JP2012209146A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector capable of stably being used on a railroad.SOLUTION: In the projector 1A including an expandable support 19 erected on a carriage 4, and a projection section 2 arranged on a tip of the expandable support 3, the carriage 4 has wheels 8 used for a general road surface capable of running on a general road surface, and wheels 6 used for a railroad capable of running on two rails 7 arranged in parallel. The wheels 6 for a railroad are electrically isolated between right and left rail contact surfaces in a moving direction.

Description

  The present invention relates to a projector used for outdoor work illumination, and more particularly to a projector that can be used for maintenance and inspection work of railway facilities.

  In general, maintenance and inspection work for facilities on railways is often performed at night after the end of vehicle operation. This outdoor work in the night time requires lighting to illuminate the work site, but in such a night work site, in recent years, a floodlight has been secured using metal halide lamps for road construction. The machine is well known. Therefore, it is desired to use these construction floodlights for railways, particularly on railways.

  Conventionally well-known floodlights for road construction have insufficient installation stability and are difficult to move when installed on gravel and sleepers on railway tracks. In addition, a floodlight intended for use in railways has been proposed (for example, Patent Document 1).

JP 2010-20934 A

  However, since the above-mentioned Patent Document 1 is installed on one rail, it is unstable when moving, and further, when the irradiation part is extended to a high degree, it is easily affected by crosswinds and has a problem that the tipping resistance is inferior. .

  In view of the above problems, an object of the present invention is to provide a projector that can be used stably on a railroad rail.

  The invention according to claim 1 of the present invention is a floodlight including an extendable strut erected on a cart and a light projecting portion provided at a tip of the telescopic prop. The cart is on a general road surface. A general road surface wheel capable of traveling and a rail wheel capable of traveling on two rails arranged in parallel are provided, and the rail wheel is electrically connected between the left and right rail contact surfaces with respect to the moving direction. It is characterized by being electrically insulated.

  The invention according to claim 2 of the present invention is characterized by comprising an arm that can be folded on the carriage, and the rail wheel is pivotally supported at the tip of the arm.

  The invention according to claim 3 of the present invention is characterized in that an arm removably provided on the carriage is provided, and the rail wheel is pivotally supported at the tip of the arm.

  The invention according to claim 4 of the present invention is characterized in that the arm is formed to be extendable.

  The invention according to claim 5 of the present invention is characterized in that the rail wheel is formed of an insulating material.

  The invention according to claim 6 of the present invention is characterized in that a bearing portion provided between the arm and the rail wheel is formed of an insulating material.

  The invention according to claim 7 of the present invention is characterized in that a hinge portion provided between the arm and the carriage is made of an insulating material.

  The invention according to claim 8 of the present invention is characterized in that a light receiving unit for a projector is provided on the carriage.

  The invention according to claim 9 of the present invention is characterized in that a light source for a projector is mounted on the carriage.

  The invention according to claim 10 of the present invention is characterized in that a shield portion is provided between the carriage and the power supply for the projector.

  According to the present invention, by being configured to be able to travel on two rails, it is possible to significantly improve stability compared to the conventional case of traveling on one rail.

It is a front view which shows the whole structure of the projector which concerns on 1st Embodiment. It is a side view which shows the use condition of the projector which concerns on 1st Embodiment. It is a figure which shows the accommodation state of the light projector which concerns on 1st Embodiment, (A) Front view, (B) Side view. It is a perspective view which shows the whole structure of the projector which concerns on 2nd Embodiment. It is a perspective view which shows the accommodation state of the light projector which concerns on 2nd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1. First Embodiment (Overall configuration)
The projector 1 </ b> A includes a cart 4, a telescopic column 3 supported by the cart 4, a lighting device 2 provided at the tip of the telescopic column 3, and a power supply unit 5 that supplies power to the lighting device 2. Is provided. Electric power is supplied from the power supply device 5 to the lighting device 2 held at a predetermined height by the telescopic support column 3 to turn on the lighting device 2 and irradiate the surroundings with light.

