JP3107469U - Mobile fluorescent lamp projector powered by battery - Google Patents

Abstract

Disclosed is a mobile projector that eliminates unevenness in light irradiation (lightness difference between the central part and the peripheral part) due to being a point light source, as well as noise and exhaust gas problems due to the fact that the power source is a generator. To provide.
A carriage 1 on which a rechargeable battery and an inverter type DC / AC power supply circuit connected to the battery are mounted; a telescopic mast 5 standing on one side of the carriage 1; Formed on the back and outer peripheral surfaces of a flat fluorescent lamp mounting portion on which a plurality of fluorescent lamps mounted on the upper end portion and connected to the power supply circuit can be mounted in a vertical plane, and the fluorescent lamp mounted thereon And a flat light source 10 having a light reflecting surface.
[Selection] Figure 1

Description

  The present invention relates to a projector that is used in site verification such as construction sites and disasters, and more particularly to a mobile projector that uses a fluorescent lamp as a light source.

  In the conventional mobile projector, a metal halide lamp (250 W or 400 W) is housed in a parabolic umbrella (reflector) in a lighting fixture, and a plurality (1 to 4 lights) are combined and used as a light source. This method is a method of illuminating an object (or place) by reflecting light using the lamp as a point light source with a parabolic reflecting surface, so that not only the irradiation range is narrow, but also the central part of the irradiation range. There is a drawback that a large difference occurs in brightness between the vicinity and the outer periphery.

  In addition, it is known that the metal halide lamp used for the light source is dazzled when it is directly turned on, and an afterimage remains on the retina, which hinders driving of the car. Furthermore, the temperature generated when the lamp is lit is high, and a cooling time of 15 minutes or more is required to turn it on again, so it cannot be turned on immediately (it cannot be turned on again). Yes.

  Moreover, since most of the conventional floodlights are motor generator type (engine generator type), noise and exhaust gas (with bad odor) cannot be avoided. Can not be used, but if used temporarily, it causes noise and odor problems. In addition, since exhaust gas is emitted during use, there is a disadvantage that it cannot be used indoors.

  Therefore, the present invention eliminates the above-mentioned problems in the conventional mobile projector, that is, the unevenness of light irradiation due to the point light source (lightness difference between the central part and the peripheral part), and the power source is the generator. It is an object of the present invention to provide a mobile projector that solves the problems of noise and exhaust gas.

  The structure of the mobile projector of the present invention made for the purpose of solving the above-mentioned problems includes a rechargeable battery, a dolly mounted with an inverter type DC / AC power supply circuit connected to the battery, and one side of the dolly A flat fluorescent lamp mounting portion on which a telescopic mast standing on the top of the mast and a plurality of fluorescent lamps that are attached to the upper end of the mast and are connected to the power supply circuit can be mounted in a vertical plane. A flat light source having a light reflecting surface formed on the back surface and the outer peripheral surface of the mounted fluorescent lamp is provided.

  The flat light source in the mobile projector of the present invention can be arbitrarily changed in its vertical position (height), orientation in the plane (plane angle), and orientation in the vertical plane (elevation angle). It has a possible structure.

  Moreover, the projector of the present invention includes an outlet that can be used as a general commercial power source.

  The mobile projector of the present invention is a battery-type fluorescent lamp projector, so that 10 twin fluorescent lamps (55W) with high luminous efficiency are arranged in parallel and housed in one flat reflector. Since the lighting system is based on an electronic ballast circuit, a flicker-free surface light source can be formed. Therefore, the irradiation range can be greatly expanded and a wide range can be illuminated uniformly. Thereby, it is possible to perform illumination that covers the range of several conventional projectors with one projector of the present invention. In addition, since the light source lamp is a fluorescent lamp, there is no problem of glare even if it is directly viewed, and illumination that is gentle to the eyes can be realized.

  In addition, the brightness can be controlled in stages by changing the number of fluorescent lamps mounted on a flat reflector from 1 to 10 with a changeover switch. Further, it is possible to operate with reduced power by reducing the number of lighting and lighting. The lifetime of the fluorescent lamp used in the projector of the present invention is about 9000 hours, which is almost the same as that of a metal halide lamp. .

  In the battery type fluorescent lamp projector of the present invention, the battery is used as a power source and converted to normal AC 100V by an inverter and the fluorescent lamp is turned on, so there is no noise and no problem of exhaust gas. Therefore, it can be used safely and quietly in various event venues and disaster prevention facilities such as places where many people gather, work sites, indoors and quiet residential areas.

  In addition, by using a large-capacity battery that can be charged in a short time, it can be lit for up to 16 hours with a single charge (in the case of 10 55-inch lamps, 24V, approximately 400Ah), so in the event of a disaster, etc. It can also fulfill its role as a disaster prevention device.

  Furthermore, since the projector of the present invention is provided with an outlet that can also be used as a power supply device for 100 VAC general electrical equipment, it can be used by connecting home appliances and electrical equipment to the outlet in the event of a power failure due to a disaster. Moreover, since the commercial power supply (100V) can be used for charging the mobile projector of the present invention, it is much more economical than the conventional generator-type projector.

  Next, an embodiment of the mobile projector according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an example of the mobile projector of the present invention as viewed from the back side, FIG. 2 is a front view of a planar light source unit in the mobile projector of the present invention, and FIG. 3 is a block diagram of an example of a power supply circuit.

  In FIG. 1, reference numeral 1 denotes a carriage having wheels 2 at four corners. On the upper surface of the carriage 1, a plurality of batteries are detachably stored and a casing 3 containing a power circuit is mounted. Yes. Note that the battery and the power supply circuit are not shown in the figure.

