JP2010135096A - Floodlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floodlight which obtains high operability by smoothly carrying out control in the illuminating direction without being impeded by a power supply cable. <P>SOLUTION: The floodlight is provided with an illumination unit body having a light source unit provided with a light source lamp and a reflecting mirror and an optical system composed by a lens mechanism and a light control mechanism arranged inside a casing with a light emitting opening which opens in the front. In this case, the illumination unit body is supported to be able to be rocked around a rocking shaft which extends in the horizontal direction so that the light emitting opening faces all direction within a specific range and at the same time, able to be rotated around the shaft that extends in a perpendicular direction by a supporting stand. A connector section for connecting a power supply cable for supplying power from an outside power source is provided to be able to be rocked around the shaft which extends horizontally in parallel to the rocking shaft in the process where the floodlight body is rocked at a bottom section of the casing in the floodlight. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a light projecting device such as a spotlight used for realizing a desired production effect in, for example, a theater, a studio, a hall, and the like.

  In general, for example, in theatrical stage lighting, a specific position on the stage may be locally illuminated by a light projection device (illumination device) such as a spotlight in order to achieve the desired effect on the stage. Has been done. When the object to be illuminated on the stage is a human or other moving object, or when illuminating a specific position based on the position of such a moving body, for example, a light projecting device The operator performs control to change the illumination direction of the light projector according to the movement of the moving body while visually confirming the movement of the moving body.

  As for such a light projecting device, various configurations have been proposed so far (see, for example, Patent Document 1), and in a certain type, as shown in FIGS. The main body 70 is supported by the support 90 so as to be rotatable about a rotation center axis C4 extending in the vertical direction (vertical direction in FIG. 6) and in the horizontal direction (direction perpendicular to the paper surface in FIG. 6). It is supported so as to be swingable about an extending swinging central axis C5.

The light projecting device main body 70 includes a casing 71 having a rectangular tube shape that is long in the front-rear direction and has a light emitting port 70A that opens forward. A light source device 73 composed of a light source lamp (discharge lamp) 74 and a reflecting mirror 76 having, for example, an elliptical reflecting surface for condensing light emitted from the light source lamp 74 is disposed, and light in the casing 71 is also disposed. An optical system composed of a lens mechanism including two lenses, a front lens 80 and a rear lens 82, and a light control mechanism 85 for obtaining a desired effect is disposed in the front region in the irradiation direction. . A cooling mechanism 78 is provided for cooling the light source lamp 74 and the reflecting mirror 76 with cooling air when the light source lamp 74 is turned on.
All the components of the light source lamp 74, the reflecting mirror 76, the lens mechanism, and the light control mechanism 85 are in a state in which the optical axes L coincide with each other.

At the bottom of the casing 71, there is a connecting portion to which a power supply cable 96 made of, for example, a cabtire cable is connected to the light source lamp 74 from an external power source on the outer surface side of a fixed plate 95 fixed integrally with the casing 71. The formed connector part 95A for connection is provided.
Further, although not shown, a power supply line connected to the light source lamp 74 is electrically connected on the inner surface side of the fixed plate 95.

JP 2002-25305 A

  As described above, the light projecting device main body 70 is rotated (panned) in the horizontal plane around the rotation center axis C4, and is thus swung around the swing center axis C5 extending in the horizontal direction. In the light projecting device configured as described above, the fixing plate 95 in the connection connector portion 95A to which the power feeding cable 96 is connected is fixed to the casing 71. Therefore, when the illumination direction is controlled, the rotating operation and the swinging operation of the projector main body 70 are hindered by the weight of the power supply cable 96 or the low flexibility (low deformation) of the power supply cable 96. There is a problem that. In particular, when the projector main body 70 is swung around the swing center axis C5, the influence of the power supply cable 96 is greatly affected.

  The present invention has been made based on the circumstances as described above, and is capable of smoothly controlling the illumination direction without being obstructed by the power feeding cable, and can obtain high operability. The purpose is to provide.

