JPH09147606A - Spot light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control type spot light which shows high accuracy in positioning. SOLUTION: Positions A to D where infrared radiation from a remote control unit has access to the overlapping range of all detection areas is detected, and the mean value of the detected result of a pan axis regarding two positions B, D in the positions A to D, where the infrared radiation has access to detection areas PA1, PA2 for panning and the mean value of the detected result of a tilt axis regarding two positions A, C where the infrared radiation has access to detection areas TA1, TA2 are sought. A spot light main body is panned and tilted to the position obtained from the mean values regarding the pan axis and the tilt axis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spotlight, and more particularly to a spotlight in which the irradiation direction of the spotlight is remotely controlled by infrared rays emitted from a remote controller (hereinafter abbreviated as a remote controller). .

[0002]

2. Description of the Related Art A conventional remote control type (hereinafter, referred to as a remote control type)
An example of a spotlight (abbreviated as a remote control type) is shown in FIG. The spotlight 100 accommodates an illumination lamp therein, and includes a lens 1c and five infrared light receiving element blocks S
B, PB1, PB2, TB1, TB2, a spotlight main body 1a provided on the front surface, and a spotlight main body 1a.
And an arm 1b to which a pan drive block 11 and a tilt drive block 12 are attached.

A pan drive block 11 is built in the upper part of the arm 1b, and a pan axis PJ is mounted on a base D installed on a ceiling or the like.
Fixed to On the other hand, the tilt drive block 12 is built in the side surface of the arm 1b, and the tilt axis TJ is fixed to the spotlight main body 1a. This spotlight 1
Since the spotlight body 00 can rotate the spotlight main body 1a about the pan drive axis PJ by the pan drive block 11, the rotation of the spotlight lens 1
The direction of c changes in the horizontal direction. This is called pan driving. The spotlight 100 can rotate the spotlight body 1a about the tilt drive axis TJ by the tilt drive block 12, and the rotation changes the direction of the spotlight lens 1c in the vertical direction. This is called tilt drive.

The above-mentioned pan drive shaft PJ and tilt drive shaft TJ
Are provided with potentiometers, respectively, and can detect a rotation angle with respect to the pan drive axis PJ and a rotation angle with respect to the tilt drive axis TJ. Therefore, the pan drive block 11 and the tilt drive block 12 can irradiate the spotlight 100 with light in an arbitrary direction, and the drive angles at that time can be set to the pan drive axis PJ and the tilt drive axis TJ.
It can be detected by the potentiometer.

Each infrared light receiving element block SB, PB1,
PB2, TB1, and TB2 are composed of an infrared detection element such as a pyroelectric element, an amplifier, and a threshold comparison circuit. The infrared detection element converts the amount of infrared light incident on the infrared signal into an electric signal, and the electric signal is amplified by the amplifier to generate a threshold value. Infrared rays emitted from the remote controller are detected by comparing the signal amplified by the comparison circuit with a preset threshold value.

The light receiving surface of the infrared light receiving element of the drive stopping light receiving element block SB is provided vertically above the center of the lens 1c provided on the front surface of the spotlight body 1a. The light receiving surfaces of the infrared detecting elements of the pan light receiving element blocks PB1 and PB2 are provided on both horizontal sides of the light receiving surface of the drive stop light receiving element block SB. The light receiving surfaces of the infrared detecting elements of the tilt light receiving element blocks TB1 and TB2 are provided on both sides in the vertical direction of the light receiving surface of the drive stop light receiving element block SB.

Further, in front of each light receiving element block,
A guide mechanism P is provided to limit the direction of infrared rays entering each light receiving element block. This guide mechanism P
Is a circular tubular body, that is, a cylindrical shape, and its inner wall surface is subjected to infrared diffuse reflection preventing treatment. By providing such a guide mechanism P, the infrared detection range of each infrared light receiving element block is limited. That is, only the infrared rays having a constant incident angle with respect to the light receiving surface of each infrared light receiving element are detected by the light receiving element block.

Another example of a conventional remote control type spotlight is shown in FIG. In this spotlight 101, a guide mechanism P is provided on the front surface of the spotlight main body 1a, and each light receiving element block SB, PA is provided in the guide mechanism P.
Infrared passage holes for 1, PA2, TA1 and TA2 are provided. These infrared passage holes have a circular cross-sectional area, and the inner wall surfaces thereof are subjected to the diffused reflection prevention processing of infrared rays as in the case of FIG.

