JP2015005437A - Light distribution control device and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light distribution control device capable of easily adjusting light distribution control depending on a light performance.SOLUTION: A light distribution control device 12 includes an attachment part 22, and light distribution control means 23 that is attached to the attachment part 22. The attachment part 22 has an opening 28 through which light from a light source 16 passes. The light distribution control means 23 has a plurality of light distribution control surfaces 38 different in optical reflectance, and the light distribution control surfaces 38 facing the light passing through the opening 28 can be switched.

Description

  Embodiments described herein relate generally to a light distribution control device that controls light distribution and a lighting fixture that uses the light distribution control device.

  Conventionally, lighting fixtures such as spotlights have been used to produce light in studios and the stage.

  In such a lighting fixture, in the case of light distribution control that restricts the light irradiation range in terms of light production, the banders are swingably arranged on the upper, lower, left, and right sides of the emission outlet that emits the light of the fixture body. A band door device is attached.

  Moreover, in such a lighting fixture, in the case of light distribution control for which it is desired to increase the illuminance as much as possible in terms of light production, the reflector device in which reflectors are arranged on the upper, lower, left and right sides of the exit port for emitting the light of the fixture body, respectively. Is attached.

JP 2013-26137 A

  In the case of light distribution control that restricts the light irradiation range for lighting effects, a luminaire with a bundling device is used, and in the case of light distribution control that increases illuminance, a reflector device is attached. Lighting equipment is used.

  However, when the lighting effect is changed, it is necessary to replace the bundling device and the reflector device with respect to the fixture body, or to change the lighting fixture itself. Adjustment could not be performed easily.

  The problem to be solved by the present invention is to provide a light distribution control device and a luminaire that can easily adjust light distribution control according to the effect of light.

  The light distribution control device of the embodiment includes an attachment portion and a light distribution control means. The attachment portion has an opening through which light from the light source passes. The light distribution control means has a plurality of light distribution control surfaces attached to the attachment portion and having different light reflectivities, and enables switching of the light distribution control surfaces facing the light passing through the opening.

  According to the present invention, the light distribution control means has a plurality of light distribution control surfaces having different light reflectivities, and can switch the light distribution control surface facing the light passing through the opening. It can be expected that adjustment of light distribution control such as limiting the range of light irradiation or increasing the illuminance can be easily performed only by the control means.

It is a side view of the unfolded state of the light distribution control means of the light distribution control apparatus which shows one Embodiment. It is a side view of the folded state of a light distribution control means same as the above. It is explanatory drawing which shows the pattern of the light distribution control surface formed in a light distribution control means same as the above (a)-(f).

  Hereinafter, an embodiment will be described with reference to FIGS. 1 to 3.

  1 and 2, a lighting fixture 10 is, for example, a spotlight used to produce light in a studio or a stage, and includes a fixture main body 11 and a light distribution control device 12 attached to the fixture main body 11. ing.

  The instrument body 11 is formed in a cylindrical shape having an emission port for emitting light on the front surface. A light source 16 is disposed in the fixture body 11 so as to face the emission port 15, and a reflector that reflects light from the light source 16 and light from the light source 16 are collected between the emission port 15 and the light source 16. An optical component such as a lens is arranged.

  The light source 16 includes a substrate 17 and a light emitting unit 18 formed on the substrate 17. For the light emitting unit 18, for example, light emitting elements such as a plurality of LEDs and EL elements are used.

  Then, on the optical axis 19 of the lighting fixture 10, the fixture main body 11, the light source 16, and the center of the optical component are arranged so as to coincide with each other.

  The light distribution control device 12 includes an attachment portion 22 attached to the front surface of the instrument body 11 and a light distribution control means 23 attached to the attachment portion 22.

  The mounting portion 22 includes a mounting portion main body 25 that is attached to the instrument main body 11, a rectangular frame-shaped mounting frame 26 that is disposed in front of the mounting portion main body 25, and upper, lower, left, and right sides of the mounting frame 26. An attachment member 27 attached to 25 is provided. The mounting portion main body 25 is formed in a cylindrical shape having an opening 28 that faces the emission port 15 of the instrument main body 11 and through which light emitted from the emission port 15, that is, light from the light source 16, passes. Further, between the attachment portion main body 25 and the attachment frame 26, there is a filter attachment portion 29 through which light passing through the opening 28 is transmitted and a filter for changing the color of light or changing the light distribution is detachably attached. Is formed.