In the light projecting device of the present invention, a light source device including a light source lamp and a reflecting mirror, and an optical system including a lens mechanism and a light control mechanism are arranged in a casing having a light exit opening that opens forward. The lighting device body is configured to be swingable about a swinging shaft extending in a horizontal direction so that the light emitting port faces in all directions within a specific range by a support base, and the lighting device body is vertically In the light projecting device supported so as to be rotatable around an axis extending in the direction,
A connecting connector portion to which a power supply cable for power supply from an external power source is connected is a shaft extending in a horizontal direction in parallel with the swing shaft in the process of swinging the light projecting device body at the bottom of the casing. It is provided so as to be swingable around.

In the light projecting device of the present invention, the support base includes a support column that is rotatable around a central axis extending in the vertical direction so as to pass through the center of gravity of the light projecting device main body.
It is preferable that the swinging central axis of the connecting connector portion is positioned near the rotation central axis of the support in the longitudinal direction of the casing.

  Furthermore, in the light projecting device of the present invention, a light source lamp having a lamp power of 1 kW or more can be used.

  According to the light projecting device of the present invention, the connection connector portion is swung by its own weight in the process of swinging the light projecting device main body when controlling the illumination direction. The balance with respect to the main body can be maintained, and the illumination direction can be controlled smoothly without being obstructed by the power supply cable.

  The swinging central axis of the connector part for connection is configured to be positioned in the vicinity of the rotation central axis of the column in the support base that supports the light projecting device body at the center of gravity in the longitudinal direction of the casing. Thus, it is possible to suppress the influence on the operability due to, for example, the weight of the power supply cable when controlling the illumination direction, and it is possible to more smoothly perform a smooth operation.

1 is a side view showing an outline of the configuration of an example of the light projecting device of the present invention, FIG. 2 is a bottom view of the light projecting device main body in the light projecting device shown in FIG. 1, and FIG. 3 is a light projecting device shown in FIG. FIG. 4 is a rear view of the optical device, and FIG. 4 is a side view schematically showing the internal structure of the light projecting device main body in the light projecting device shown in FIG.
The light projecting device main body 10 has a vertical direction (in FIG. 1) by the support base 65 so that the light emitting port 10A of the light projecting device main body 10 can face every direction within a specific range. It is supported so as to be rotatable in a horizontal plane around a rotation center axis C1 extending in the vertical direction), and can swing around a swing center axis C2 extending in the horizontal direction (direction perpendicular to the paper surface in FIG. 1). Is supported and configured.

The support base 65 includes a column 66 that is rotatable about a rotation center axis C <b> 1 that extends in the vertical direction so as to pass through the center of gravity of the light projecting device main body 10, and an upper end portion that is fixed to the upper end portion of the column 66. Is provided with a plate-like support arm 67 extending upward, and the swing shaft 13 extending horizontally at the outer position on each of both side portions of the light projecting device main body 10 is rotatably supported by the support arm 67. Has been.
1 and 3, 68A is a locking lever that prohibits rotation of the light projecting device body 10 in a horizontal plane, and 68B is a locking lever that prohibits swinging of the light projecting device body 10 around a horizontal axis. 68C is a locking lever for fixing the height position of the light projecting device body 10, and when the locked state is released, the light projecting device body 10 is rotated (panned) in the horizontal plane, and the horizontal axis. The surrounding rocking (tilt) and height adjustment are possible.

  The light projecting device main body 10 includes a substantially cylindrical casing 11 that is long in the front-rear direction and has a light exit port 10A that opens to the front. The light irradiation direction rear region in the casing 11 is a light source device arrangement region. 11A and the front side region in the light irradiation direction is an optical system arrangement region 11B.

  In the casing 11, a positioning support member composed of two rod-shaped rail members 38 extending in parallel with each other along the light irradiation direction is provided not only in the optical system arrangement area 11B but also behind the optical system arrangement area 11B. It extends beyond the end to the optical device arrangement region 11A and extends over the entire longitudinal direction of the casing 11, and is provided with a lamp holding mechanism (air cooling duct 33), a reflector holding member 45, and a front lens holding member. The member 51, the rear lens holding member 53, and the constituent members of the light control mechanism are all attached to the rail member 38, which is a common positioning support member, and are linearly arranged with the optical axes L coincident with each other. Yes.

