JP2007080666A - Wall surface illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wall surface illumination device in which illuminance of the wall face can be controlled nearly homogeneously even if this uses an LED as a light source. <P>SOLUTION: A plurality number of the LEDs 13 are respectively mounted on modules 12a to 12d, and the LED light sources are formed. The LED light sources formed in the modules 12a to 12d emit light in which RGB colors are combined with the plurality number of the LEDs 13. The plurality number of the modules 12a to 12d are mounted on a box 11 adjustable of a setup angle to the box 11. A light distribution control member 14 is mounted on the whole face part of the box 11, and the light distribution control member 14 controls the light distribution of the emitted light from the LED light sources, and the wall face is irradiated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wall illumination device that illuminates a background wall of a television studio or a stage.

  There is a horizont light as a wall lighting device that illuminates the background wall (horizont surface) of a television studio or stage. In this horizont light, it is required to irradiate so that the illuminance of the horizont surface, which is the irradiated surface, becomes uniform.

  Therefore, a lamp device that irradiates at a wide angle is provided at the upper part, and a lamp device that irradiates at a narrow angle is provided at the lower part. The lamp device located at the upper part has a wide angle to reduce the irradiation amount per unit area. Irradiate a relatively wide part with a short distance, and with a lamp device located at the lower part, irradiate a relatively narrow part with a long distance by narrowing the angle and increasing the irradiation amount per unit area in a spot. There is an illuminating device that irradiates a horizont surface substantially uniformly (see, for example, Patent Document 1).

On the other hand, halogen light bulbs and fluorescent lamps are used as the light source of horizont lights, and recently, those using LEDs have also been developed. An LED has a smaller light output than a halogen lamp and can output colored light as it is. On the other hand, although the halogen bulb has a large light output, it has to pass through a color filter in the case of color production. Therefore, the light loss due to the passage through the color filter is large and the illuminance is lowered. That is, although the LED has a small light output, it is possible to obtain a light output equivalent to that of a halogen light bulb in consideration of color effects. Further, a horizont light using an LED as a light source is arranged at a predetermined angle so that the entire horizont surface is irradiated as much as possible because of the high directivity of light, which is a feature of the LED.
JP-A-8-298004

  However, in a horizont light using an LED as a light source, depending on the installation condition of the horizont light, the LED as the light source cannot be arranged at an ideal distance from the wall surface, and the entire wall surface may not be irradiated with illuminance uniformly. This is because the LED has a high directivity of light and thus uneven illuminance tends to occur.

  Therefore, there is an apparatus that adjusts the direction of the emitted light of the LED by providing an angle adjustment mechanism in the apparatus body itself that houses the LED, but this adjusts the arrangement angle of the apparatus body. The orientation of the entire housed LED changes and it is difficult to adjust the illuminance on the wall surface uniformly. In particular, when illuminating the wall surface of a curved portion of a television studio or stage, reflection on the wall surface becomes reflection on the curved surface, so it is difficult to uniformly adjust the wall surface illuminance on the curved surface. Moreover, since LED has high directivity of light, colored light is not easily mixed and color unevenness is likely to occur.

  The objective of this invention is providing the wall surface illuminating device which can adjust the illumination intensity of a wall surface substantially uniformly even if it uses LED as a light source.

  The wall illumination device according to the invention of claim 1 is an LED light source capable of emitting a plurality of light colors by combining a plurality of LEDs; a module having a plurality of LEDs attached to form the LED light source; A plurality of modules arranged side by side so that the installation angle of each module can be adjusted; and a light distribution control member that controls light distribution from the LED light source and irradiates the wall surface. And

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

  The LED light source is configured by combining a plurality of light emitting diodes (LEDs). The LED light source may be a combination of a plurality of light emitting diodes (LEDs) that respectively emit R (red), G (green), and B (blue), or a plurality of light emitting elements such as R (red), G (green), and B It may be configured by combining a plurality of unit-like light emitting diode (LED) modules that emit light of three colors (blue).

  In the module, a plurality of LEDs are combined and arranged to form an LED light source. The box is attached so that a plurality of modules are arranged so that the irradiation light of the LED light source formed on the plurality of modules is directed to the wall surface of the irradiation target, and the installation angle of each module can be adjusted. That is, the LED light sources formed in the respective modules are attached so that the directions can be adjusted independently. Examples of the light distribution control member include a diffusing member that diffuses light emitted from the LED light source, a condensing lens that collects light emitted from the LED light source, and a microlens array.