  The light distribution control means 23 includes a first blade 31 attached to each of the upper, lower, left and right sides of the attachment frame 26, and a second blade 32 attached to the tip of each first blade 31. The first blade 31 is connected by a first connecting member 33 that can be rotated with respect to the mounting frame 26 and can be held at the rotating position. The second blade 32 is connected to the first blade 31 by a second connecting member 34 such as a torque hinge that can rotate with respect to the first blade 31 and can be held at the rotation position. It is possible to rotate between the unfolded state extended from the surface and the folded state folded on the surface side of the first blade 31 facing the optical axis 19.

  All of the first blades 31 and the second blades 32 may be formed in a square shape, and the tips on the blade side attached to at least one of the left and right or the top and bottom of the mounting frame 26 are tapered. The first blade 31 and the second blade 32 may be made closer to each other so that the opening size between the blades can be reduced.

  A first surface 35 that faces the optical axis 19 is formed on the first blade 31. The second blade 32 includes a second surface 36 that faces the optical axis 19 in the unfolded state where the second blade 32 is extended from the first blade 31, and a side opposite to the second surface 36. Thus, it has a third surface 37 that faces the optical axis 19 in a folded state in which the first surface 35 is folded by the first blade 31.

  On the first surface 35 of the first blade 31, the second surface 36 and the third surface 37 of the second blade 32, a light distribution control surface 38 having different light reflectivities is formed. In the present embodiment, the first surface 35 of the first blade 31 is formed on a reflection surface (high reflection surface) R such as a mirror surface or a diffusion surface having a high light reflectance. The second surface 36 and the third surface 37 of the second blade 32 are formed on a non-reflection surface (low reflection surface) B such as a matte black surface having a lower reflectance than the first surface 35. . Therefore, the 1st blade | wing 31 is comprised by the reflecting plate (high reflecting plate), and the 2nd blade | wing 32 is comprised by the non-reflecting plate (low reflecting plate).

  The luminaire 10 thus configured is used by being installed in a baton suspended from the ceiling side of a studio or a stage, for example.

  In the case of light production in the studio or the stage, when it is desired to perform light distribution control to increase the illuminance of the subject while limiting the light irradiation range, as shown in FIG. The state is unfolded from the blade 31, the reflecting surface R of the first blade 31 is opposed to the optical axis 19, and the angles of the first blade 31 and the second blade 32 are varied to irradiate light. Adjust direction and range.

  When the light source 16 is turned on, the light from the light source 16 passes through the emission port 15 of the instrument body 11 and the opening 28 of the mounting portion 22, and further, the four first blades 31 and the second blades of the light distribution control means 23. The light is emitted toward the subject through the blades 32.

  Part of the light that has passed through the opening 28 of the attachment portion 22 is incident on the reflection surface R of the first blade 31 and is reflected toward the subject.

  Part of the light that has passed through the opening 28 of the mounting portion 22 is incident on the non-reflecting surface B of the second blade 32 and absorbed, and is blocked from the subject.

  In this case, the light distribution control device 12 is in a usage situation having both the function of a general reflector device and the function of a band door device, and can increase the illuminance of the subject while restricting the light irradiation range.

  Further, in the case of performing light distribution in the studio or the stage, when it is desired to perform light distribution control that surely limits the light irradiation range, the second blade 32 is replaced with the first blade 31 as shown in FIG. In a folded state, the second blade 32 covers the reflective surface R of the first blade 31 and the non-reflective surface B (third surface 37) of the second blade 32 faces the optical axis 19. The angle of the second blade 32 is integrally changed together with the first blade 31 to adjust the direction and range of light irradiation.

  When the light source 16 is turned on, the light from the light source 16 passes through the emission port 15 of the instrument body 11 and the opening 28 of the mounting portion 22, and further passes through the second blades 32 on the four sides of the light distribution control means 23. Irradiated towards.

  Part of the light that has passed through the opening 28 of the mounting portion 22 is incident on the non-reflecting surface B of the second blade 32 and absorbed, and is blocked from the subject.

  In this case, the light distribution control device 12 is in a usage situation as a general band door device, and more reliably limits the light irradiation range than the usage situation in which the reflecting surface R is used as shown in FIG. Can do.

  Also, if the lighting effect in the studio or the stage is changed, or if the light distribution control of the lighting device 10 does not match the lighting effect, the lighting device 10 remains attached to the baton. The blade 32 is rotated to expose the reflective surface R of the first blade 31 or the reflective surface R of the first blade 31 is covered with the second blade 32, thereby arranging as shown in FIG. Easy switching to light control.

