JPH11111020A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector, capable of finding the attitude angle of a lighting fixture mainbody and easily resetting the lighting fixture mainbody into an attitude angle before changed, after it is changed. SOLUTION: A projector has a support 7 and a lighting fixture mainbody 8 provided with a projecting plane on the front face and mounted on the support 7 via a rotationally movable support shaft. It has variable radiating directions around the rotationally movable support shaft. In this case, a scale plate 11a having an angle scale around the rotationally movable supporting shaft is provided between the support 7 and the lighting fixture mainbody 8, a first mark 11b showing an attitude reset position is provided on the support 7 to be opposed to the angle scale and a second mark 11c rotationally moved together with the lighting fixture mainbody 8, showing the rotationally moving angle of the lighting fixture mainbody 8, is provided on the lighting fixture mainbody 8, the scale plate 11a being able to be fixed to the lighting fixture mainbody 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector capable of changing an irradiation direction around a rotation support shaft.

[0002]

2. Description of the Related Art A conventional projector will be described with reference to FIGS. FIG. 10 is a side view showing a configuration of a conventional light projector. FIG. 11 is a side view of a main part showing an angle display unit of the light projector. FIG. 12 is a side view of a main part showing another configuration of a conventional light projector. FIG. 13 is a side view of a main part showing another configuration of a conventional light projector.

In FIG. 10, the light projector includes an arm 1 corresponding to a support, and a lamp main body 3 attached to the arm 1 via a rotation support shaft 2. It is made variable.

In this projector, a scale plate 4 is fixed to the side of the lamp body 3 as shown in FIG. 11, and rotates together with the lamp body 3 in accordance with the rotation of the lamp body 3. A mark 5 is provided at the tip of the arm 1 so that the user can know the attitude angle of the lamp main body 3 by reading the scale of the scale plate 4 indicated by the mark 5.

In the projector shown in FIG. 12, a scale plate 6 is attached to the arm 1, and the scale plate 6 is provided with a matching mark 6a. Scale plate 6 is a fixing screw 6
By loosening b, the arm can be turned around the rotation support shaft 2, and is fixed to the arm 1 by tightening the fixing screw 6 b. A matching mark 3a is provided on a side surface of the lamp body 3, and by turning the scale plate 6 or rotating the lamp body 3, the matching mark 3a and the matching mark 6a are pointed to each other. I have.

This projector is used as follows.
First, after the lamp body 3 is rotated in a desired irradiation direction, the scale plate 6 is rotated so that the matching mark 6a and the matching mark 3a point to each other, and the fixing screw 6b is tightened to fix the scale plate 6.
Is fixed. Thus, the installation is completed.

When the lamp (not shown) in the lamp body 3 is replaced, the lamp body 3 may be rotated to a posture angle suitable for replacing the lamp. In this case, it is necessary to return the lamp body 3 to the original posture angle again after the mounting work is completed, but in this projector, the worker and the like again make the matching mark 3a and the matching mark 6a reciprocate. The original posture angle can be returned by rotating the lamp main body 3 so as to point out.

In the projector shown in FIG. 13, a scale plate 6 is attached to the arm 1, and a restriction piece 6c is provided on the scale plate 6 so as to protrude outward in the same plane. . The scale plate 6 is rotatable around the rotation support shaft 2 by loosening the fixing screw 6d, and is fixed to the arm 1 by tightening the fixing screw 6d. Further, on the side surface of the lamp body 3, a regulated projection 3 b is provided so as to protrude toward the side where the scale plate 6 is provided in the support shaft direction. Then, by rotating the scale plate 6 or the lamp body 3, the regulating piece 6c and the regulated projection 3b are rotated.
It is made to hit.

This projector is used as follows.
First, after rotating the lamp body 3 in a desired irradiation direction, the scale plate 6 is rotated so that the regulating piece 6c and the regulated projection 3b come into contact with each other, and the fixing screw 6b is tightened to fix the scale plate 6.
Is fixed. Thus, the installation is completed.