The carriage 4 is provided with a handle 12, a column mounting portion 19, a general road surface wheel 8, a rail wheel 6, and a suspension hook 22.
The column attachment part 19 is configured to fix the base end of the telescopic column 3. Four general road wheels 8 are arranged at each of the four corners of the carriage 4 in total.

  A total of four rail wheels 6 are also arranged at each of the four corners of the carriage 4. Hinge portions 9 are provided at the four corners of the carriage 4, and a base end of an arm 10 is pivotally supported on the hinge portion 9, and a rail wheel 6 is provided at a distal end of the arm 10 via a bearing portion 25. A guide groove 26 is further formed in the hinge portion 9. The guide groove 26 is formed in an arc shape centering on the hinge portion 9, and is formed so that one end is a deployment position of the arm 10 and the other end is a storage position of the arm 10. Although not shown, the hinge portion 9 is provided with a fixing portion that fixes the arm 10 in the rotational direction.

  The arm 10 is pivotally supported by the hinge portion 9 so as to be able to turn in the lateral direction of the carriage 4 around the base end. The arm 10 is further provided with a guide shaft 27 that slides in the guide groove 26 on the base end side.

  The rail wheel 6 is arranged on two rails 7 arranged in parallel when the arm 10 is developed in the lateral direction. The rail wheel 6 is made of an insulating material, for example, a polymer material. Specifically, the rail wheel 6 is made of a material called engineer plastic excellent in toughness and wear resistance. Similarly to the rail wheel 6, the hinge portion 9 and the bearing portion 25 are also made of an insulating material.

  Since the rail wheel 6 spreads over the width of the rail 7, the lateral tipping resistance of the projector 1A is very good, but is slightly inferior in the traveling direction. In order to compensate for this, an outrigger 14 well known in the art may be attached. The outrigger 14 is provided so that the base end can slide in a vertical direction on a sliding shaft 18 erected on the carriage 4 and can rotate in parallel with the ground around the sliding shaft 18. . A fixing knob 15 is provided at the base end of the outrigger 14, and a rubber foot 16 is attached to the tip, so that it can be insulated from other members that have come into contact. Further, the outrigger 14 is deployed and installed between the rails 7, but it is desirable to cover the surface with an insulating tube 17 in order not to short-circuit the two rails 7 even if the outrigger 14 is inadvertently contacted with the rail 7 at that time.

  Further, when the projector 1A is used, by deploying the outrigger 14, not only the fall resistance in the traveling direction of the carriage 4 is improved, but also the carriage 4 hits a sleeper even if the carriage 4 is inadvertently moved. It is also possible to stop the movement.

  The telescopic support column 3 is made up of a plurality of metal tube columns having different sizes, and the inner tube columns having a small diameter are sequentially included, and this can be slid to fix the lighting device 2 to a desired height. I can do it. In the case of this embodiment, the tube pillar is cylindrical.

  The illumination device 2 is a balloon type. This illuminating device 2 is of a type in which an irradiation lamp (not shown) is covered with a balloon-like translucent member and irradiates the entire periphery of the light source.

  The power source required for light irradiation of the lighting device 2 can be supplied with power from the power receiving unit 11 using a general commercial power source. However, from the purpose of use of the projector 1A, a generator or It is preferable to place a power supply device 5 such as a battery, use this as a power supply, and connect the power receiving unit 11 because the usability is better and the center of gravity of the projector 1A as a whole is lowered, so that the overturning stability is improved.

  Some recent generators used for the projector power supply are equipped with an inverter to adjust the waveform of the power supply current, but the generator equipped with the inverter is installed between the rails 7 because of the large generation of electromagnetic noise. Since there is a possibility of adversely affecting the ground unit of the train automatic control device, the shield unit 13 is provided on the carriage 4 on which the generator is mounted. Although the shield part 13 should just be a metal material, it is desirable to use an iron plate from a cost and intensity | strength surface. The thickness of the iron plate is preferably 2 mm or more, preferably 3 mm or more in order to ensure the shielding effect.

