposed in the vertical direction, and the LED unit located on the side far from the attached portion is Provided to illuminate the side farther from the attached part,
The light distribution lens is divided into a first portion closer to the attached portion and a second portion farther from the attached portion, the first portion is a wide-angle light distribution portion, and the second portion is a medium angle Horizont light characterized by light distribution.

Images