JPH06260005A - Device for controlling irradiation direction of spotlight - Google Patents

Abstract

PURPOSE:To obtain a device for making a spotlight automatically track a moving article. CONSTITUTION:A moving article 11 is made to have a transmitter 16 for generating the electric wave, and a first receiver and a second receiver 17-2, which are provided separately from each other, and a position detection converting circuit 19 for receiving that electric wave to control the direction of a spotlight are provided to make a spotlight always track the moving article 11 so that the irradiation direction of the spotlight can point a position of the moving article 11. A device for controlling the irradiation direction of the spotlight, which can apply the spotlight to the moving article 11 effectively and accurately, and furthermore, which can save the lighting labor sufficiently, is thereby obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spotlight irradiation direction control device for effectively irradiating a spotlight on a moving person or moving object on a stage such as a theater or a wedding hall.

[0002]

2. Description of the Related Art For example, it is very common to illuminate an actor or the like on a stage of a theater or the like with a spotlight. As a conventional irradiation means for irradiating a human body (hereinafter referred to as a moving object) with a spotlight, for example, as shown in FIG. 1, a remote control system for wirelessly controlling the irradiation direction of the spotlight 1, and FIG. As shown in, a remote control method of operating by wire is adopted.

That is, the wireless remote control is
An operator (operator) 2 who controls the spotlight has a transmitter 3, and the spotlight 1 is provided with a receiver 4 and a position control drive unit 5, and the spotlight 1 is wirelessly operated by the worker. Is controlled to a desired position.

In the wired remote control shown in FIG. 2, the operator 2 operates the controller 6 installed at a specific place, and the operation signal is input to the spotlight drive unit 8 by the wire 7. Then, the orientation of the spotlight 1 is controlled.

[0005]

However, both of the above-mentioned wireless remote control and wired remote control require an operator for driving and adjusting the spotlight. Further, since there is a distance between the driving adjustment position by the operator and the moving object, it is difficult to accurately align the central part of the spotlight with the central part of the moving object. There was a problem that it was difficult.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. A moving object has a transmitter for emitting a predetermined radio wave, and a receiver for receiving the radio wave is provided. Position detection conversion circuits are provided which are arranged at two spaced points, and the irradiation direction of the spotlight is controlled by the phase difference between the receiver and the transmitter on both sides. With a structure that can be always tracked to point to the position, the irradiation direction of the spotlight can be accurately aimed at the moving object, and it can be fully useful for labor saving of writing work. It is to provide a direction control device.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on the embodiments shown in the drawings.

In FIG. 3, 11 is, for example, a stage 12
A moving object moving on the surface, 13 is a spotlight main body suspended from a ceiling 14 above the stage, and this spotlight main body 13 is illuminated by the spotlight main body 13 by a direction control drive means 15. The direction is held adjustable.

The moving object 11 has, for example, 20K.
The radio wave transmitter 16 of Hz is carried, for example, through accessories such as a necklace, a belt and a bracelet.

There are two receivers for receiving the radio waves emitted from the transmitter 16. The first receiver 17-1 is attached to the spotlight body 13 and the second receiver 17-2 is. It is fixedly arranged on the wall surface 18 of the stage.

As shown in FIG. 4, the transmitter 16 has a power source 16-1 and a transmitter circuit 16-2 which emits a predetermined radio wave (for example, 20 KHz).

Reference numeral 19 is a position detection conversion circuit fixed to the spotlight main body 13, and this position detection conversion circuit 19 receives the respective signals received by the two receivers 17-1 and 17-2. Of the phase difference detection circuit 19-1 for detecting the phase difference between the X-axis direction and the Y-axis direction of the motor based on the signal from the phase difference detection circuit 19-1. Direction control circuit 19-2 and Y
It has an axial control circuit 19-3.

The drive means 15 includes an X-axis drive motor 1
5-1 and Y-axis drive motor 15-2 and the control circuit 18
-2 and 18-3, and a drive circuit 15-3 for driving the X-axis drive motor 15-1 and the Y-axis drive motor 15-2, respectively, and the motors 15-1 and 15-3. -2 has a control pedestal 15-4 which operates by -2.