  A wall surface lighting device according to a second aspect of the invention is characterized in that, in the first aspect of the invention, the intensity of RGB emitted light from the LED light source is adjusted so that unevenness of light does not occur on the wall surface.

  In the present invention, the light output of each LED is individually adjusted to reduce the unevenness of light irradiating the wall surface.

  According to the first aspect of the present invention, the installation angle of each module can be adjusted individually, and the orientation of the LED light source formed in each module can be adjusted independently, so that the illuminance of the wall surface to be irradiated is substantially uniform. Can be adjusted.

  According to the invention of claim 2, since the light output of each LED of the LED light source that emits light combined with RGB is individually adjusted, the illuminance and chromaticity can be adjusted more finely. Accordingly, it is possible to adjust the light unevenness particularly on the curved surface portion of the wall surface.

  FIG. 1 is a front view of a wall illumination device according to an embodiment of the present invention, and FIG. 2 is a side view. A plurality of modules 12 a to 12 d are attached to the box 11 of the wall lighting device 10. 1 and 2 show a case where four modules 12a to 12d are attached in the vertical direction. A plurality of LEDs 13 are arranged in each of the modules 12a to 12d. A light distribution control member 14 that controls the light distribution from the plurality of LEDs 13 is provided on the front surface of the plurality of LEDs 13.

  A plurality of LEDs 13 are respectively attached to the plurality of modules 12a to 12d to form LED light sources. The LED light source emits light combining RGB by combining a plurality of LEDs 13. The combined light of RGB may be obtained by combining a plurality of LEDs 13 that individually emit light, or a plurality of light emitting elements, three colors of R (red), G (green), and B (blue). A plurality of unit light emitting diode (LED) modules that emit combined light may be combined.

  Further, the plurality of modules 12a to 12d are provided with rotating shafts 15a1, 15a2 to 15d1 and 15d2 at both ends in the longitudinal direction, and the angle adjusting knobs 16a to 16d are provided on the rotating shafts 15a2 to 15d2 at one end. 16d is provided. The modules 12a to 12d rotate around the rotation shafts 15a1, 15a2 to 15d1, and 15d2, and the angle adjustment knobs 16a to 16d are used to adjust the light emission direction of the plurality of LEDs 13 arranged in the modules 12a to 12d. Fix it. Thereby, the light emission direction of the LED 13 is determined by the rotation angle of the modules 12a to 12d, and the light from the LED 13 is emitted in the direction determined by the rotation angle of the modules 12a to 12d. That is, each of the modules 12a to 12d can adjust the angle with the horizontal direction of the box 11 as an axis, and the light from the LED 13 is an irradiation target via the light distribution control member 14 in the angle-adjusted direction. Irradiated to the wall.

  Here, the box 11 is attached to an installation base (not shown), and the attachment angle between the box 11 and the installation base can be adjusted. As a result, the angle of the box 11 itself can be adjusted, so that the degree of freedom in adjusting the irradiation angle of the LED is increased by adjusting the angle of the box 11 and adjusting the angles of the modules 12a to 12d.

  FIG. 3 is a side view showing an example of installation angles of the modules 12a to 12d when the wall surface lighting device 10 according to the embodiment of the present invention is used as a low horizont light. The low horizon light illuminates the wall surface to be illuminated from below. In FIG. 3, the installation angle of the uppermost module 12a is increased upward, and the installation angles of the second to fourth module 12b to 12d are set upward but smaller than the installation angle of the uppermost module 12a. Shows the case.

  FIG. 4 is a schematic configuration diagram of the studio floor 17. A pit 19 is provided on the studio floor 17 along a wall surface (horizontal surface) 18, and the wall surface lighting device 10 is installed as a low horizon light in the pit 19. The wall surface lighting device 10 as a low horizon light illuminates the wall surface 18 to be illuminated from below. On the other hand, although not shown, an upper horizont light is provided on the upper part of the studio floor 17, and the wall surface lighting device 10 as the upper horizont light illuminates the wall surface 18 to be illuminated from above.