An outline of the infrared detection area of each infrared receiving element block is shown in FIG. The detection range SA of the drive stop light receiving element block SB is formed on the front surface of the front surface of the spotlight main body 1a, and the detection ranges PA1 and PA2 of the two pan light receiving element blocks PB1 and PB2 have overlapping portions. Formed on the opposite sides of the detection range SA of the drive stop light receiving element block SB, and similarly, the detection ranges TA1 of the two tilt light receiving element blocks TB1 and TB2,
TA2 has an overlapping portion and is formed on the opposite side across the detection range TA of the drive stop light receiving element block SB.

The basic operation of remote control of the spotlight remote control will be described with reference to FIGS. 9 to 12. 9 to 12 are diagrams showing a state during remote control by the remote controller. When the spotlight body 1a is pan-driving and tilt-driving, the position where the infrared rays from the remote control fall within the overlapping detection range of the five detection areas is set to position A. After passing the position A, the pan drive and the tilt drive are further continued, and the point out of the overlap detection range is set to the position B (FIG. 9). When the position B is reached, the spotlight main body 1a is driven toward the inside of the overlap detection range, which is the direction perpendicular to the driving direction up to that point, and the infrared rays from the remote controller again exit the heavy detection multiple range. Is the position C (FIG. 10).

When the position C is reached, the spotlight body 1a is driven toward the inside of the overlap detection range, which is the direction perpendicular to the driving direction up to that point. Then, the position where the infrared ray from the remote controller leaves the overlap detection multiple range again is defined as position D (FIG. 11). Position B obtained in this way
Then, the position E, which is the midpoint of the position D, is obtained, and the spotlight body 1a is pan-driven or tilt-driven to the position E (FIG. 12).

Here, the quadrangle ABCD is a rectangle inscribed in the overlap detection range, and the position E is the center of the rectangle. Therefore, the position E is the center of the overlap detection range and also the center of the detection area of the infrared light receiving element block SB for driving stop. Therefore, the spotlight body 1a
The spotlight body 1a can be driven in the direction of the remote controller by driving the infrared beam from the remote controller to the position E by driving the pan or tilt of the spotlight. Can be realized.

[0013]

However, in the case of the above control method, when the driving direction is changed at the position B or the position C, the driving cannot be accurately performed in the vertical direction with respect to the driving direction up to that point. In some cases, the position E, which is the irradiation direction of the spotlight body 1a, does not match the position of the remote controller in such a case.

This state is shown in FIG. This figure is a diagram showing a state where the spotlight body 1a is driven in a direction different from the vertical direction of the driving direction up to that point for some reason when the driving direction is changed at the position C. Since the driving direction from the position C is wrong, the position next out of the overlap detection range also becomes a position D ′ different from the original position D. Therefore, the position obtained as the midpoint between the positions B and D ′ is also different from the position E ′.
Becomes

If the error in the pan axis direction from the position D ′ to the position D is Δp and the error in the tilt axis direction is Δt, the error from the position E ′ to the position E is Δp / 2 in the pan axis direction.
And the tilt axis direction becomes Δt / 2. In this way, in the conventional spotlight 1a, when an error occurs in the detected position B or position D, an error also occurs in the position E where the spotlight main body 1a should be drive-controlled, and accurate remote control is performed. Could not be done.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a remote control type spotlight with high positioning accuracy.

[0017]

According to a first aspect of the present invention, there is provided a pan drive block for pan-driving a spotlight body, a tilt drive block for tilt-driving, and a rotation of pan driving and tilt driving. Equipped with a potentiometer on the axis, the front of the spotlight body,
The infrared light receiving element block for driving stop, the two infrared light receiving element blocks for pan provided on both sides of the driving stopping block in the horizontal direction, and the two infrared receiving element blocks for driving on the vertical side of the driving stopping block. It is equipped with two infrared ray receiving element blocks for tilting, and is further equipped with a guide mechanism in front of each light receiving element block for limiting the direction of the infrared rays that can be received, and the spotlight body is pan-driven by the infrared rays emitted from the remote controller. Or in a tilt-driven spotlight, while the spotlight body is panning and tilting, the potentiometer detects the position where infrared rays fall within the overlapping area of the detection areas of all the light-receiving element blocks, and the spotlight body is continuously driven. Then, use the potentiometer to determine the position when the infrared rays leave the overlapping range. Detect, drive the spotlight body in the direction perpendicular to the driving direction at that time, toward the inside of the overlapping detection range, and then detect the position when the infrared ray leaves the overlapping range again with the potentiometer Then, the spotlight main body is driven toward the inside of the overlap detection range, which is the direction perpendicular to the driving direction at that time, and then the position when the infrared rays go out of the overlap range again is detected by the potentiometer. , Of these four positions detected by the potentiometer, the average value of the detection results of the pan axis for the two positions that move in and out of the detection area of the pan light receiving element block is calculated, and the detection area of the tilt light receiving element block moves in and out. The average value of the tilt axis detection results for the two positions is calculated, and the average value is calculated for the pan axis and the chill axis. It is spotlight body to a given position and the pan driving and tilt driving configure.