  The light source device 20 includes a reflecting mirror 21 having a light emission port 21A in the front, a light source lamp 25 made of, for example, a both-end sealed xenon lamp (discharge lamp), and a light source lamp 25 and a reflection when the light source lamp 25 is turned on. And a cooling mechanism 30 for cooling the mirror 21 with cooling air. Here, the light source lamp 25 has, for example, a lamp power of 1 kW or more, and is configured to be lit by being supplied with a current of about 35 to 45 A via a light source lamp power supply cable 101 described later. It has been.

The cooling mechanism 30 is provided at a lower position in the light source device arrangement area 11 </ b> A in the casing 11 and at an upper position in the light source apparatus arrangement area 11 </ b> A in the casing 11, and the blower fan 31 provided so that the air outlet faces upward. An exhaust fan (not shown) and an air cooling duct 33 made of, for example, a casting connected to the blower opening of the blower fan 31 are configured.
The air cooling duct 33 has a rectangular tube-like vertical portion 33A whose lower end is connected to the air outlet of the blower fan 31 and extends in the vertical direction, and the internal space communicates with the vertical portion 33A so that the cooling air is supplied to the bulb of the light source lamp 25. And a substantially cylindrical horizontal portion 33 </ b> B extending in the horizontal direction, which is supplied to flow along the outer surface.

  Bearing portions 34 through which each of the two rail members 38 are inserted are formed on both side portions of the lower end portion of the vertical portion 33A of the air cooling duct 33, and the light source lamp 25 is provided at the rear end of the horizontal portion 33B. A lamp fixing chuck 40 is attached to hold and fix the light source in a posture in which the optical axis extends in the horizontal direction. Thus, a lamp holding mechanism for holding and fixing the light source lamp 25 is configured.

The light source lamp 25 has a base provided on one sealing portion held and fixed by a lamp fixing chuck 40 in a state where one sealing portion is inserted into the horizontal portion 33B of the air cooling duct 33. Therefore, it is positioned with respect to the rail member 38.
The lamp fixing chuck 40 has a function of finely adjusting the position of the light emitting portion of the light source lamp 25 in the vertical direction, the horizontal direction, and the front-back direction.

  The reflecting mirror 21 is, for example, an elliptical reflecting mirror having a reflecting surface constituted by a part of a rotating ellipsoid, and its optical axis coincides with the arc direction of the light source lamp 25 and the focal position is an arc of the light source lamp 25. Each of the two rail members 38 is held and fixed by the reflecting mirror holding member 45 attached to the rail member 38 in a state where the two rail members 38 are inserted into the bearing portion 46 </ b> A in a state matching the generating portion.

  Further, in the light source device arrangement region 11A, a heat ray reflection filter 15 that reflects infrared rays that are emitted directly from the light source lamp 25 or reflected by the reflecting mirror 21 is provided.

  The optical system configured in the optical system arrangement region 11B includes a front lens 50 that adjusts a spot diameter formed in the illumination region, a front lens holding member 51 that holds the front lens 50, and a spot formed in the illumination region. A desired effect provided at a position between the light source device 20 and the rear lens 52, and a lens mechanism constituted by the rear lens 52 for adjusting the focus and the rear lens holding member 53 for holding the rear lens 52. And a light control mechanism for obtaining an effect.

  Both the front lens holding member 51 and the rear lens holding member 53 can be adjusted in position in the optical axis direction (front-rear direction in FIG. 4) with each of the two rail members 38 inserted (in the optical axis direction). The front lens 50 and the rear lens 52 are moved along the rail member 38 via a lens position adjusting mechanism (not shown) by moving the lens mechanism adjusting lever 55 in the front-rear direction. Both the positions in the optical axis direction are adjusted by sliding, and by rotating the rear lens position adjusting handle 56, only the rear lens 52 is slid along the rail member 38 via a lens position adjusting mechanism (not shown). Thus, the position in the optical axis direction is adjusted.

  The light control mechanism of the light projecting device in this embodiment includes a first cutter device (dausa cutter) 60 that performs mechanical light control by rotating the operating rod 60A around an axis extending in the horizontal direction, and the first cutter device 60. The second cutter device 61 is located on the front side of the cutter device 60 in the light irradiation direction, and performs mechanical light shielding by rotating the operating rod 61A around an axis extending in the horizontal direction, and the second cutter. The shutter 61 is located on the front side of the light irradiation direction of the device 61 and adjusts the spot diameter formed in the illumination area by rotating the operating rod 62A around the axis extending in the horizontal direction. The first cutter device 60, the second cutter device 61, and the shutter device 62 are all attached with the two rail members 38 inserted therethrough.

