JP2001060412A - Floodlight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floodlight which is easily stored without taking up much space in its transportation. SOLUTION: This device is composed of a movable chassis 4, and a freely expandable elevator provided with a generator fixedly mounted on the chassis 4 and a floodlamp 6 on its upper end. An extension prevention device 29 for preventing extension of a third mast 12 and a fourth mast 13 at the lowest descending position of the fourth mast 13, is disposed between an upper end of a second mast 11 and an upper end of the fourth mast 13. Thereby, a mast locking device for fixing a second mast 11 to a first mast 10 when the second mast stands is disposed between the first mast 10 and the second mast 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floodlight used for nighttime illumination at a civil engineering work site or the like, and more particularly to a folding two-light floodlight that can be folded from a second mast.

[0002]

2. Description of the Related Art New construction and restoration works on roads and the like are often performed at night due to traffic restrictions and the like, and because of the nature of the construction, mobile night lighting is desired. Is used.

[0003] A conventional floodlight of this type is configured such that a lifting device composed of a plurality of masts is fixedly mounted on a chassis having front and rear wheels, and an illuminating lamp is attached to the upper end of the uppermost stage. By unwinding the wire rope with a winch, the illumination lamp is moved up and down via a lifting rod.

[0004]

By the way, in such a floodlight, when transporting by truck or storing in a warehouse, a plurality of masts are stored in the lowermost mast so that the illuminating lamp can be minimized. It is performed with the lower position.

[0005] However, simply lowering the illumination lamp to the lowermost position is bulky in the height direction, which is inconvenient at the time of transportation or storage.

The present invention has been made in view of the above, and has as its object to provide a floodlight which can be easily stored without being bulky during transportation.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a movable chassis, a generator fixedly mounted on the chassis, and a telescopic device equipped with an illumination lamp at an upper end portion. A first mast erected on the chassis, a second mast movably connected to an upper end of the first mast, and a second mast fitted to the second mast. A gas spring is provided at a lower end of the second mast via a gas spring receiver, and a first mast is provided at a lower end of the second mast. A pulley is provided, and a first wire rope having one end locked to a gas spring receiver is connected to a third pulley via the first pulley.
The other end is locked at the lower end of the mast, a support mast is provided at the lower end of the third mast, the second pulley is arranged at the upper end of the support mast, and one end is locked at the gas spring receiver. A light projector comprising a two-wire rope and the other end locked to a lower end of a fourth mast via a second pulley, wherein
An extension preventing device is provided between the upper end of the mast and the upper end of the fourth mast to prevent the third mast and the fourth mast from being extended at the lowest position of the fourth mast. A mast lock device for fixing the second mast to the first mast when the second mast stands up is provided between the mast and the mast.

According to a second aspect of the present invention, in the floodlight of the first aspect, the extension preventing device is provided on an outer wall of a fourth mast and the extension preventing hook is provided on an outer wall of a second mast. The present invention is characterized in that it comprises an elongation prevention hook stopper member which is detachably engaged with the prevention hook.

According to a third aspect of the present invention, in the floodlight according to the first aspect, the mast lock device is provided on a locking member provided on an outer wall of the first mast and on an inner wall of the second mast. And an engaging member that removably engages with the locking member.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a projector according to an embodiment of the present invention, FIG. 2 is a rear view thereof, and FIG. 3 is a side view thereof. FIG.
5A and 5B are cross-sectional views showing a mast relationship of the floodlight according to one embodiment of the present invention, and FIGS. 5A and 5B are views of the floodlight according to one embodiment of the present invention. 6 and 7 are side views showing a folding mechanism of the floodlight according to one embodiment of the present invention. FIG. 8 is a perspective view showing an extended state of the floodlight according to one embodiment of the present invention, and FIG. 9 is a perspective view showing a folded state of the floodlight according to one embodiment of the present invention.

As shown in FIGS. 1 to 3, the light projector 1 includes a pair of left and right front wheels 2 and a rear wheel 3, and is a movable chassis 4.
A telescoping elevating device 5 mounted and fixed on the chassis 4, and an illuminating lamp 6 attached to the upper end of the elevating device 5. A generator (not shown) is mounted and fixed on the chassis 4.

The chassis 4 is provided with a handle 7 for changing the direction of the front and rear wheels 2, 3, and is provided with a brake device 8 and a pair of left and right outriggers 9.

The elevating device 5 includes a first mast 10 erected and fixed on the chassis 4, a second mast 11 movably connected to an upper end of the first mast 10, and an inside of the second mast 11. A third mast 12 is inserted into and out of the third mast, and a fourth mast 13 is inserted into and out of the third mast 12. The upper end of the fourth mast 13 has a substantially U-shaped illumination. A light fixture 14 is provided.

Illumination lamps 6 are attached to the upper left and right ends of the illumination lamp fixture 14, respectively. The illuminating lamp 6 is connected to a generator (not shown) via a lamp stabilizer 16 by a cable 15 and is turned on using the generator as a power source.

FIGS. 4A and 4B show the relationship between the second mast 11, the third mast 12, and the fourth mast 13. FIG.

That is, a gas spring receiver 17 is provided at the lower end in the second mast 11, and the lower end of a gas spring 18 is fixed to the center of the gas spring receiver 17. A pulley support frame 20 for rotatably supporting a first pulley 19 is provided at an upper end of the gas spring 18.
Are connected.