In the case where the lamp body 3 is returned to the original posture angle by changing the posture angle of the lamp body 3 as described above, in this projector, an operator or the like must use the regulated projection 3b.
By rotating the lamp main body 3 until the light strikes the regulating piece 6c, the lamp main body 3 can be returned to the original posture angle.

[0011]

However, in the above-mentioned first conventional projector shown in FIG. 10, although the attitude angle of the lamp body 3 can be displayed, the lamp body 3 is temporarily moved to another attitude. In order to return to the original posture again, the original posture angle must be read from the scale and memorized. If the posture angle is changed by forgetting to read the scale, the lamp body 3 is moved to the original posture angle. There is a problem that it may not be possible to return to.

In the above-described second conventional projector shown in FIG. 12, the posture angle of the lamp body 3 is returned by turning the lamp body 3 so that the matching mark 6a and the matching mark 3a point to each other. However, since the scale plate 6 is rotated at the time of installation, there is a problem that the current posture angle of the lamp body 3 cannot be indicated.

Further, in the third conventional projector shown in FIG. 13 described above, the attitude angle of the lamp body 3 can be accurately returned to the original state, but the regulated projection 3b is restricted by the regulating piece 6c. Since the rotation of the lamp body 3 is restricted by the collision with the lamp body 3, there is a problem that the movable range of the lamp body 3 is limited to be smaller than the original movable range of the lamp body 3 in the installed state.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. It is an object of the present invention to determine the attitude angle of the lamp body and to easily change the attitude angle of the lamp body after the change. An object of the present invention is to provide a light projector that can return to an attitude angle and is not limited in its original movable range, which is smaller than the original movable range of the lamp body.

[0015]

According to the present invention, in order to solve the above-mentioned problems, according to the first aspect of the present invention, a support is attached to the support via a pivot. In a floodlight comprising a lamp body and a variable irradiation direction around a rotation support shaft, a scale plate having an angular scale centered on a rotation support shaft is provided between the support and the lamp body, A first mark indicating a posture return position is provided on a scale plate on a support, and a second mark indicating a rotation angle is provided on the scale plate on the lamp body, and the scale plate can be fixed to the lamp body. It is characterized by the following.

According to a second aspect of the present invention, a scale plate receiving portion for accommodating the scale plate is provided on the lamp body.

[0017]

1 to 9 show an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a perspective view of a main part showing an angle display unit of the light projector. FIG. 2 is a perspective view showing the appearance of the light projector. FIG. 3 is a side view showing the attitude of the projector in an initial state. FIG. 4 is a side view showing the angle display unit in the initial state of the projector. FIG. 5 is a side view of the attitude when the irradiation direction of the projector is set. FIG. 6 is a side view of the angle display unit when the irradiation direction of the projector is set. FIG. 7 is a side view of the angle display unit when the angle of the scale plate is adjusted according to the irradiation direction of the light projector. FIG. 8 is a side view of the posture when the irradiation direction of the light projector is changed. FIG. 9 is a side view of the angle display unit when the irradiation direction of the projector is changed.

As shown in FIG. 2, the light projector includes an arm 7 corresponding to a support, a lamp body 8, a lamp 9, a ballast 10, and an angle indicating section 11.

The arm 7 is a support member formed by bending an elongate flat plate member at two places to form a substantially U-shape. The arm 7 supports the lamp body 8 at two end portions.

The lamp body 8 is a substantially box-shaped body having a front surface opened to form a light emitting surface, and a lamp 9 which is turned on by a ballast 10 is provided therein. The lamp body 8 is rotatably supported on the arm 7 by a body fixing bolt 7a so as to be rotatable around the rotation support axis X. And the body fixing bolt 7
When a is loosened, the lamp main body 8 becomes rotatable with respect to the arm 7, and when the main body fixing bolt 7 a is tightened, the lamp main body 8 is fixed to the arm 7 so as not to rotate.

An openable and closable glass panel 8a is provided on the front surface of the lamp body 8 via a panel frame 8b, so that the glass panel 8a can be opened to replace a lamp 9 provided therein. An angle display section 11 is provided on one side surface of the lamp body 8.