The structure of this embodiment has been described above. Next, its operation will be described.

When the radio wave transmitter 16 carried by the moving object 11 emits a radio wave of a predetermined frequency, the radio wave emitted from the radio wave transmitter 16 is transmitted to the first receiver 17-1 and the second receiver. Received by 17-2. Since both of the receivers 17-1 and 17-2 are separated by a predetermined distance, unless the spotlight main body 13 is correctly oriented to the moving object 11, the first receiver 17-1 is provided. The phase difference detection circuit 19-1 detects the phase difference between both radio waves received by the second receiver 17-2 and the second receiver 17-2.

Based on the phase difference signal, the directional axis of the spotlight body is programmed by the X-axis direction control circuit 19-2 and the Y-axis direction control circuit 19-3 which are programmed so as to point to the center of the moving object. The drive means 15 is drive-adjusted, whereby the irradiation optical axis of the spotlight main body 13 is corrected (tracked) so as to point to the central portion of the moving object 11.

Further, this spotlight irradiation direction control device is provided with a manual switching means so that directivity adjustment of the spotlight and on / off operation of the light can be performed by this manual operation, and radio waves are transmitted to, for example, a moving object. When the device is not carried, or when the reception of radio waves from the transmitter is disabled, the irradiation direction of the spotlight can be adjusted manually.

[0018]

As described above, according to the present invention, the radio wave transmitter 16 carried by the moving object 11 to be illuminated by the spotlight is provided.
And the spotlight body 13 and the first receiver 17-1 which is fixed at a position apart from the spotlight body 13 respectively.
And a second receiver 17-2, a phase difference detection circuit 19-1 for detecting the phase difference between the reception signals received by both receivers, and an output from the phase difference detection circuit 19-1. Since the spotlight irradiation direction control device has the spotlight main body drive means 15 for directing the spotlight irradiation optical axis to the moving object 11 so that the phase difference becomes zero, according to this. The irradiation optical axis of the spotlight main body is controlled by the radio wave transmitter carried by the moving object and the first receiver 17-1 and the second receiver 17-2 mounted on the spotlight main body 13 and the fixed wall surface 18, respectively. However, since the spotlight body can be automatically tracked so as to point to the center of the moving object, a worker (operator) for adjusting the spotlight position unlike the conventional case is not required, which saves the work. Help of. Further, since the light emitting element is carried by the moving object, it is possible to obtain an effect that fine control can be performed so that the center (optical axis) of the spotlight is directed to the central portion of the moving object.

[Brief description of drawings]

FIG. 1 is an explanatory view of a conventional spotlight irradiation direction control device.

FIG. 2 is an explanatory diagram of another conventional spotlight irradiation direction control device.

FIG. 3 is an explanatory diagram of a spotlight irradiation direction control device of a conventional example of the present invention.

FIG. 4 is an explanatory diagram of a circuit configuration according to an embodiment of the present invention.

[Explanation of symbols]

11 ... Moving object 12 ... Stage 13 ... Spotlight main body 14 ... Ceiling 15 ... Direction control drive means 15-1 ... X-axis drive motor 15-2 ... Y-axis drive motor 15-3 ... Drive circuit 15-4 ... Control pedestal 16 ... Radio wave transmitter 16-1 ... Power supply 16-2 ... Oscillation circuit 17-1 ... First receiver 17-2 ... Second receiver 18 ... Wall surface 19 ... Position detection conversion circuit 19-1 ... Phase difference detection circuit 19-2 ... X-axis direction control circuit 19-3 ... Y-axis direction control circuit

Claims (1)

[Claims] 1. A radio transmitter (16) carried by a moving object (11) to be irradiated with a spotlight, a spotlight main body (13) and a first fixed to a position apart from the spotlight main body. Receiver (17-1) and second receiver (17-2), a phase difference detection circuit (19-1) for detecting the phase difference between the received signals received by both receivers, and Based on the output from the phase difference detection circuit (19-1), a spotlight body drive means (15) for directing the spotlight irradiation optical axis to the moving object (11) so that the phase difference becomes zero. A spotlight irradiation direction control device having.