A spotlight according to the present invention according to claim 2 is the spotlight according to claim 1,
Each of the above guide mechanisms is configured so that the detection area of the drive stop block is a circular area and the detection areas of the pan block and the tilt block are limited to a square area. A spotlight according to a third aspect of the present invention is the spotlight according to the second aspect, wherein the guide mechanism provided in front of the drive stopping block is a circular tubular body and is for panning. Each guide mechanism provided in front of the block and the tilt block is a rectangular tubular body.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the basic operation of the spotlight according to the present invention described in claim 1. FIG.
Indicates the locus of the position of the remote controller as seen from the spotlight body 1a, the detection area PA of each infrared receiving element block.
1, PA2, TA1, TA2, and SA, showing how the incident direction of the infrared beam emitted from the remote controller is changed by panning or tilting driving the spotlight body 1a. .

In the direction in which the spotlight body 1a should be driven, the position of the infrared beam from the remote controller is the detection area S.
The direction is the center of A. Also, PA1 and PA2 are
Infrared light receiving element blocks PB1 and PB2 for pans, respectively
, TA1 and TA2 are detection areas of the tilt infrared ray receiving element blocks TB1 and TB2, respectively, and SA is a detection area of the drive stopping infrared ray receiving element block SB.

The method of determining the positions A to D shown is the same as that of the conventional spotlight. That is, during the pan drive and tilt drive, the position where the infrared beam enters the overlapping detection range where the five detection areas overlap is set as position A, and the position where the infrared beams continue to be driven in the same direction to leave the overlapping detection area is set as position B. Position C is a position which is driven vertically from B and leaves the overlap detection area again, and position D is a position which is driven vertically from position C and leaves the overlap detection area again.
And

Regarding these positions A to D, the positions are stored and held as a pan driving angle and a tilt driving angle by potentiometers provided on the pan driving shaft PJ and the tilt driving shaft TJ. When the positions A to D are thus determined, the position E at which the spotlight main body 1a should be finally driven is obtained. The position E is determined by the drive angles of the pan drive axes of the positions B and D for the pan drive axis, and the drive angles of the pan drive axes of the positions A and C of the tilt drive axis. It is determined.

That is, the pan drive angle at the position E is given as an average value of the pan drive angle at the position B and the pan drive angle at the position D, and the tilt drive angle at the position E is equal to the tilt drive angle at the position A. It is given as an average value with the tilt drive angle of C. A spotlight that performs drive control by such a method will not be able to drive in a direction perpendicular to the drive direction up to that point when the drive direction is changed at the position B or the position C. The error in the position E to be driven can be reduced.

This state is shown in FIG. This figure is
Similarly to the above, when changing the driving direction at the position C, for some reason, the spotlight main body 1a is driven in a direction different from the vertical direction of the driving direction up to that point. If the error of the position D ′ with respect to the position D is Δp in the pan axis direction and Δt in the tilt axis direction, in the case of the conventional spotlight, FIG.
As shown in Fig. 2, the error at the position E is Δp /
2, which was Δt / 2 in the tilt axis direction.

In the case of the spotlight according to the invention,
Since the position of the position E ′ in the pan axis direction is obtained from the pan drive angles of the positions B and D, the error in the pan axis direction with respect to the position E of the position E ′ is Δp / 2, which is a conventional spot. Although the position is the same as the light, the position in the tilt axis direction is obtained by the tilt drive angles of the positions A and C. Therefore, if the positions A and C are correctly obtained, the position in the tilt axis direction of the position E ′ is obtained. The error is zero.

Therefore, the spotlight according to the present invention is
It is possible to accurately drive the spotlight body in the direction of the remote controller by remote control from the remote controller without adding new hardware. FIG. 3 shows a configuration example of the spotlight according to the present invention as set forth in claims 2 and 3.
Shown in This spotlight is provided with a guide mechanism P provided in front of the infrared light receiving element block SB for stopping driving.
Has a circular cross section of the infrared passage and a circular detection area SA that is an infrared region that can be incident on the light receiving surface of the drive stop block SB.