As shown in FIG. 1, the angle display section 11 includes a scale plate 11a, a first mark 11b, and a second mark 1b.
1c and a scale plate fixing screw 11d.

The scale plate 11a is a circular plate body having an angle scale M centered on the rotation support axis X and having a central portion opened. The scale plate 11a is located between the arm 7 on the rotation support shaft X and the lamp body 8, and is fitted to a scale plate receiving portion 8c provided on a side surface of the lamp body 8. Also, the scale plate 11
In a, a long hole 11e is provided over about 150 degrees in the circumferential direction, and a scale plate fixing screw 11d can be inserted therethrough.

The scale plate receiving portion 8c is a circular frame having a shape for accommodating the scale plate 11a, and is provided at the upper end of the scale plate receiving portion 8c when the illumination direction of the lamp body 8 is horizontal. Mark 11c is marked. Also, the center position of the scale receiving portion 8c is made to coincide with the screw hole 8d of the main body fixing bolt 7a. The scale plate receiving portion 8c is configured such that the frame portion projects slightly toward the arm 7 from the surface of the scale plate 11a when the scale plate 11a is fitted.
1a is prevented from rubbing against the arm 7.

The scale plate 11 is located on a straight line connecting the second mark 11c and the screw hole 8d.
A screw hole 8e for the scale plate fixing screw 11d is provided at a radial position overlapping with the long hole 11e when a is fitted.
The second mark 11c indicates a rotation angle on the scale plate 11a.

The first mark 11b is marked on the tip of the arm 7. The first mark 11b indicates a posture return position on the scale plate 11a.

The scale plate 11a is fitted into the scale receiving portion 8c, and the scale plate fixing screw 11d is inserted into the long hole 11e and screwed into the screw hole 8e to fix the scale plate 11a.

In the projector thus constructed, the lamp body 8 is rotatable with respect to the arm 7, and the scale plate 11a is fixed to the lamp body 8 with the scale plate fixing screw 11d. Sometimes, it can rotate with the lamp body 8, and can rotate with respect to the lamp body 8 when the scale plate fixing screw 11d is loosened.

Next, a method of using the light projector having the above-described configuration will be described. First, in the initial state of the projector, as shown in FIG. 3, the axis of the glass panel 8a of the lamp body 8 and the axis of the arm 7 are substantially parallel. At this time, as shown in FIG. 4, the first mark 11b and the second mark 11b
c and the screw hole 8d are arranged on a straight line, and the scale plate 11a is in a state where the first mark 11b and the second mark 11c indicate "0" by the scale plate fixing screw 11d. It is fixed to.

Next, after the arm 7 is fixed to the installation surface, as shown in FIG. 5, the lamp body 8 is rotated so as to face a desired irradiation direction. FIG. 5 shows a state in which the lamp body 8 is turned slightly downward from the horizontal direction. Then, the scale plate receiving portion 8c, the second mark 11c, and the scale plate 11a rotate together with the lamp main body 8, and FIG.
As shown in FIG. 6, the first mark 11b indicates a value other than "0" of the scale M of the scale plate 11a (50 degrees counterclockwise in FIG. 6). Thereafter, the scale plate fixing screw 11d is loosened and the scale plate 11a is rotated so that the first mark 11b points to "0" of the scale M as shown in FIG. The setting at the time of installation is thus completed. At this time, the value of the scale M of the scale plate 11a indicated by the second mark 11c indicates how many times the lamp body 8 has rotated from the initial state. In FIG. 7, the second mark 11
Since c indicates 50 degrees clockwise, the lamp body 8 is in a state of being rotated 50 degrees from the initial state.

Next, when replacing the lamp 7 of the floodlight, the posture angle of the lamp body 8 is changed so that the irradiation direction is directed upward as shown in FIG. 8 because the work is inconvenient in the current posture. May be. In this case, the scale plate 11a also rotates by the rotation of the lamp body 8, and the first mark 1
1b indicates a value other than “0” of the scale M. FIG.
, The first mark 11b indicates a value of 60 degrees clockwise.