(Function and effect)
Next, the operation and effect of each part of the projector 1A according to this embodiment will be described. As shown in FIGS. 1 and 2, the projector 1 </ b> A is lifted by hanging a wire (not shown) on the hanging hook 22 in a state where the arm 10 is expanded in the lateral direction. The projector 1A is placed on the rail 7 by disposing the rail wheels 6 on the two rails 7, respectively. Accordingly, by operating the handle 12, the projector 1A can travel on the rail 7.

  Thus, the projector according to the present embodiment is configured so as to be able to travel on one or two rails 7, thereby significantly improving stability compared to the conventional case of traveling on one rail. can do. Furthermore, since the projector 1A can prevent the fall in the traveling direction by deploying the outrigger 14, it can travel on the rail 7 more stably.

  Since the arm 10 is configured such that the guide shaft 27 slides in the guide groove 26 provided in the hinge portion 9, the arm 10 is more accurately and easily deployed at a predetermined deployment and storage position. Can be stored. The arm 10 is fixed in the rotational direction by a fixing portion (not shown) provided on the hinge portion 9.

  After use, the projector 1A stores the arm 10 by turning the arm 10 upward about the base end. In the state in which the arm 10 is stored (FIG. 2), the projector 1A can move on the general road surface because the general road surface wheel 8 contacts the ground.

  Further, in order to make the projector 1A as compact as possible during storage, the lighting device 2 can be folded and stored in the storage bag 23, and further removed from the telescopic column 3. The telescopic support 3 can also be stored in the upper part of the cart 4 by loosening the telescopic fixing lever 20 of the cart 4 and removing it from the support mounting part 19. Furthermore, the handle 12 can also be pushed into the carriage 4 and can be easily brought into a compact state as shown in FIGS. 3 and 4, so that it can be stored in a narrow place.

  Any one or more of the rail wheel 6, the bearing portion 25, and the hinge portion 9 are made of an insulating material, thereby preventing a railroad control signal applied between the two rails 7 from leaking. be able to.

  Further, by providing the shield part 13 between the carriage 4 and the power supply part 5, electromagnetic noise generated from the power supply part 5 affects the ground element of the train automatic control device installed between the rails 7. This can be prevented.

2. Second Embodiment Next, a projector according to a second embodiment of the present invention will be described. The projector according to the present embodiment is different from the first embodiment in the configuration of the arm. The same configuration as that of the first embodiment will be described with reference to FIGS. 4 and 5 with the same reference numerals.

  A projector 1B shown in FIG. 4 includes an extendable and retractable arm 30 and an arm attachment portion 31 that attaches and fixes the arm 30 to the carriage 4. The arm 30 has one first tube 39 and two second tubes 40 that enter and leave the first tube 39. One second tube 40 is disposed at each end of the first tube 39, and a fixing portion 41 is provided for positioning and fixing the second tube 40 with respect to the first tube 39 at a desired position. Yes.

  In addition, two flanges 37 are fixed to the first pipe 39 at a predetermined interval. The flange 37 is provided with a locking portion 38 formed in a hook shape.

  The arm attachment portion 31 has a locking piece 35 provided at each end in the front-rear direction of the carriage 4 and a wing nut 33 provided on the locking piece 35. The locking pieces 35 are formed in a pair of left and right (two in total), and are formed with arm engaging recesses 36 that open downward. Although not shown in the drawing, the arm attachment portion 31 is also provided in the rear end portion of the carriage 4 in the same manner.

