JP5071799B2 - Color changer and lighting device - Google Patents

Description

  The present invention relates to a color effect lighting used for a stage, a studio, etc., and more particularly to a color changer and a lighting device capable of changing the light color.

Conventionally, in general, in a roll type color changer, detection means such as a photosensor is provided at the lower end portion of the color filter in order to stop the movement of the color filter by controlling the driving of the motor. Moreover, this detection means is arranged so that the lower end edge of the color filter is sandwiched by a U-shaped groove on the surface side in order to detect a detection piece (marker) provided on the color filter (for example, a patent Reference 1). In addition, there is a detector provided with a detection means and a detection piece in order to stop the movement of the color filter after a predetermined time has elapsed corresponding to the movement speed of the color filter (see Patent Document 2).
Japanese Patent Laid-Open No. 11-144504 Japanese Utility Model Publication No. 4-46303

  However, in the method disclosed in Patent Document 1, since the detection means is disposed so that the lower end edge of the color filter is sandwiched between the U-shaped grooves, the lower end edge of the color filter is moved along with the movement of the color filter. May come out of the groove, or the detection piece of the color filter and the groove of the detection means may come into contact with each other and be damaged by rubbing. In addition, a rubbing sound may occur due to contact. Furthermore, if a confetti paper used for production or the like is sandwiched in a U-shaped groove or dust adheres to the U-shaped groove, erroneous detection may occur, and a desired light color may not be generated due to a malfunction. Moreover, although what was shown by patent document 2 has shown the detection means and the detection piece image-wise, the specific structure is not shown. In addition, at least the detection means and the detection piece are provided at the lower end portion of the color filter, and the problem that the confetti paper or the like intervenes between the detection means and the detection piece cannot be avoided.

  Accordingly, the present invention has been made to solve the above-described problems, and can prevent the detection means and the detection piece from being damaged. In addition, the color filter position detection malfunction and the generation of sound during the color filter movement operation can be avoided. It is an object to provide a color changer and a lighting device that can be reduced.

The color changer according to claim 1 includes a main body having an irradiation opening through which light from a light source passes; and a unit color filter housed in the main body and configured by a plurality of unit color filters continuously in a strip shape. A color filter movably provided so as to cover the irradiation opening; corresponding to a region separated from the color filter on the back side of the color filter and excluding the lower end portion of the unit color filter and the light source irradiation portion A position detection unit disposed in the main body ; and a detection piece provided on the color filter so as to face the position detection unit.

  “Arranged in the main unit corresponding to the area excluding the lower end of the unit color filter” means that the unit of the main unit is used when dust or other tangible objects such as confetti are actually used in the color changer. This indicates that a position detection unit is not provided in an area having a possibility of remaining at a position facing the color filter. In the position detection, the location of the position detection unit is not particularly limited as long as it is possible to prevent the position detection from being performed due to the influence of the tangible object or the like, and the area does not affect the effect lighting. The light source irradiation unit is a portion facing the irradiation opening of the main body, and represents an irradiation image in which light from the light source is irradiated to the unit color filter through the irradiation opening of the main body.

  A color changer according to a second aspect of the present invention is the color changer according to the first aspect, wherein the position detecting means is disposed corresponding to a region of an upper corner of the unit color filter.

  The lighting apparatus according to claim 3 is a lighting apparatus comprising: an apparatus main body; a light source disposed in the apparatus main body; and a lighting device that supplies electric power to the light source. A color changer is provided.

  Providing a color changer in a lighting fixture includes detachably attaching the color changer to the lighting fixture, providing the color changer integrally, or incorporating the color changer in the lighting fixture. When the color changer is built in the lighting fixture, the member constituting the main body case of the lighting fixture may also serve as the main body of the color changer.

  According to the first aspect of the present invention, it is possible to avoid a situation in which the detection means and the detection piece are rubbed and damaged by contact, and the malfunction of the color filter position detection and the generation of sound during the color filter movement operation are prevented. A color changer that can be reduced can be provided.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, it is possible to arrange the detection means by effectively using the space.

  According to invention of Claim 3, the illuminating device which has the effect of the color changer of Claim 1 or Claim 2 can be provided.

Hereinafter, a first embodiment of a color changer of the present invention will be described with reference to FIGS. 1 to 4. 1A is a side view showing the color changer in cross section, FIG. 1B is a front view showing the color changer in cross section, and FIG. 2 is an explanatory view schematically showing the positional relationship between the color filter and the position detection means. FIG. 3 is a developed view showing a part of the color filter, and FIG. 4 is an explanatory view showing an arrangement position of the position detecting means. In FIG. 1, the color changer 1 includes a box-shaped main body 2 and a color filter 5 housed in the main body 2. A substantially circular irradiation opening 2 a through which light from the light source passes is formed on the rear surface of the main body 2. A rotating drum 3 is provided on both sides of the inner side of the rotating drum 3 so that both ends of the rotating shaft are pivotally supported. The rotating drum 3 is connected to a motor 4. Furthermore, both ends of a belt-like color filter 5 are connected to the rotating drum 3, and the color filter 5 is wound around the rotating drum 3 and rewinded according to the driving of the motor 4. The shape of the irradiation opening 2a is not limited to a circle.