When the work such as replacement of the lamp 7 is completed, the lamp main body 8 is rotated so that the first mark 11b indicates the value M of the scale M, and then the main body fixing bolt 7 is turned on.
By tightening a, it is possible to return to the posture of the lamp body 8 before the start of work. Also, since the scale plate 11a does not rotate with respect to the lamp main body 8, the second mark 11c provided on the scale plate receiving portion 8c still indicates how many times the lamp main body 8 has rotated from the initial state. Is shown.

Therefore, in the light projector of this configuration, it is possible to know the attitude angle indicating how many times the lamp body 8 has been rotated since the initial state, and to easily change the attitude angle of the lamp body 8 even if it is changed. It can return to the previous posture angle. Further, since the regulating piece is not provided unlike the projector of the related art, the movable range of the lamp body 8 is not limited to be smaller than the original movable range of the lamp body 9.

Also, since the scale plate 11a is fitted to the scale plate receiving portion 8c so that the scale plate 11a does not rub against the arm 7, even if the lamp body 8 is rotated, the arm 7 and the scale plate 11a are connected to each other. It is possible to prevent the scale plate 11a from rotating and being erroneously shifted due to friction therebetween.

[0035]

According to the first aspect of the present invention, since the projector of the present invention is constructed as described above, the angle between the support and the lamp body about a rotation support shaft is set. A scale plate having a scale is provided, a first mark indicating a posture return position is provided on the scale plate on the support, a second mark indicating a rotation angle is provided on the scale plate on the lamp body, and the scale plate is provided. Can be fixed to the lamp body,
The posture angle indicating the number of rotations from the initial state of the lamp main body can be known, and even if the posture angle of the lamp main body is changed, the posture angle before the change can be easily returned, and the movable range of the lamp main body is the lamp main body. There is an effect that it is possible to provide a floodlight that can be rotated without being restricted to be narrower than the original movable range.

According to the second aspect of the present invention, since the scale plate is housed in the scale plate receiving portion of the lamp body, even if the lamp body is rotated, the scale plate is erroneously rotated and rotated. There is an effect that it is possible to provide a floodlight that can prevent such a situation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an angle display unit of a projector according to the present invention.

FIG. 2 is a perspective view showing an appearance of the light projector.

FIG. 3 is a side view showing an initial state of the projector.

FIG. 4 is a side view showing an angle display unit in an initial state of the projector.

FIG. 5 is a side view when the irradiation direction of the light projector is set.

FIG. 6 is a side view of the angle display unit when the irradiation direction of the light projector is set.

FIG. 7 is a side view of the angle display unit when the angle of the scale plate is adjusted according to the irradiation direction of the light projector.

FIG. 8 is a side view when the irradiation direction of the light projector is changed.

FIG. 9 is a side view of the angle display unit when the irradiation direction of the projector is changed.

FIG. 10 is a side view showing a configuration of a conventional light projector.

FIG. 11 is a main part side view showing an angle display unit of the light projector.

FIG. 12 is a side view of a main part showing another configuration of a conventional light projector.

FIG. 13 is a side view of a main part showing another configuration of a conventional light projector.

[Explanation of symbols]

 Reference Signs List 7 support body 8 lamp body 8c scale plate receiving portion 11a scale plate 11b first mark 11c second mark X rotation support shaft

Claims (2)

[Claims] 1. A support body, a lamp body having a light emitting surface on a front surface and attached to the support via a rotation support shaft,
Comprising a scale plate having an angular scale centered on a rotation support axis, between the support and the lamp body, On the support, a first mark indicating a posture return position is provided so as to face the angle scale, and the lamp body is provided with a second mark that rotates together with the lamp body and indicates a rotation angle of the lamp body,
A floodlight wherein the scale plate can be fixed to a lamp body. 2. The floodlight according to claim 1, wherein a scale plate receiving portion for storing the scale plate is provided in the lamp body.