JPS629996B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spotlight with an automatic tracking device.

Conventionally, methods for illuminating the central person, i.e., the object to be illuminated, with spotlights at wedding halls or banquets have included a direct control method in which the operator of the spotlight manually changes the direction of the spotlight, or a wireless or wired method. A remote control method was used, in which the irradiated object was viewed and operated from a distance. However, both methods require an operator, which increases labor costs and has the disadvantage that the operator may lose sight of the object to be irradiated, or misjudge the object and perform erroneous operations. Ta. The present invention aims to solve the above-mentioned drawbacks.

Examples will be described below using figures. 1st
The figure and FIG. 2 show a first embodiment of the present invention, in which 1 is a light projecting section for a tracking light beam;
A plurality of gratings 2 for forming a light beam are provided in a matrix on the front surface, and a light emitting element 3 that emits infrared light modulated at a different frequency is disposed in the depths of each grating 2. This light projecting section 1
Since the projection direction of each of the tracking light beams projected by each grid 2 is regulated by each grating 2, the light beams are projected in predetermined directions. Reference numeral 4 denotes a tracked device, which is composed of a light receiving element 5 that receives the above-mentioned tracking light beam, an amplifier 6, and a wireless transmitter 7. The modulated signal is transferred using a radio wave of an appropriate frequency as a carrier wave. 15 is a receiver that receives this transferred signal (radio wave that transfers the output of the light receiving element 5), distinguishes the tracking light beam received by the wireless receiver 9 and the tracked device 4, and lights the spot light 12. It is comprised of a discrimination control section 10 that controls a drive motor 11 to project light in a predetermined direction. Note that it goes without saying that each light emitting element 3 may be turned on sequentially with a temporal shift. In addition, the wireless transmitter 7 and the wireless receiver 9 transmit signals using radio waves, but other than radio waves, ultrasonic waves or light (infrared rays)
The signal may be transmitted using the .

The operation of the embodiment will be explained below. Currently, a plurality of tracking light beams modulated at different frequencies are always projected from the light projecting unit 1 in a predetermined direction. If the target object of the spotlight moves to the position where the tracking light beam A is projected, the output signal of the light receiving element 5 of the tracked device 4 attached to the target object is amplified by the amplifier 6. A radio wave with a carrier wave of an appropriate frequency modulated by the output of this amplifier 6 is output from the wireless transmitter 7, and this signal is received by the wireless receiving section 9 of the receiver 15, and a forwarded modulated signal is output, and the microcomputer The information is input to the discrimination control section 10 formed by the following. This discrimination control section 10 compares the modulation signal received by the wireless reception section 9 with the modulation signal of the light emitting element 3 to determine which tracking light beam is being received. The spotlight 12 is directed in the direction in which the tracking light beam is projected. That is, since the tracking light beam A is now being received, the drive motor 11 controls the horizontally movable barrel 16 and the vertically movable arm 18 to move the spotlight 1.
2 in the direction in which the tracking light beam A is projected. Similarly, when the irradiated object moves to a position where it receives another tracking light beam, the spot light 12 tracks in the direction in which the tracking light beam is projected, and irradiates the irradiated object with the spot light. It's becoming like that.

FIG. 3 shows an embodiment of the second invention, in which a light-receiving element 21 is provided in place of the light-emitting element 3 of the above-mentioned light projecting section 1, so that each light-receiving element 21 has a different structure. This is a light receiving section that introduces incident light from the direction, and is disposed at a position where light from the tracked light emitter 22 attached to the irradiated object is received. 24 is a tracked light emitter 22
This is a discrimination control circuit that discriminates which light receiving element 21 receives light from the light receiving element 21 and controls the spotlight 12 so that the spotlight 12 emits light in the direction in which the light is incident on the light receiving element 21. In the figure, 23 is a blinking circuit for the tracked light emitter 22, which blinks at a constant frequency (10 KHz) to prevent the automatic tracking device from malfunctioning due to the influence of external light. Note that the light receiving section 20 may be arranged on the ceiling surface, and the directivity may be improved using a hood or a lens. Fourth
Figure a shows another embodiment of the light receiving section 20, in which a convex lens 27 is arranged in front of a light receiving element substrate 26 in which a plurality of photodiodes 25 are arranged in a matrix on one wafer. The image of the tracked light emitter 22 is formed on the top of the photodiode 25. Each photodiode 25 is sequentially addressed by a scanning circuit 28, and the output of a control circuit 29 that detects and processes the output data is sent to a servo. circuit 3
The voltage is applied to the drive motor 11 via 0. The photodiodes 25 are arranged with 30 to 60 elements arranged vertically and horizontally, respectively.
The scanning time of all photodiodes 25 is about 1 second. FIG. 5 shows the light projecting section 1 of both inventions mentioned above.
Alternatively, it shows another embodiment of the light receiving section 20,
A grating 2, a light emitting element 3, and a light receiving element 21 are arranged on straight lines X and Y that are perpendicular to each other, and the position of the irradiated object is detected using orthogonal coordinates to control the spotlight 12. . By adopting such a configuration, the number of light emitting elements 3 and light receiving elements 21 is much smaller than in the embodiments shown in FIGS. 2 and 3 in which the light emitting elements 3 or light receiving elements 21 are arranged in a matrix. It is something.
FIG. 6a shows still another embodiment, in which a fan-shaped horn-shaped hood 2' as shown in FIG. 5b is used in place of the grid 2.
It is designed to form a tracking beam that spreads vertically, widening the light projection range, that is, the tracking range.

