JPH0963303A - Spotlight unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the efficiency of a positioning work, and improve the reliability of control by making slave spotlights follow the swing drive of a master spot light by a controller unit. SOLUTION: When a master spotlight SL1 is remotely operated and is swing- driven, the spotlight SL1 detects a drive angle by a swing drive, and outputs the same to a controller unit CU as a position detection signal. Based on the position detection signal, the unit CU outputs drive control signals to respective slave spotlights SL2 to SLn. Based on the drive control signals, the respective slave spotlight drive control portions DR2 to DRn control the swing drives so that the spotlight radiation directions follow the radiation direction of the spotlight SL1. Thereby, all the spotlight radiation directions can be controlled by only the radiation direction control of the spotlight SL1 so that the radiation direction control can be conducted quickly and easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spotlight system, and more particularly to a spotlight system that includes a control unit and controls irradiation positions of a plurality of spotlights.

[0002]

2. Description of the Related Art The inventors of the present application filed Japanese Patent Application No. 6-317.
In 388 etc., using a remote control that emits light and providing a light receiving sensor block in the spotlight,
We proposed a remote control type spotlight that can detect the remote control automatically. As shown in FIG. 6, this spotlight SL includes five light receiving element blocks PS1 on the front surface of the main body H provided with the light projecting lens r of the spotlight SL.
A light receiving sensor block composed of PS2, TS1, TS2, and SS is provided to automatically detect light emitted by a remote controller (not shown) and follow the main body H toward the remote controller for orientation control.

Here, in the light receiving sensor block, the pan detection area P in which the respective detection areas P1 and P2 overlap horizontally
So that E is formed, a pair of pan light receiving element blocks PS1 and PS2 horizontally opposed to each other and a tilt detection area TE in which the detection areas T1 and T2 are vertically overlapped are formed. A pair of tilt light receiving element blocks TS1 and TS2 are provided opposite to each other, and a drive stop block SS is provided in the center thereof so that a stop detection area SE is formed. Therefore, in appearance, the drive stopping block SS is centered and the
A pair of pan light receiving element blocks PS1 and PS2 and a set of tilt light receiving element blocks TS1 and TS2 are arranged in a cross shape.

These light receiving element blocks PS1 and PS
The detection area formed by 2, TS1, TS2, and SS includes a pan detection area PE, a tilt detection area TE, and a stop detection area S, as shown in FIG. By the way, such a spotlight SL has a pan drive block (not shown) for horizontally moving the main body H about the pan axis PJ and a vertical movement of the main body H about the tilt axis TJ. The tilt driving block (not shown) is built in the main body H, and the remote control as the target is optically detected and the positioning is controlled as follows.

The control operation in this case will be described with reference to FIGS. 8 to 11. First, the pan drive block is operated,
When the remote controller is detected in the stop detection area S, the main body unit H is panned in the direction of the remote controller. By this pan operation, the remote controller enters the pan detection area PE formed by the pair of pan light receiving element blocks PS1 and PS2 in the stop detection area S, and finally leaves the detection area PE. While moving the part H horizontally, the remote control moves the pan detection area P within the stop detection area S.
The detection start position A that enters E and the detection end position B that exits from the pan detection area PE are stored (see FIGS. 8 and 9).

In this way, the movement amount of the pan detection area is calculated from the detection start position A and the detection end position B of the pan detection area PE in the stop detection area S, the midpoint position C is calculated, and the pan drive block is calculated. Are operated in the opposite direction to position the main body H at the midpoint position C. As a result, the main body H is placed facing the intermediate position C of the pan detection area PE.

Then, with the pan operation of the main body H fixed, the tilt drive block is operated to move the main body H up and down to detect the remote controller. With this tilt operation,
When one of the pair of tilt light receiving element blocks TS1 and TS2 detects the remote controller, the tilt drive block is further
The main body H is moved in the direction of the remote controller. As a result, the remote controller enters the tilt detection area TE formed by the pair of tilt light receiving element blocks TS1 and TS2 in the stop detection area S, and finally the detection area T.
Since it goes out of E, the detection start position D in which the remote control enters the tilt detection area TE and the detection end position E in which the remote control enters the tilt detection area TE are stored while the main body H is tilted.

The detection start position D stored in this way
Then, the tilt movement amount is calculated from the detection end position E and the midpoint position F is obtained, and the tilt drive block is operated in the opposite direction to orient the main body H at the midpoint position F. As a result, the light receiving block S for driving the light receiving sensor block is stopped.
Since S is placed in the center of the stop detection area S from the principle of elementary geometry, the remote control is located on the optical axis of the drive stop light receiving block SS, and the front surface of the main body H is oriented to the light generator. Will be done. Steps 201 to 213 in FIG.
Is a flow chart showing the basic procedure of the position control method in this case.