On the other hand, the guide mechanism P provided in front of the infrared ray receiving element blocks PB1, PB2, TB1 and TB2 for panning and tilting has a rectangular or square cross section of the infrared ray passing path, and these infrared ray receiving elements are received. Infrared regions PA1, PA2 that can be incident on the light receiving surface of the element block,
The shapes of TA1 and TA2 are square. The detection area of each infrared light receiving element block of such a spotlight is shown in FIG. Detection area S of the drive stop block
The boundary line between the detection areas PA1, PA2, TA1, and TA2 of the pan and tilt blocks in A is a straight line.

Further, the detection area PA of the pan block
The boundary line between 1 and PA2 is perpendicular to the pan drive direction, that is, parallel to the tilt drive direction in the detection area SA of the drive stop block, and the detection area T of the tilt block.
The boundary line between A1 and TA2 is perpendicular to the tilt drive direction, that is, parallel to the pan drive direction in the detection area SA of the drive stop block.

FIG. 5 shows a situation in which a method similar to the method shown in FIG. 1 is applied to a spotlight having such a detection area. Similar to FIG. 13, this drawing shows a situation where the spotlight body 1a is driven in a direction different from the vertical direction of the driving direction until then, when the driving direction is changed at the position C, for some reason. It is a figure.

Since the boundary line of the detection area PA1 of the pan infrared ray receiving element block is a straight line perpendicular to the pan driving direction, the error of the position D'with respect to the position D becomes zero in the pan axis direction. On the other hand, regarding the tilt axis direction,
An error Δt similar to that in the case of the conventional spotlight occurs. However, in determining position E ', position D'
Since the tilt drive angle is not taken into consideration, the error in the position E ′ with respect to the position E does not occur due to the error Δt in the tilt drive angle in the position D ′.

That is, the position E'is given with respect to the pan drive angle as an average value of the pan drive angles of the positions B and D, and these drive angles are accurate values independent of Δt. In addition, the obtained pan drive angle at the position E ′ is also an accurate value that does not include an error. Further, since the tilt drive angle is given as an average value of the tilt drive angles at the positions A and C, the obtained tilt drive angle at the position E ′ is also an accurate value irrelevant to the error Δt. .

As can be understood from the above description, the driving angle with respect to the pan axis of the position E'where the spotlight body 1a should be driven is determined by the pan driving angles of the positions B and D, but the pan blocks PB2, PB1. The guide mechanism P of
Since the detection areas PA1 and PA2 are limited to the rectangular shape, the pan drive angles at the positions B and D are always accurate values, and the tilt drive angle at the position E ′ can also be accurately calculated. .

The drive angle of the position E'with respect to the tilt axis is determined by the tilt drive angles of the positions A and C, but the guide mechanism P of the tilt blocks TB2, TB1 makes these detection areas TA1, TA2 square. Since the shape is limited, the tilt drive angles at the positions A and C are always accurate values, and the tilt drive angle at the position E ′ can also be accurately obtained.

When changing the driving direction at the position B, if the spotlight body 1a is driven in a direction different from the direction perpendicular to the driving direction up to then for some reason, only the tilt driving angle at the position D is changed. However, an error also occurs in the pan drive angle at the position C, but the position E to be finally driven is obtained without using these drive angles, and thus is an accurate position that does not include an error. Accurate drive control can be performed by remote control from a remote controller.

[0035]

According to the spotlight of the present invention as set forth in claim 1, of these four positions detected by the potentiometer, the result of detection of the pan axis relating to two positions in and out of the detection area of the pan light receiving element block. The average value of the detection results of the tilt axis with respect to the two positions entering and leaving the detection area of the tilt light receiving element block is calculated, and the spotlight main body is moved to the position given by the above average values with respect to the pan axis and the chill axis. Pan drive and tilt drive.

Therefore, the spotlight according to the present invention is
Compared to conventional spotlights that pan and tilt the spotlight body to the midpoint between the two positions detected by the potentiometer, the spotlight drive control can be performed more accurately without adding new hardware. it can. In the spotlight according to the present invention described in claim 2, each of the above guide mechanisms limits the detection area of the drive stopping block to a circular area and limits the detection areas of the pan block and the tilt block to a rectangular area. ing.

Therefore, the tilt drive angle at the position where the infrared beam from the Mokon exits the detection area of the pan block is always constant, and the pan drive angle at the position where the infrared beam exits the detection area of the tilt block is constant. The position where the spotlight is finally driven is always constant, and the position where the spotlight should be finally driven can always be made to coincide with the center of the detection area of the drive stop block regardless of the drive control error.