  A vertical cylindrical column 4 is erected at the center of one end side (right side in FIG. 1) of the carriage 1, and a telescopic mast 5 is coaxially accommodated in the column 4. Further, in the example of the cart 1 shown in the figure, two telescopic or foldable outriggers 6 for preventing overturning are provided on the same side as the column 4 and a brake 2a acting on the wheel 2 is provided. A pedal operation pedal 2b is provided.

  A handle 7 that is gripped when the carriage 1 is moved is provided on the upper portion of the mast 4, and a manual winch 8 that extends and retracts the telescopic mast 5 is provided. The handle 7 is provided to rotate the handle 7 to steer the two wheels 2 on the right side of the carriage 1 and push and pull the carriage 1 via a steering link not shown in the figure. .

  A head 9 is provided on the top of the telescopic mast 5, and a projector body 10 having a fluorescent lamp mounted on the front surface of a flat reflector is mounted on the head 9 in this case. ) Through the elevation angle adjusting unit 11 by adjusting the meshing position. In the elevation angle adjusting unit 11, a hydraulic cylinder 11a is installed between the pan head 9 and the rear surface of the projector body 10 as a supplement means for changing the elevation angle. Further, the projector body 10 has a lower portion of the support leg 10a coupled to the elevation angle adjusting unit 11, and the projector body 10 is supported on the back surface of the projector body 10 via a bearing part 10b. Thus, the head can be swung (plane angle adjustment) in an arbitrary direction within the plane.

  As illustrated in FIG. 2, here, ten twin straight tube type fluorescent lamps 12 are arranged in parallel in the vertical direction on the front surface of the projector body 10. 12 a is a base of each fluorescent lamp 12. When viewed from the front, which forms the main body 10, the rectangular flat reflector has an outer peripheral portion 10c on the front side and a back surface 10d of each fluorescent lamp 12 formed on a light reflecting surface and a light diffusing surface.

  The power supply circuit 20 housed in the housing 3 on the carriage 1 has the configuration shown in FIG. 3 as an example. That is, the power supply circuit 20 includes an oscillating unit 21 that oscillates at an appropriate frequency, an output amplifying unit 22 mainly composed of an amplifier that amplifies the output, and a direct current of a battery (power source) using the AC output of the amplifying unit 21. A D / A converter 23 for converting the output into alternating current, a current detector 24 for detecting the input / output current of the amplifier 22, and a controller 25 for controlling the output current, A light source outlet 26 connected to the output terminal of the D / A converter 23 and an AC100V outlet 27 branched from the outlet through a switching circuit (not shown) are provided.

  Both outlets 26 and 27 are plugged into one outlet 26 or 27 with a predetermined plug (the light source outlet 26 has a light source cable plug and the AC100V outlet 27 has an electrical equipment cable plug). With the plug action of the inserted plug, the plug outlet of the other outlet 27 or 26 is mechanically blocked, or the circuit to the outlet is electrically cut off, invalidated, incorrect connection or double It is desirable to avoid connections automatically. Such a function can also be manually formed by a changeover switch or the like.

  The mobile projector of the present invention configured as described above is used in the same manner as a conventional known projector, but since it is a surface light source in which a plurality of straight tube fluorescent lamps are installed as a light source, the irradiation range of illumination light is It is not only wide, but can be illuminated with uniform brightness with almost no difference in brightness between the irradiation center and the peripheral portion, and is therefore extremely useful as an illumination light source.

  In addition, since the light source is formed by a commercially available straight tube fluorescent lamp, it can be obtained easily and at a low cost, and once it is turned off like a conventional metal halide lamp, it cannot be turned on again for more than 15 minutes until it cools down. Absent.

  Furthermore, since the motor is not used, there is no problem of noise and exhaust gas. Therefore, it can be used indoors in an emergency or used as a general commercial power source.

The perspective view which looked at an example of this invention movable light projector from the back side. The front view of the planar light source part in this invention mobile light projector. The block diagram of an example of a power supply circuit.

Explanation of symbols

1 cart 2 wheels 3 housing 4 post 5 telescopic mast 6 outrigger 7 handle 8 manual winch 9 pan head
10 Floodlight body
11 Elevation adjustment section
12 Fluorescent light
20 Power circuit

Claims (4)

  A cart mounted with a rechargeable battery, an inverter type DC / AC power circuit connected to the battery, a telescopic mast standing on one side of the cart, and the power circuit mounted on the upper end of the mast A flat fluorescent lamp mounting portion on which a plurality of fluorescent lamps that are lit and connected can be mounted in a vertical plane, and a flat plate shape having a light reflecting surface formed on the back and outer peripheral surfaces of the fluorescent lamp mounted on the fluorescent lamp mounting portion A mobile fluorescent lamp projector that uses a battery as a power source.   The flat light source has a structure in which the vertical position (height), the direction in the plane (plane angle), and the direction in the vertical plane (elevation angle) can be arbitrarily changed. A mobile fluorescent lamp projector that uses the battery of item 1 as a power source.   The power supply circuit mounted on the carriage is a mobile fluorescent lamp projector that uses a battery as a power source according to claim 1 or 2 having an outlet that can also be used as a commercial power source. The power supply circuit has an outlet for a flat light source and an outlet for commercial power. When a cable plug is inserted into one of the outlets, the plug connection to the other outlet is mechanical and / or electrical. A mobile fluorescent lamp projector using the battery according to claim 1 as a power source.

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