  Thus, in the light projecting device, the connection connector portion (power feeding portion) 17 to which the power feeding cable for receiving the operation power from the external power supply is connected is projected at the bottom of the casing 11. In the process in which the apparatus main body 10 is swung (tilted), it is provided so as to be able to swing around a swing center axis C3 extending in the horizontal direction in parallel with the swing center axis C2.

The connection connector portion 17 is connected to a power supply cable (hereinafter referred to as a “light source lamp power supply cable”) 101 for supplying power to the light source lamp 25 on the outer surface side of the substantially box-shaped base body 17A having one opening. A power supply cable for power supply for operation control (hereinafter referred to as “power supply cable for operation control”) 102 of the blower fan 31, the exhaust fan and other components is connected to the power supply cable connection portion 18A for the light source lamp. The motion control power supply cable connecting portion 18B is formed at a position aligned along the swing center axis C3, and the swing shaft extends horizontally outwardly from the outer surfaces of the opposite side portions of the base body 17A. 17B is pivotally supported by the casing 11 so as to be swingable.
Although not shown, the light source lamp 25 is electrically connected to the light source lamp power supply cable connection portion 18A by a power supply line connected on the inner surface side of the base body 17A, and the blower fan 31 and other configurations are also provided. The member is electrically connected to the operation control power supply cable connecting portion 18B.

  The swinging central axis C3 of the connecting connector portion 17 is positioned in the vicinity of the rotational central axis C1 of the support column 66 on the support base 65 in the front-rear direction of the casing 11, specifically within a range of, for example, 10 cm. . With such a configuration, it is possible to suppress the influence on the operability due to, for example, the weight of the power supply cables 101 and 102 when controlling the illumination direction, and a smooth operation can be performed.

  Each of the light source lamp power supply cable 101 and the operation control power supply cable 102 is formed of, for example, a cabtire cable. For example, the light source lamp power supply cable 101 has an outer diameter of φ16 mm and a weight per meter. The operation control power supply cable 102 has an outer diameter of φ15 mm and a weight per meter of 280 g.

  As described above, in the light projecting device, the light projecting device main body 10 is rotated (panned) in the horizontal plane around the rotation center axis C1, or is swung around the swing center axis C2. The illumination direction is controlled by (tilting) or by combining these operations (panning and tilting).

Thus, according to the light projecting device having the above-described configuration, when the illumination device main body 10 is swung downward, for example, when the illumination direction is controlled, as shown in FIG. In the process in which the apparatus main body 10 is swung, the connecting connector portion 17 is swung in the light projecting apparatus main body 10 by the weight of the light source lamp power supply cable 101 and the operation control power supply cable 102 (in FIG. As a result, the light source lamp power supply cable 101 and the operation control power supply cable 102 are fixed in a reference state (the projector main body 10 is fixed in a horizontal posture) indicated by broken lines. The same state as that of the light projecting device main body 10, which extends in a direction (downward) perpendicular to the outer surface of the base body 17 </ b> A of the connection connector portion 17. , Obedience Te, the control of the lighting direction, without greatly influenced by its own weight or a low flexibility of the light source lamp power supply cable 101 and an operation control for power supply cable 102, can be smoothly performed.
Similarly, when the light projecting device main body 10 is swung upward, as shown in FIG. 5B, in the process of swinging the light projecting device main body 10, the connecting connector portion 17 is As a result of the weight of the light source lamp power supply cable 101 and the operation control power supply cable 102 being swung in a direction (clockwise) opposite to the swinging direction of the light projecting apparatus body 10 (counterclockwise in FIG. 5B). The light source lamp power supply cable 101 and the operation control power supply cable 102 are in the same state as the reference state indicated by the broken line (the state where the light projecting device body 10 is fixed in a horizontal position), the base 17A of the connector part 17 for connection. Thus, a state (a balanced state with respect to the light projecting device main body 10) extending in a direction (downward) perpendicular to the outer surface of the projector is maintained. Without greatly influenced by its own weight or a low flexibility of operation control for power supply cable 102, it can be smoothly performed.
It should be noted that in the control of the illumination direction by the rotating operation of the light projecting device main body in the horizontal plane, the influence of the light source lamp power supply cable 101 and the operation control power supply cable 102 is larger than the case where the light projecting device main body is swung. Since it is small, the illumination direction can be controlled substantially smoothly.