  Thus, in the light distribution control device 12, the light distribution control means 23 has a plurality of light distribution control surfaces 38 having different light reflectivities, and the light distribution control unit 23 faces the light (optical axis 19) passing through the opening 28. In order to enable switching of the light control surface 38, it is possible to easily adjust the light distribution control by limiting the light irradiation range or increasing the illuminance according to the light effect only by the light distribution control means 23. Can do.

  The light distribution control means 23 includes a first blade 31 attached to the attachment portion 22 and a second blade 32 whose amount of protrusion from the first blade 31 is variable. Since the light distribution control surface 38 is formed on the second blade 32, the light distribution control can be easily adjusted by changing the length of the second blade 32 protruding from the first blade 31. it can.

  FIG. 3 shows an example of the pattern of the light distribution control surface 38 formed in the light distribution control means 23 with different light reflectance.

  FIG. 3A is an example of the above embodiment, in which the first surface 35 of the first blade 31 is the reflecting surface R, the second surface 36 and the third surface 37 of the second blade 32 are the surface. The non-reflective surface B is used.

  In FIG. 3B, the first surface 35 of the first blade 31 is the reflective surface R, the second surface 36 of the second blade 32 is the reflective surface R, and the third surface 37 is the non-reflective surface B. It is possible to increase the illuminance in the deployed state.

  In FIG. 3C, the first surface 35 of the first blade 31 is the reflection surface R, the second surface 36 of the second blade 32 is the non-reflection surface B, and the third surface 37 is the reflection surface R. It is possible to change the light irradiation range between the expanded state and the folded state while increasing the illuminance in both the expanded state and the folded state.

  FIG. 3D shows the first surface 35 of the first blade 31 as the non-reflecting surface B, the second surface 36 of the second blade 32 as the non-reflecting surface B, and the third surface 37 as the reflecting surface. R is used to more reliably limit the light irradiation range in the unfolded state, and can be used as a general reflector device in the folded state.

  FIG. 3 (e) shows that the first surface 35 of the first blade 31 is a non-reflective surface B, the second surface 36 of the second blade 32 is a reflective surface R, and the third surface 37 is a non-reflective surface. In the unfolded state, the illuminance is increased while limiting the light irradiation range, and in the folded state, it can be used as a general band door device.

  3 (f) shows that the first surface 35 of the first blade 31 is the non-reflecting surface B, the second surface 36 of the second blade 32 is the reflecting surface R, and the third surface 37 is the reflecting surface R. In the unfolded state, the illuminance is increased while limiting the light irradiation range, and in the folded state, it can be used as a general reflector device.

  In the embodiment, the second blade 32 is connected to the first blade 31 so as to be rotatable (foldable). However, the second blade 32 is slidably connected, and the second blade 32 is connected to the first blade 31. The first surface 35 may be overlapped and covered.

  The light distribution control means 23 is composed of two blades, the first blade 31 and the second blade 32, but is composed of three or more blades, and each surface of each blade has a different light reflectance. The light distribution control surface 38 may be appropriately formed.

  Further, the light distribution control means 23 uses only one blade, one surface of the blade is a reflection surface R, and the other surface is a non-reflection surface B, and the reflection surface R and the non-reflection surface with respect to the mounting portion 22. You may rotate so that B may turn over.

  Further, the light distribution control surfaces 38 having different reflectances are not limited to the two types of the reflective surface R and the non-reflective surface B. You may make it switch suitably.

  Further, the attachment portion 22 of the light distribution control device 12 may be the instrument body 11.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
11 Instrument body
12 Light distribution controller
16 Light source
22 Mounting part
23 Light distribution control means
28 opening
31 First feather
32 Second feather
38 Light distribution control surface

Claims (3)

A mounting portion having an opening through which light from the light source passes;
A light distribution control means attached to the attachment portion and having a plurality of light distribution control surfaces having different light reflectivities, and capable of switching light distribution control surfaces facing light passing through the aperture;
A light distribution control device comprising: The light distribution control means has a first blade attached to the attachment portion and a second blade whose amount of protrusion from the first blade is variable, and the light distribution control surface is provided on the first blade and the second blade. The light distribution control device according to claim 1, wherein: An instrument body having a light source and emitting light from the light source;
The light distribution control device according to claim 1 or 2, wherein a mounting portion is attached to the instrument body so that light emitted from the instrument body passes through the opening;
The lighting fixture characterized by comprising.

Images