JPH0447849Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to lighting used in studios, stages, and other wide-ranging applications, and particularly relates to a lighting control mechanism that allows remote control of the direction of illumination.

[Problem that the invention attempts to solve]

For example, lighting for stages, studios, etc. requires not only fixed lighting that illuminates the entire object broadly or partially, but also lighting that can change the direction of illumination, such as spotlights to enhance the production effect. Conventionally, changing the irradiation direction of such lighting had to be done manually, and it was not easy to change the irradiation direction, especially for lighting in high places or remote lighting.

This invention provides a lighting operation mechanism that allows remote control of the lighting direction regardless of the location of the lighting, allows for extremely wide and smooth changes in the range of changes, and enables centralized management and automation of multiple lights. It provides:

[Means for solving problems]

A means for solving the above problem is as described in the claims of the utility model registration, which includes a hollow light holder having a base portion, two support portions that sandwich the light, and a control mechanism, A rotating shaft protruding to the outside of the base, a means for engaging with the rotating shaft to rotate the rotating shaft relative to the lighting holder, and a means for detecting the rotational position of the rotating shaft, A means for rotating the clamped lighting is provided on one of the supporting parts, a means for detecting the rotational position of the lighting is provided on one or the other of the supporting parts, and the control mechanism includes a circuit that generates a rotational position instruction signal. , a lighting operating mechanism comprising: a circuit for synthesizing the rotational position instruction signal and a signal from a means for detecting the rotational position; and a circuit for forwarding, reversing, and stopping the rotation means based on the output signal of the synthesis circuit. .

〔Example〕

The present invention will be explained in detail below based on examples.
FIG. 1 is a plan view of an embodiment of the present invention with the top cover removed. The lighting holder 1 consists of a base part 2 and two supporting parts 3, 3, between which the lighting 4 is mounted.
is holding. The lighting holder 1 is hollow in this embodiment, and has a rotating shaft 5 protruding outside in its base 2, a bearing 9 supporting the rotating shaft 5, a gear 8 fitted to the rotating shaft, and a rotating shaft 5 protruding outside. It houses a motor 6 having a gear 7 that engages with a gear 8, and a variable resistor 10 for detecting the rotation angle of the rotating shaft 5 by a change in resistance value. Also, inside one of the support parts 3 is a motor 11 having a gear 12, and a gear 12.
A rotating shaft 15 with a gear 13 that engages with the rotating shaft 15 and a bearing 14 are housed, and the other support part 3 houses a rotating shaft 16, a bearing 17, and a variable resistor 18 that detects the rotation angle of the rotating shaft 16. are doing. The variable resistor, motor 11, etc. do not need to be housed in different support parts, but may be housed in one support part. Also. A control section 19 is housed in another space within the lighting holder 1. The control unit 19 has two built-in circuits configured as shown in FIG. 2, for example, one of which is used to control the motor 6 and the other to control the motor 11. In FIG. 2, 21 is an input terminal, 22 and 23 are operational amplifiers, 24 is a variable resistor linked to a motor 27, and 25 and 26 are power transistors. In the circuit shown in the figure, the motor 27 is driven in either forward or reverse direction depending on the value of the DC signal applied to the input terminal 21. In this example, the input signal is in the range of 0 to 10V, centered around 5V, when it goes below this, it rotates in the positive direction, and when it exceeds this, it rotates in the opposite direction. When the input signal is given, motor 2
7 changes the value of the variable resistor 24, the voltage applied to one input terminal of the operational amplifier 23 changes, and when the voltage applied to one input terminal of the operational amplifier 23 is balanced with the voltage at the other input terminal of the operational amplifier 23, the motor 27 stops. An example of the control mechanism of the present invention will be explained in more detail with reference to the figure.
The operational amplifier shown in FIG. 22 constitutes a circuit that generates a rotational position instruction signal, and outputs a voltage corresponding to the difference between the voltages input to its two input terminals to the output terminal side. Since a constant voltage of -5V is applied to the input terminal on the lower side of the figure, 0 from input terminal 21 is applied to the input terminal on the upper side of the figure.
When a voltage of ~10V is applied, −
Outputs a rotational position instruction signal of 5V to +5V. When the voltage at the input terminal 21 is set to +5V, the value of the output instruction signal becomes 0V. The operational amplifier 23 constitutes a circuit that synthesizes the rotational position instruction signal and the signal from the means for detecting the rotational position, and outputs a voltage corresponding to the difference between the voltages input to its two input terminals. ing. If the difference between the voltage of the input terminal on the upper side of the figure and the voltage of the input terminal on the lower side of the figure is 0V, the voltage of the output terminal will also be
The voltage is 0V, the transistors 25 and 26 are not operating, and the motor 27 is stopped. When the rotational position instruction signal changes and the voltage increases to the + side, the voltage at the output terminal also changes to the + side, so the transistor 25 is turned on and the motor 27 rotates in the forward direction. At this time, the value of the variable resistor 24, which is a rotational position detection means linked to the motor 27, changes, and the voltage at the upper input terminal of the operational amplifier 23 decreases in the negative direction, until the difference from the rotational position instruction signal becomes 0. Then, the voltage at the output terminal becomes 0V, and the motor 27 stops. When the rotational position instruction signal changes to the negative side, contrary to the above, the transistor 26
operates, the motor 27 rotates in reverse, the voltage at the upper input terminal of the operational amplifier 23 increases in the positive direction, and the motor 27 subsequently stops in the same manner. Therefore, by controlling the DC signal applied to the input terminal 21, the motors 6 and 11 can be stopped at desired positions. Now, when the motor 6 rotates in response to a signal from the control unit 19, the gears 7,
The shaft 5 rotates via a gear 8. Since the shaft 5 is fixed to a pedestal or the like by a fixture (not shown),
The entire light holder rotates around the axis. At the same time, the shaft of the variable resistor 10 is also rotated, and when the resistance value changes and reaches a certain value, the control section 19 stops the motor 6. Similarly, when the motor 11 is rotated by a signal from the control section 19, the rotating shaft 15 is rotated via the gears 12 and 13, and the illumination 4 is rotated around the shaft. axis 1
When the value of the variable resistor 18 engaged with the motor 6 reaches a constant value, the motor 11 stops.