As described above, the first invention includes a light projecting unit that is formed by arranging a plurality of light emitting elements and projects a tracking light beam that is modulated differently from each light emitting element, and that the light beam projecting direction is The receiver is attached to the spotlight so as to substantially match the light projection direction of the spotlight, and has a light receiving element that receives light from a certain direction, and a wireless transmitter that transfers the output of the light receiving element to the spotlight side. A tracking device is attached to the target object of the spotlight, and a wireless receiving section receives the light receiving element output transferred via the wireless transmitter of the tracked device, and a wireless receiving section receives the light receiving element output received by the wireless receiving section. Based on this, the tracking light beam received by the tracked device is determined, and the deviation in the projection direction of the spotlight with respect to the direction of the object to be irradiated is determined, so that the direction of projection of the spotlight is directed toward the object to be irradiated. A discrimination control unit that controls the rotation of the spotlight is provided on the spotlight side, and by attaching a small tracked device consisting of a light receiving element and a wireless transmitter to the object to be illuminated by the spotlight, The spot light automatically tracks the object to be illuminated and provides spot illumination, which eliminates the need for a spot light operator, which has the advantage of reducing labor costs. This has the advantage that there is no possibility of losing sight of the object to be irradiated or erroneously operating the object due to misjudging the object. Further, the second invention is the above-mentioned invention, which is constituted by a plurality of light receiving elements, each of which has a tracked light emitting body attached to the irradiated object of the spotlight, and each of which introduces incident light from a different direction. By determining the light receiving part of the light from the tracked light emitter and the light receiving element receiving the light from the tracked light emitter, the direction of light incidence is detected, and the direction of the spotlight's projection is determined by the direction of the light incidence. This invention is similar to the first invention by simply attaching a smaller light emitter for tracking to the object to be illuminated by the spotlight. It is something that can be effective.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, and FIG.
The figure is a perspective view of the main parts of the same as above, FIG. 3 is a schematic configuration diagram of another embodiment, FIG. Figure a is a perspective view of the main part of another embodiment, Figure b is a front view of the main part of the same as above, and Figure 6 a is a front view of the main part of still another embodiment.
Figure b is a perspective view of the main parts of the same. 1 is a light projector, 4 is a tracked device, 5 and 21 are light receiving elements, 7 is a wireless transmitter, 12 is a spotlight, 15 is a receiver, and 22 is a tracked light emitter.

Claims (1)

[Claims] 1. A light projecting section that is formed by arranging a plurality of light emitting elements and projects a tracking light beam that is modulated differently from each light emitting device, and the light beam projecting direction is that of a spotlight. A tracked device is attached to a spotlight so as to substantially match the direction of light projection, and has a light receiving element that receives light from a certain direction, and a wireless transmitter that transfers the output of the light receiving element to the spotlight side. A wireless receiver is attached to the object to be illuminated by the spotlight and receives the output of the light receiving element transferred via the wireless transmitter of the tracked device. The tracking device determines the tracking light beam received by the tracking device, determines the deviation of the spotlight's projection direction with respect to the direction of the irradiated object, and adjusts the spotlight so that the direction of the spotlight's projection is in the direction of the irradiated object. A spotlight with an automatic tracking device, characterized in that a discrimination control section for controlling the rotation of the spotlight is provided on the spotlight side. 2. A tracked light emitter is attached to the irradiated object of the spot light, and the tracked light emitter is composed of a plurality of light receiving elements, each of which introduces incident light from a different direction. Discrimination that detects the direction of light incidence by determining the light receiving part and the light receiving element receiving the light from the tracked light emitter, and controlling the direction of the spotlight to rotate in the direction of light incidence. A spotlight with an automatic tracking device, characterized in that a control section is provided on the spotlight side.