[0009]

However, in the case of the conventional spotlight system, even if the spotlight system is composed of a plurality of spotlights, it is necessary to individually perform positioning control by the remote controller for each spotlight. The positioning work was complicated and the work efficiency was poor.

Even when all the spotlights are driven in conjunction with each other, the spotlight system as a whole is expensive because each spotlight needs to have an infrared light receiving element block. Furthermore, since the spotlight projector emits a considerable amount of heat, the entire spotlight becomes hot during use, but the infrared light receiving element may malfunction due to this temperature change, causing a problem in the reliability of remote control. there were.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a spotlight system that enables efficient positioning work and has high reliability in positioning control at low cost.

[0012]

According to the spotlight system of the present invention as set forth in claim 1, a potentiometer is connected to the pan axis and the tilt axis to detect a drive angle due to a swing drive, and a position indicating the drive angle. Based on a master spotlight that outputs a detection signal and a drive control signal, a swing drive is performed around a pan axis and a tilt axis 1
Alternatively, based on the position detection signals from two or more slave spotlights and the master spotlight, the drive angles for the pan axis and tilt axis of each slave spotlight are obtained, and the drive control signal is sent to each slave spotlight. It is composed of an output controller unit. The drive control signal is calculated by the controller unit so that the swing drive of the slave spotlight follows the swing drive of the master spotlight.

The spotlight system according to the present invention as defined in claim 2 is a remote controller for receiving the remote control signal emitted from the remote controller by the master spotlight of the spotlight system according to the invention as defined in claim 1. It is configured to include a signal receiving block, and a drive control unit that swings and drives about a pan axis or a tilt axis based on an output signal of the remote control signal receiving block. This master spotlight is remotely controlled by its remote control, and the slave spotlight is also driven so as to follow it.

In the spotlight system according to the present invention as defined in claim 3, the master spotlight of the spotlight system according to the invention as defined in claim 2 is configured as a remote control signal receiving unit having no light projecting device. . The remote control signal receiving unit is remotely controlled by its remote control to swing, and the slave spotlight is also driven to swing in accordance with the remote control.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the configuration of a spotlight system according to the present invention as set forth in claims 1 and 2. This spotlight system is configured by connecting a plurality of spotlights SL1 to SLn to a controller unit CU. Of the spotlights SL1 to SLn, only the spotlight SL1 is a master spotlight, and the other spotlights SL2 to SLn are slave spotlights.

Slave spotlights SL2 to SLn
Drive control unit DR2 to the spotlight bodies H2 to Hn.
To DRn. Spotlight body H2
To Hn are light projecting devices F2 to project the spot light.
Fn, which is driven by the drive control units DR2 to DRn in the horizontal direction about the pan axis PJ, or vertically in the vertical direction about the tilt axis TJ. The projection direction of can be controlled.

The master spotlight SL1 further comprises an infrared light receiving element block SB as a remote control signal receiving block. When each light receiving element of the infrared light receiving element block SB receives the infrared light emitted from the remote controller R, the drive control unit DR1 swings the spotlight SL1 by pan drive or tilt drive to control the irradiation direction of the spot light. Match R in a certain direction. That is, the master spotlight SL1
It is remotely operated by the remote controller R and driven to swing.

Further, the master spotlight SL1 is
The drive angle by the swinging drive is detected and output as a position detection signal to the control unit CU. The control unit CU outputs a drive control signal to each of the slave spotlights SL2 to SLn based on this position detection signal. Based on this drive control signal, the drive control units DR2 to DRn of the slave spotlights drive the spotlights to swing around the pan axis PJ or the tilt axis TJ and set the irradiation direction of the spotlights to the master spotlight SL1. Follow the irradiation direction.

A more detailed block diagram of the spotlight system shown in FIG. 1 is shown in FIG. The master spotlight SL1 includes a spotlight body H1, an infrared light receiving element block SB, a position detection circuit PD, and a drive control unit D.
It is composed of R1. Similar to the conventional spotlight SL ′, the spotlight SL1 is composed of five infrared ray receiving elements, and the drive control unit DR1 pans the spotlight SL1 based on the infrared ray detection signal output from each infrared ray receiving element of the light receiving element block SB. Move or tilt.

Further, the pan axis PJ and the tilt axis TJ of the master spotlight SL1 have potentiometers PM.
Are connected to each other, and the position detection circuit PD detects the drive angle of the spotlight SL1 based on the output signal from the potentiometer PM and outputs a position detection signal. This position detection signal is a signal including a pan angle θ1 that is a rotation angle about the pan axis PJ and a tilt angle φ1 that is a rotation angle about the tilt axis TJ.

Slave spotlights SL2 to SLn
Are composed of the spotlight bodies H2 to Hn and the drive control units DR2 to DRn, respectively, and do not include an infrared light receiving element block and a position detection circuit. Drive control unit DR
2 to DRn perform pan drive or tilt drive of the spotlight based on the drive control signal output from the control unit CU.