In this way, the illumination 4 can freely move in two axial directions and can be stopped at any position.

[Effect of idea]

As described above based on the embodiments, the lighting operation mechanism of the present invention can freely remotely control the direction of illumination. Moreover, since the illumination is held between the supporting parts, the swing angle of the illumination is large and there are almost no blind spots in the irradiation direction.

The present invention has a hollow light holder that has a base and two support parts, and all the means for rotating the light are housed inside these parts, so it has an extremely sleek appearance. Manufacturable. In addition, the rotating means is housed inside the base, and the rotating shaft protrudes from the base to the outside.The lighting can be fixed simply by fixing the rotating shaft to a pipe or other object, making it extremely easy to install. It has the advantage of being simple. Further, since the rotational position detecting means and the driving mechanism can be housed inside the lighting holder, there is less risk of malfunction or damage due to dirt, etc., which is advantageous in terms of maintenance of the instrument. Furthermore, the irradiation direction can be arbitrarily and smoothly changed by simple electrical signal control, making it suitable for centralized control and automation of multiple lights, and has many other advantages.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a control circuit. DESCRIPTION OF SYMBOLS 1... Lighting holder, 2... Base part, 3... Support part, 4... Lighting, 5... Rotating shaft, 6... Motor,
7...Gear, 8...Gear, 9...Bearing, 1
0... Variable resistor, 11... Motor, 12... Gear, 13... Gear, 14... Bearing, 15...
...Rotating shaft, 16... Rotating shaft, 17... Bearing, 18... Variable resistor, 19... Control unit, 21
... Input terminal, 22, 23 ... Operational amplifier, 24
...Variable resistor, 25, 26...Power transistor, 27...Motor.

Claims (1)

[Scope of utility model registration request] A rotating light holder having a base, a hollow light holder having two substantially symmetrical support parts for holding the light, and a control mechanism, and protruding from the inside to the outside at the center of the base. A shaft is provided, a means for engaging the rotation shaft to rotate the rotation shaft relative to the lighting holder, and a means for detecting the rotational position of the rotation shaft are provided in the hollow interior of the base; , a means for rotating the clamped illumination is provided in one of the hollow parts of the support part, a means for detecting the rotational position of the illumination is provided in one or the other hollow part of the support part, and the control mechanism is configured to detect the rotational position of the illumination. The illumination holding device includes a circuit for generating an instruction signal, a circuit for synthesizing the rotational position instruction signal and a signal from a means for detecting the rotational position, and a circuit for reversing and stopping the rotation means based on the output signal of the synthesis circuit. A lighting operation mechanism characterized by being housed in a hollow part of a tool.