  As shown with reference to FIG. 2, a reflective photosensor 6 serving as a position detecting unit has a predetermined distance from the back surface of the color filter 5 in a portion corresponding to the upper side of the back surface side of the color filter 5. Is provided. The reflection type photosensor 6 includes a light emitting element and a light receiving element as a position detection unit, and detects light by applying light from the light emitting element to a detection object and receiving reflected light by the light receiving element. The position detection means is not limited to using a reflection type photosensor, and for example, a beam sensor, a magnetic sensor, or the like may be used. Specifically, the photo sensor 6 is attached to a hanging piece 2 b cut and raised from the upper surface wall of the main body 2. The photo sensor 6 is attached at a position above the main body 2 and avoiding the irradiation opening 2a. Reference numeral 9 denotes a connection cable between the power supply line and the host controller.

In FIG. 3, the color filter 5 is a colored transparent film. A plurality of colors are divided in the longitudinal direction to form unit color filters 7-1, 7-2, 7-3..., And these unit color filters 7-1, 7-2, 7-3. Connected to form a band. The unit color filters 7-1, 7-2, 7-3,... Are, for example, a red part for transmitting light in red, a green part for green, a blue part for blue, and a transparent part for transmitting through a transmission hole as it is. Etc. are selected as necessary, and 24 sheets of 24 colors are connected in this embodiment. These unit color filters 7-1, 7-2, 7-3... Are joined together by a joint 7a. A detection piece 8 is provided above the unit color filter 7-1 on the start end side connected to the rotary drum 3, that is, the unit color filter 7-1 for the first color. The detection piece 8 is opposed to the photosensor 6 , and a tape that blocks light is used. When a magnetic sensor is used, an adhesive tape or aluminum foil on which a metal such as aluminum is deposited is used.

  In the color changer 1 configured as described above, light is irradiated from the light source disposed on the rear surface side of the main body 2 to the light source irradiation unit 5a of the color filter 5 through the irradiation opening 2a, and irradiated with a desired light color. Can illuminate the body. The light source irradiation part 5a represents the irradiation image of light with an image. These are performed by moving the color filter 5 in the longitudinal direction by driving the motor 4 and selecting the unit color filters 7-1, 7-2, 7-3,... Corresponding to the irradiation opening 2a. In the present embodiment, the portion where the detection piece 8 is provided is the origin position of the color filter 5. Therefore, when a selection signal for unit color filters 7-1, 7-2, 7-3,... Of a predetermined color is sent from the host controller to the color changer 1, the color changer 1 is first turned on when the power is turned on. The passage of the detection piece 8 is detected in advance by the photo sensor 6, and this is stored as the origin position. The positions from the origin position to the selected unit color filters 7-1, 7-2, 7-3,... Are calculated, the movement distance is calculated, and the motor 4 is driven based on the calculation result. Then, the unit color filters 7-1, 7-2, 7-3,... Of predetermined colors are arranged and selected in front of the irradiation opening 2a when the motor 4 is stopped, and a desired light color can be emitted. .

  Here, as shown by the hatched area in FIG. 4, the photosensor 6 is provided in the main body 2, but on the back side of the color filter 5 and the unit color filters 7-1, 7-2, 7. -3... Only need to be disposed corresponding to the region A excluding the lower end portion and the light source irradiation portion 5a. FIG. 4 corresponds to FIG. 1B, and the same parts as those in FIG. Specifically, in the present embodiment, the unit 2 is attached to a position corresponding to the upper corner region of the unit color filters 7-1, 7-2, 7-3,. . This portion is a relatively wide dead space above the irradiation opening 2a, that is, avoiding the light source irradiation portion 5a. Therefore, the photo sensor 6 is effectively mounted in a dead space that does not hinder the irradiation of light from the light source. Since the photosensor 6 is not provided at the lower end of the color filter and does not sandwich the detection piece as in the prior art, the photosensor 6 and the detection piece 8 are rubbed and damaged, or contact noise is generated. It never happens. Further, there is little possibility that the confetti used for production or the like will be interposed between the photosensor 6 and the detection piece 8, and even if it is interposed, it will fall down by its own weight and will not stay there.