The controller unit CU is composed of an offset processing circuit OP. Offset processing circuit O
P designates the drive angles for the pan axis PJ and the tilt axis TJ based on the position detection signal output from the master spotlight SL1 for each of the slave spotlights SL2 to SL.
It is calculated for each Ln and is output as a drive control signal.

In this way, the infrared rays emitted from the remote controller R as a remote control signal remotely operate only the master spotlight SL1, and the control unit CU is calculated by the driving position of the master spotlight SL1. It is possible to drive the slave spotlights SL2 to SLn to different driving positions, and the slave spotlights SL2 to SLn are made to follow the remote control R so as to irradiate the spotlight in a certain direction even without the infrared light receiving element block. be able to.

This follow-up means slave spotlight S
Not only when the irradiation positions of L2 to SLn coincide with the irradiation position of the master spotlight SL1, but in order to maintain a constant relationship between the irradiation positions of the master spotlight SL1 and the master spotlight, the slave drive is used to drive the master spotlight. It also includes the case of linking spotlights. Here, an example of the calculation method of the offset processing circuit will be described with reference to FIGS.
To explain. 3 and 4 show the positional relationship among the master spotlight SL1, the slave spotlight SL2, and the remote controller R. As shown in FIG.

FIG. 3 is a view (plan view) when these are viewed from above, where the horizontal distance of the pan axis of the spotlights SL1 and SL2 is L1 and the vertical distance thereof is L2. 4 is a view (side view) when viewed from the side, where the distance from the floor surface to the spotlights SL1 and SL2 is L3 and L4, respectively, and the distance from the floor surface to the remote controller R is L5.

The initial directions of the spotlights SL1 and SL2 are vertical in FIG. 3 and horizontal in FIG. 4, and the pan angle from the initial direction of the spotlight SL1 is θ1 and the tilt angle is φ1. It is assumed that the drive angle required to direct the spotlight SL2 to the method of the remote controller R is the pan angle θ2 and the tilt angle φ2.

In FIG. 3, the distance from the remote control R to the spotlight SL1 in the vertical and horizontal directions is X1, respectively.
If it is X2,

[0028]

[Equation 1]

[0029]

[Equation 2]

It can be expressed as However, 90 ° <φ1
When <270 °, the sign of X1 is opposite, and when 90 ° <θ1 <270 °, the sign of X2 is opposite.
Further, the drive angles θ2 and φ2 of the spotlight SL2 are

[0031]

(Equation 3)

[0032]

(Equation 4)

Can be expressed as follows. Therefore, L1 to L5
Is a known value given in advance, the spotlight S
The tilt angle φ2 of L2 can be calculated by the equations (1) and (3) based on the tilt drive angle φ1 of the spotlight SL1. Also, the spotlight SL2
The pan angle θ2 can be calculated by equations (1), (2) and (4) based on the tilt angle φ1 and the pan angle θ1 of the spotlight SL1.

The offset processing circuit OP shown in FIG.
An input means such as a DIP switch or a variable resistor is provided, and the values of L1 to L5 are preset by this. If there are multiple slave spotlights, L
1, L2 and L3 are the spotlights SL2 to SLn
It is set for each. On the other hand, Master Spotlight SL
1 indicates a pan angle θ1 and a tilt angle φ as position detection signals.
A signal including 1 is output to the control unit CU.

Therefore, the offset processing circuit OP performs the calculations of the equations (1) to (4) to make the pan angles θ2 to θn and the tilt angles φ2 to φn to be driven for each of the slave spotlights SL2 to SLn. Can be calculated. The pan angles θ2 to θn obtained in this way
And tilt angles φ2 to φn are output as drive control signals to the corresponding slave spotlights SL2 to SLn.

Next, FIG. 5 shows an example of the construction of the spotlight system according to the present invention as defined in claim 3. This spotlight system is a remote control signal receiving unit S
U, a plurality of spotlights SL2 to SLn are connected to the controller unit CU. The remote control signal receiving unit SU is the master spotlight SL1 shown in FIGS. 1 and 2 excluding the light projecting device F1, and the remote control signal receiving unit SU includes an infrared light receiving element block SB, a position detection circuit PD and a drive. Control unit DR
1. Here, the light projecting device refers to a component for projecting spot light such as a light emitting body such as a light bulb or a light projecting lens r.

Similar to the master spotlight SL1, this remote control signal receiving unit SU receives infrared rays emitted from the remote control R, swings in a certain direction of the remote control R, and includes a pan angle θ1 and a tilt angle φ1. Outputs a position detection signal. However, this sensor unit S
Since U does not have the light projecting device F1, the sensor unit SU itself does not emit a spot light, and operates as a device that only detects the infrared rays of the remote controller R and outputs a position detection signal.