  Further, the wall surface 18 has a flat surface portion and a curved surface portion, and it is desirable that the illuminance of the flat surface portion and the curved surface portion is substantially uniform. Therefore, although not shown, a control circuit for controlling the light output of each LED 13 is provided, and the light output of each LED of the LED light source that emits light combined with RGB is individually adjusted. In particular, the light output of the LEDs that irradiate the wall surface of the curved surface portion is individually controlled, and the wall surface of the curved surface portion is kept at a substantially uniform illuminance.

  Next, FIG. 5 is a sectional view of the wall surface 18 portion of the studio floor 17 having the pits 19. FIG. 5 shows a case where the wall surface lighting device 10 is installed vertically in the pit 19 and the wall surface 18 is irradiated as a low horizont light. Each of the modules 12b to 12d can adjust the angle with the horizontal direction as an axis. Therefore, even when the installation distance from the wall surface 18 is short, the wall surface lighting device 10 is placed vertically and each module is mounted. If the installation angles of 12b to 12d are set upward, the entire wall surface can be irradiated. In this case, the wall surface illumination device 10 as a low horizont light alone cannot keep the wall surface at a uniform illuminance, so that the wall surface is kept at a substantially uniform illuminance by irradiation from the upper horizont light.

  FIG. 6 is a cross-sectional view of the wall surface 18 portion of the studio floor 17 that does not have the pit 19. FIG. 6 shows a case where the wall surface lighting device 10 is installed horizontally on the studio floor 17 and the wall surface 18 is irradiated as a low horizont light. When the studio floor 17 does not have the pit 19, the wall lighting device 10 is installed horizontally so that the wall lighting device 10, which is a low horizont light, is difficult to see from the camera or the audience. Even if the wall surface lighting device 10 is installed horizontally, each module 12b to 12d can be adjusted in angle with the horizontal direction as an axis. Therefore, the installation angle of each module 12b to 12d can be adjusted to adjust the wall surface. The whole can be irradiated. In this case as well, as in the case of the vertical installation, the wall surface illumination device 10 alone as the low horizon light cannot keep the wall surface at a uniform illuminance, so that the wall surface is almost completely irradiated by irradiation from the upper horizon light. It will maintain a uniform illuminance.

  According to the embodiment of the present invention, the installation angle of each of the modules 12a to 12d can be adjusted individually, and the direction of the LED light source formed in each of the modules 12a to 12d can be adjusted independently. It is possible to irradiate the entire wall surface without waste, and the illuminance of the wall surface 18 to be irradiated can be adjusted substantially uniformly. Moreover, since the light output of each LED of the LED light source that emits light combined with RGB can be individually adjusted, the illuminance and chromaticity can be adjusted more finely. From this, it is possible to adjust the light unevenness of the curved surface portion of the wall surface 18 in particular.

  Further, since an LED is used as a light source, power is saved, heat generation is small, and air conditioning costs of the entire studio can be reduced. Further, since colored light can be output as it is, it is not necessary to use a filter for color production, so that the workability is improved without the need to replace the filter.

The front view of the wall surface lighting apparatus concerning embodiment of this invention. The side view of the wall surface illuminating device concerning embodiment of this invention. The side view which shows an example of the installation angle of the module in the case of using the wall surface illuminating device concerning embodiment of this invention as a low horizont light. The schematic block diagram of the studio floor in which the wall surface illuminating device concerning embodiment of this invention is installed. Sectional drawing of the wall surface part of a studio floor with the pit in which the wall surface illuminating device concerning embodiment of this invention is installed. Sectional drawing of the wall surface part of the studio floor which does not have a pit in which the wall surface illuminating device concerning embodiment of this invention is installed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Wall surface illumination apparatus, 11 ... Box, 12 ... Module, 13 ... LED, 14 ... Light distribution control member, 15 ... Turning axis, 16 ... Angle adjustment knob, 17 ... Studio floor, 18 ... Wall surface, 19 ... Pit

Claims (2)

An LED light source capable of emitting a plurality of light colors by combining a plurality of LEDs;
A module in which a plurality of LEDs are mounted to form the LED light source;
A box in which a plurality of the modules are arranged side by side so that the installation angle of each module can be adjusted;
A light distribution control member that controls the light distribution from the LED light source and irradiates the wall surface;
A wall illumination device characterized by comprising: The wall surface illumination device according to claim 1, wherein the intensity of the emitted light from the LED light source can be adjusted for each LED light source.

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