Therefore, as compared with the conventional spotlight, the drive control of the spotlight can be performed more accurately. In the spotlight according to the present invention as set forth in claim 3, the guide mechanism provided in front of the drive stopping block is a circular cylindrical body, and each guide mechanism provided in front of the pan block and the tilt block. Is a rectangular tubular body.

Therefore, each of the above guide mechanisms limits the detection area of the drive stop block to a circular area and limits the detection areas of the pan block and the tilt block to a square area, which is more than the conventional spotlight. The drive control of the spotlight can be performed more accurately.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a basic operation of a spotlight according to the present invention described in claim 1.

FIG. 2 is a diagram showing an example of an operation when the spotlight main body is driven in the wrong direction in the spotlight according to the present invention described in claim 1.

FIG. 3 is a diagram showing an example of the configuration of a spotlight according to the present invention as defined in claims 2 and 3.

FIG. 4 is a diagram showing a detection area of each infrared light receiving element block of the spotlight shown in FIG.

5 is a diagram showing an example of a basic operation of the spotlight shown in FIG.

FIG. 6 is a diagram showing a configuration of a conventional spotlight.

FIG. 7 is a diagram showing another configuration of a conventional spotlight.

FIG. 8 is a diagram showing a detection area of each infrared light receiving element block of a conventional spotlight.

FIG. 9 is a diagram for explaining a basic operation of a conventional spotlight.

FIG. 10 is a diagram for explaining a basic operation of a conventional spotlight.

FIG. 11 is a diagram for explaining a basic operation of a conventional spotlight.

FIG. 12 is a diagram for explaining a basic operation of a conventional spotlight.

FIG. 13 is a diagram showing an example of an operation when the spotlight body is driven in the wrong direction in the conventional spotlight.

[Explanation of symbols]

1 ... Spotlight 1a ... Spotlight main body 11 ... Pan drive block 12 ... Tilt drive block PJ ... Pan drive rotation axis TJ ... Tilt drive rotation axis SB ... Drive Infrared light receiving element block for stop PB1, PB2 ... Infrared light receiving element block for pan TB1, TB2 ... Infrared light receiving element block for tilt P ... Guide mechanism SA, PA1, PA2, TA1, TA2 ...・ Detection area

Claims (3)

[Claims] 1. A pan drive block for pan-driving a spotlight main body, a tilt drive block for tilt-driving, and a potentiometer on a rotary shaft for pan drive and tilt drive. , An infrared light receiving element block for driving stop, two infrared light receiving element blocks for pan provided horizontally on both sides of the light receiving element block for driving stop, and two infrared ray receiving element blocks for driving stop in the vertical direction. It is equipped with two tilting infrared ray receiving element blocks provided laterally, and further provided with a guide mechanism for limiting the direction of infrared rays that can be received in front of each light receiving element block, and spotted by infrared rays emitted from the remote controller. In a spotlight that pans or tilts the light body, During tilt driving, the position where infrared rays enter the overlapping area of the detection areas of all the light receiving element blocks is detected by the potentiometer and the spotlight body is continuously driven, and then the position when infrared rays exit the overlapping area. Is detected by the potentiometer, the spotlight body is driven in the direction perpendicular to the driving direction at that time, toward the inside of the overlapping detection range, and then the position when the infrared ray again leaves the overlapping range is determined. Detected by the potentiometer, in the direction perpendicular to the driving direction at that time, toward the inside of the overlap detection range,
The spotlight body is driven, and then the position when infrared rays go out of the overlapping range is detected by the potentiometer, and the detection area of the pan light receiving element block is moved in and out of these four positions detected by the potentiometer. The average value of the pan axis detection results for the two positions is calculated, and the detection area of the tilt light receiving element block is moved in and out.
A spotlight, wherein an average value of detection results of a tilt axis regarding one position is obtained, and the spotlight body is pan-driven and tilt-driven to a position given by the average value with respect to the pan-axis and the tilt axis. 2. The spotlight according to the present invention as set forth in claim 1, wherein each of the guide mechanisms has a circular detection area of the drive stopping light receiving element block, and the pan light receiving element block and the tilt light receiving element. A spotlight that limits the detection area of a block to a rectangular area. 3. The spotlight according to claim 2, wherein the guide mechanism provided in front of the drive stop light receiving element block is a circular cylindrical body, and the pan light receiving element block and the tilt are provided. A spotlight in which each guide mechanism provided in front of the light receiving element block is a rectangular cylindrical body.