The spotlights SL2 to SLn are the same as the slave spotlights shown in FIGS. Further, the control unit CU is the same as that shown in FIGS. 1 and 2, and the control unit CU sends a drive control signal to each of the spotlights SL2 to SLn based on the position detection signal from the SU. Output.

Normally, in a spotlight, since the light-emitting body in the light projecting device F generates heat, not only the light projecting device F but also the entire spotlight becomes high in temperature when projecting light. On the other hand, in the infrared light receiving element, the infrared ray detection characteristic generally changes due to temperature change. Therefore, when the infrared light receiving element block SB is provided in the spotlight, the sensitivity of the infrared light receiving element changes due to the temperature change due to the projection of the spotlight, but in the spotlight system according to the present invention, The remote control signal receiving element unit SU including the infrared light receiving element block SB is
Since 1 is not provided, the remote control of the spotlight does not malfunction due to the heat generated by the light projecting device F.

[0040]

According to the spotlight system of the present invention described in claim 1, the irradiation direction of the slave spotlight can be made to follow the irradiation direction of the spot light of the master spotlight. Therefore, by controlling only the irradiation direction of the master spotlights, the irradiation directions of all the spotlights can be controlled. That is, it is possible to provide a spotlight system that can control the irradiation direction quickly and easily as compared with a conventional spotlight system that requires individual control of the irradiation direction for all spotlights. .

In the spotlight system according to the second aspect of the present invention, the master spotlight is remotely controlled by the remote controller, and the slave spotlight follows it. Therefore, even if the slave spotlight does not include the remote control signal reception block, it can be remotely controlled by the remote control. That is, a spotlight system capable of remotely controlling all spotlights can be provided at low cost. Further, the work of remote control by the remote controller is shortened and simplified.

In the spotlight system according to the third aspect of the present invention, the master spotlight is configured as a remote control signal receiving unit having no light projecting device, and the remote control signal receiving block including an infrared light receiving element is provided. There is no influence of temperature change due to heat generation of the light projecting device. Therefore, the remote control signal receiving unit can be prevented from malfunctioning and the reliability of remote control can be improved, and the reliability of remote control of all spotlights can also be improved. Therefore, it is possible to provide a spotlight system with high reliability of remote control.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of the configuration of a spotlight system according to the present invention as defined in claims 1 and 2.

FIG. 2 is a more detailed block diagram of the spotlight system shown in FIG.

FIG. 3 is a plan view showing a positional relationship between a spotlight and a remote controller.

FIG. 4 is a side view showing a positional relationship between a spotlight and a remote controller.

FIG. 5 is a diagram showing a configuration example of a spotlight system according to the present invention as defined in claim 3;

FIG. 6 is a view showing a conventional remote control type spotlight.

FIG. 7 is a diagram showing a detection area of a light receiving element block.

FIG. 8 is a diagram showing a positioning control procedure by optical detection.

FIG. 9 is a diagram showing a positioning control procedure by optical detection.

FIG. 10 is a diagram showing a positioning control procedure by optical detection.

FIG. 11 is a diagram showing a positioning control procedure by optical detection.

FIG. 12 is a flowchart showing a positioning control procedure by optical detection proposed in the prior application.

[Explanation of symbols]

 SL1 ・ ・ ・ Master spot light SL2-SLn ・ ・ ・ Slave spot light CU ・ ・ ・ Control unit SB ・ ・ ・ Remote control signal receiving block DR1 〜 DRn ・ ・ ・ Drive control unit PJ ・ ・ ・ Pan axis TJ ・ ・ ・ Tilt Axis R ・ ・ ・ Remote control SU ・ ・ ・ Remote control signal receiving unit PM ・ ・ ・ Potentiometer F ・ ・ ・ Projector

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoyuki Inoue 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (3)

[Claims] 1. A master spotlight equipped with potentiometers for a pan axis and a tilt axis, detecting a drive angle with respect to the pan axis and the tilt axis by a swing drive, and outputting a position detection signal representing the drive angle, and a drive control signal. Based on the above, based on the position detection signal from one or more slave spotlights that pivotally drive the pan and tilt axes, and the master spotlight, the drive related to the pan and tilt axes of each slave spotlight. A spotlight system, comprising a controller unit that calculates an angle and outputs a drive control signal to each slave spotlight, and the slave spotlight follows the swing drive of the master spotlight. 2. The master spotlight, based on a remote control signal receiving block for receiving a remote control signal emitted from a remote control, and an output signal of the remote control signal receiving block,
The spotlight system according to claim 1, further comprising: a drive control unit that swings the pan axis or the tilt axis as a center, and the swing driving of the master spotlight is remotely controlled by a remote controller. 3. The spotlight system according to claim 2, wherein the master spotlight is configured as a remote control signal receiving unit having no light projecting device.