  As described above, according to the present embodiment, the photo sensor 6 as the detection means can be provided by effectively using the dead space without obstructing the light irradiation. In addition, it is possible to provide the color changer 1 that can avoid damage to the photosensor 6 and the detection piece, and that can reduce malfunction of position detection of the color filter 5 and generation of sound during the color filter moving operation.

  In the present embodiment, the detection piece 8 is provided in the unit color filter 7-1 for the first color, the origin position is determined, and the unit color filters 7-1, 7-2, 7-3 for a predetermined color are determined. Has been described, but in the present invention, each of the unit color filters 7-1, 7-2, 7-3,... The present invention can also be applied to a method of selecting color unit color filters 7-1, 7-2, 7-3,.

  Next, a second embodiment of the color changer of the present invention will be described. Although not shown, an IC tag and a color sensor are applied to detect the position of the color filter.

  (Embodiment 1) Each unit color filter is provided with a detection piece, and in this embodiment, an IC tag is used as the detection piece. This uses a radio frequency identification (RFID (Radio Frequency Identification)) technology. The IC tag records position number information, color information, and the like of the unit color filter, and the IC tag is attached to each unit color filter. On the other hand, a reader capable of reading the information of the IC tag wirelessly is provided on the main body side. Therefore, in correspondence with the present invention and the above-described embodiment, the IC tag corresponds to the detection piece, and the reader corresponds to the position detection means.

  According to such a configuration, even if the color filter deteriorates and expands due to heat, the position number information and color information are recorded on the IC tag of each unit color filter. The selected unit color filter can be moved and controlled to a normal position (irradiation aperture position) to correct the position shift (color shift). At the same time, it is possible to notify the host controller that these positional deviations have occurred. In addition, if the selected unit color filter, that is, the IC tag cannot be detected even if the movement of the color filter is continued, the cause may be that the color filter is cut or the IC tag is peeled off from the unit color filter. In these cases, the host controller can be notified. Therefore, the defect can be corrected before the actual use in the theater or the like. Note that individual management information such as the usage time of the color filter may be recorded on the IC tag. In this case, it is effective as a standard for replacing the color filter.

  As described above, according to this embodiment, in addition to the effects of the above-described embodiment, effects such as elimination of color misregistration and correction of problems in advance can be expected.

  (Embodiment 2) A color sensor is used as position detecting means. In this case, the color of the unit color filter is detected and moved. Therefore, it is possible to control the movement of each unit color filter based on the color, and it is possible to correct the position shift (color shift) of the unit color filter as in the first embodiment, and to eliminate the color shift. Expected to be able to correct defects in advance. Further, since the color of the unit color filter is directly detected, it is possible to configure without the detection piece. In this case, simplification of the configuration can be expected.

  Next, an embodiment of the illumination device of the present invention will be described. In FIG. 5, the side view of the illuminating device which attached the color changer 1 to the spotlight 10 which is a stage lighting fixture is shown. The spotlight 10 includes a halogen bulb as a light source and a lighting device in a housing. Reference numeral 10a denotes a spotlight hanging handle. On the front surface of the spotlight 10, a color changer 1 including an outer box-shaped main body 2 that changes the color of light emitted from a light source is appropriately attached. According to this illuminating device, the illuminating device which has the effect of the color changer 1 by the said embodiment can be provided.

It is the side view and front view which show and cross-section the embodiment of the color changer of this invention. It is explanatory drawing which shows typically the positional relationship of the color filter and a position detection means. FIG. 2 is a development view showing a part of the color filter. It is explanatory drawing which shows the arrangement | positioning position of the position detection means. It is a side view which shows embodiment of the illuminating device of this invention.

Explanation of symbols

1 ... color changer, 2 ... main body, 2a ... irradiation aperture,
5 ... Color filter, 5a ... Light source irradiation unit,
6 ... position detecting means (photo sensor), 7 ... unit color filter,
8 ... detection piece, 10 ... lighting fixture (spotlight)

Claims (3)

A body having an illumination aperture through which light from the light source passes;
A color filter housed in the body and configured so that the unit color filters of a plurality of colors are continuously formed in a strip shape, and the unit color filter is movably provided so as to cover the irradiation opening;
Position detection means disposed on the main body corresponding to a region apart from the color filter on the back side of the color filter and excluding the lower end portion of the unit color filter and the light source irradiation portion;
A detection piece provided on the color filter facing the position detection means;
A color changer characterized by comprising:   2. The color changer according to claim 1, wherein the position detecting means is arranged corresponding to an upper corner area of the unit color filter. With the instrument body:
A light source disposed within the instrument body;
A lighting device for supplying power to the light source;
A lighting device comprising the color changer according to claim 1 or 2 in a lighting fixture comprising:

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