  The arm 30 is disposed below the arm attachment portion 31, and the first tube 39 is inserted into the arm engagement recess 36. Next, the locking portion 38 is locked to the wing nut 33 and the wing nut 33 is tightened to fix the flange 37 to the locking piece 35. In this way, in the projector 1 </ b> B, the arm 30 is fixed to the carriage 4 via the arm attachment portion 31. When the arm 30 is removed, the wing nut 33 is loosened, the engagement between the wing nut 33 and the locking portion 38 is released, and the flange 37 is detached from the locking piece 35, whereby the arm 30 is removed from the arm mounting portion. 31, that is, can be removed from the carriage 4. When the arm 30 is removed, the arm 30 can be shortened to the shortest and fixed and stored in the upper frame 32 (FIG. 5).

The projector 1 </ b> B configured as described above can attach the arm 30 to the arm attaching portion 31 in a detachable manner, and further extend and contract the arm 30 according to the width of the two rails 7. In other words, the width of the rail for rails 7 has a narrow gauge of 1067 mm in Japan, but there are several other types, including a wide gauge of 1435 mm and even a middle gauge. The floodlight 1B according to the present embodiment can change the width of the rail wheel 6 in accordance with the widths of these several types of rails 7.
(Modification)
The present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the gist of the present invention.

  In the above-described embodiment, the case where the illumination device 2 is a balloon type has been described. However, the present invention is not limited to this and may be a spot type. In the spot type, a lamp is mounted on a socket with a reflector around it, and the irradiation light spreads around the direction of the lamp and can irradiate light in one direction but farther than the balloon type. One or a plurality of these are attached to the holding member on the telescopic support column. Furthermore, in recent years, LEDs that have reached a technically practical range can be used as the light source.

  Although the said embodiment demonstrated the case where the expansion-contraction support | pillar 3 was comprised with the cylindrical tube pillar, this invention is not restricted to this, You may comprise the expansion-contraction support | pillar 3 with a square-shaped column.

  In the first embodiment, the case where the hinge portion 9 pivotally supports the arm 10 so as to rotate in the left-right direction has been described. However, the present invention is not limited to this, and the hinge portion causes the arm 10 to move relative to the ground. You may comprise so that it may rotate in parallel.

  Although the case where the arm 30 is detachably attached to the carriage 4 has been described in the second embodiment, the present invention is not limited thereto, and the arm may be fixed to the carriage 4.

DESCRIPTION OF SYMBOLS 1A, 1B Light projector 2 Illuminating device 3 Telescopic support | pillar 4 Car 5 Power supply device 6 Rail rail wheel 7 Rail 8 Wheel 9 Hinge part 10 Arm 11 Flood light receiving part 13 Shield part 30 Arm

Claims (10)

Telescopic struts erected on the carriage,
In a projector provided with a light projecting portion provided at the tip of the telescopic column,
The cart is
A general road surface wheel capable of traveling on a general road surface;
Rail wheels capable of traveling on two rails arranged in parallel,
The floodlight is characterized in that the rail wheel is electrically insulated between the left and right rail contact surfaces with respect to the moving direction. The projector according to claim 1, further comprising an arm that is foldable on the carriage, wherein the rail wheel is pivotally supported at a tip of the arm. 2. The projector according to claim 1, further comprising an arm detachably provided on the carriage, wherein the rail wheel is pivotally supported at a tip of the arm. The projector according to claim 3, wherein the arm is formed to be extendable and contractible. The floodlight according to any one of claims 1 to 4, wherein the rail wheel is made of an insulating material. The light projector according to any one of claims 1 to 5, wherein a bearing portion provided between the arm and the rail wheel is formed of an insulating material. The projector according to claim 2, wherein a hinge portion provided between the arm and the carriage is made of an insulating material. The projector according to any one of claims 1 to 7, wherein a power receiver for a projector is provided on the carriage. The projector according to any one of claims 1 to 8, wherein a power supply for a projector is mounted on the carriage. The projector according to claim 9, wherein a shield portion is provided between the carriage and the power supply for the projector.

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