  As described above, according to the light projecting device of the present invention, the illumination direction can be controlled smoothly without being greatly affected by the power supply cable. For example, a large current is input as the light source lamp 25. For example, in a configuration in which the lamp power is 1 kW or more, in other words, in a configuration in which power is supplied from an external power source via a power supply cable configured to be able to input a large current, Very useful.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment, A various change can be added.

It is a side view which shows the outline of a structure in an example of the light projector of this invention. It is a bottom view of the light projector main body in the light projector shown in FIG. It is a rear view of the light projector shown in FIG. It is a side view which shows the outline of the internal structure of the light projection apparatus main body in the light projection apparatus shown in FIG. It is explanatory drawing which shows the operation state in an example of control of an illumination direction. It is explanatory drawing which shows the operation state in the other example of control of an illumination direction. It is a side view which shows the outline of a structure in an example of the conventional light projector. It is a side view which shows the outline of the internal structure of the light projection apparatus main body in the light projection apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Projection apparatus main body 10A Light emission port 11 Casing 11A Light source device arrangement | positioning area | region 11B Optical system arrangement | positioning area | region 13 Oscillating shaft 15 Heat ray reflective filter 17 Connector part for connection (feeding part)
17A Substrate 17B Oscillating shaft 18A Power supply cable connection part for light source lamp 18B Power supply cable connection part for operation control 20 Light source device 21 Reflector 21A Light emission port 25 Light source lamp 30 Cooling mechanism 31 Blower fan 33 Air cooling duct 33A Vertical part 33B Horizontal Part 34 Bearing part 38 Rail member 40 Lamp fixing chuck 45 Reflector holding member 46A Bearing part 50 Front lens 51 Front lens holding member 52 Rear lens 53 Rear lens holding member 55 Lens mechanism adjustment lever 56 Rear lens position adjustment handle 60 First Cutter device (Dausa cutter)
61 Second cutter device 62 Shutter device 60A, 61A, 62A Control rod 65 Support base 66 Support column 67 Support arm 68A (for prohibiting panning) Locking lever 68B (for tilting prohibition) Locking lever 68C (Prohibiting movement in the height direction) Lever for locking 70 Projecting device body 71 Casing 71A Light exit port 73 Light source device 74 Light source lamp 76 Reflecting mirror 78 Cooling mechanism 80 Front lens 82 Rear lens 85 Light control mechanism 90 Support base 95 Fixing plate 95A Connector portion 96 Power supply cable 101 Power supply cable for light source lamp 102 Power supply cable for operation control L Optical axis C1 Rotation center axis C2 Oscillation center axis C3 Oscillation center axis C4 Rotation center axis C5 Oscillation center axis

Claims (3)

In a casing having a light exit opening that opens forward, a light source device including a light source lamp and a reflecting mirror, and an illuminating device body in which an optical system configured by a lens mechanism and a light control mechanism is disposed, The illuminating device body can be swung around a swinging shaft extending in the horizontal direction and rotated around a shaft extending in the vertical direction so that the light exit port faces all directions within a specific range by the support base. In a light projector that is supported,
A connecting connector portion to which a power supply cable for power supply from an external power source is connected is a shaft extending in a horizontal direction in parallel with the swing shaft in the process of swinging the light projecting device body at the bottom of the casing. A light projecting device, wherein the light projecting device is swingable around. The support base includes a support column that is rotatable around a central axis that extends in a vertical direction so as to pass through the center of gravity of the light projecting device body.
2. The light projecting device according to claim 1, wherein the swinging central axis of the connection connector portion is positioned in the vicinity of the rotation central axis of the support in the front-rear direction of the casing.   3. The light projecting device according to claim 1, wherein the light source lamp has a lamp power of 1 kW or more.

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