Further, on the inner wall at the lower end of the third mast 12,
The first wire receiving member 21 is provided, and the lower end of the support mast 22 of the third mast 12 is connected to the first wire receiving member 21. The support mast 22 extends inside the fourth mast 13 to a position above the pulley support frame 20, and a second pulley 23 is rotatably supported at the upper end thereof.

Then, the first wire rope 24 having one end locked to the gas spring receiver 17 is guided by the first pulley 19, and the first wire rope 24 is provided at the lower end of the third mast 12.
The other end is locked to the wire receiving member 21. Further, the second wire rope 25 having one end locked to the gas spring receiver 17 is guided by the second pulley 23, and the other end is connected to the second wire receiving member 26 provided at the lower end of the fourth mast 13. Locked.

A slide guide 27 is provided on the inner wall of the upper end of the second mast 11, and a stopper member 28 is provided on the outer wall of the lower end of the third mast 12 to engage with the slide guide 27.

The upper end of the second mast 11 and the fourth mast 13
An elongation preventing device 29 for preventing the third mast 12 and the fourth mast 13 from elongating is provided between the upper and lower ends of the elevating device 5 at the lowest position.

The extension preventing device 29 is shown in FIGS. 5 (a) and 5 (b).
As shown in FIG. 5, an extension prevention hook 30 provided on the outer wall of the fourth mast 13 and an extension prevention hook receiving member 31 provided on the outer wall of the second mast 11 and engageable with the extension prevention hook 30 are provided. Consists of

The extension prevention hook 30 includes a hook support frame 34 attached to an attachment plate 33 fixed to the outer wall of the fourth mast 13, a hook portion 35 supported by the hook support frame 34 so as to be swingable, and At the lower end of the hook portion 35, a fishing-like engaging portion 36 is formed. The hook 35 is urged toward the outer wall of the fourth mast 13 by a spring (not shown). A pin hole 37 through which a pin (not shown) can be inserted and removed is formed at the lower end of the hook support frame 34.

On the other hand, the extension preventing hook receiving member 31 is attached to a mounting plate 38 fixed to the outer wall of the second mast 11, and engages the engaging portion 36 of the hook portion 35 in a detachable manner. A portion 39 and an elongated hole 40 corresponding to the pin hole 37 are provided.

FIGS. 6 and 7 show the folding mechanism 4 of the second mast 11 connected to the upper end of the first mast 10 so as to be able to undulate.
1 is shown.

That is, the lower end of the second mast 11 is connected to the upper end of the first mast 10 via the flange 42 and the pin 43 so as to be able to be raised and lowered. Have mounting flanges 44 and 4 respectively.
A gas spring 46 is provided through the fifth spring 5.

The second mast 11 is located between the second mast 11 and the first mast 10 when the second mast 11 stands up.
An upright fixing device 49 comprising a mast lock device 47 and a mast connecting device 48 for fixing the
A folding fixing device 50 is provided for fixing the second mast 11 to the first mast 10 when the mast 11 is folded.

The mast lock device 47 includes a first mast 10
And an engaging member 52 provided on the inner wall of the second mast 11 and removably engaged with the locking member 51.

The locking member 51 is formed in a T-shape having a locking rod 53 at its tip, and its base is fixed to the outer wall of the first mast 10 by a bolt 55 via a support plate 54.

The engaging member 52 includes a hook member 57 having a fitting groove 56 capable of engaging and disengaging the locking rod 53, and a pair of first and second pivotally supported pivotal members within the hook member 57. It is composed of two claw members 58 and 59. The first claw member 58 includes an engagement claw 60 for engaging the locking rod 53 corresponding to the fitting groove 56 of the hook member 57, and a second claw member 5.
9 is formed with a pawl engaging portion 62 capable of engaging and disengaging the pawl portion 61,
On the other hand, the second claw member 59 is formed with a claw portion 61 that engages with the claw engagement portion 62 to prevent the first claw member 58 from swinging, and a lever 63 that protrudes below the second mast 11. ing.
The first claw member 58 and the second claw member 59 are connected to each other by the spring 64 so that the claw portion 61 of the second claw member 59 is moved to the first claw member 5.
8 are biased to each other in a direction to engage with the claw engaging portion 62.

The mast connecting device 48 includes a pin hole 66 formed in a connecting rod 65 provided on the outer wall of the first mast 10.
And a pin hole 68 formed in a connecting rod 67 provided on the inner wall of the second mast 11, and a pin hole 69 which can be inserted into and removed from these pin holes 66, 68.

The folding and fixing device 50 includes a pin hole 71 formed on a connecting rod 70 provided on the outer wall of the first mast 10 and a pin formed on a connecting rod 72 provided on the outer wall of the second mast 11. It comprises a hole 73 and a pin 69 which can be inserted into and removed from these pin holes 72, 73.

Reference numerals 74, 75, and 76 denote hooks, and the hooks 74 and 75 are used to fix the second mast 11 to the chassis 4 via wires 78 while the second mast 11 is folded. Reference numeral 76 is used when the projector 1 is lifted by a crane or the like in the above state.

Reference numeral 77 denotes a handle used to raise and lower the lifting device 5 and is attached to the upper end of the third mast 12.

Next, the operation of the above embodiment will be described.

When raising the illumination lamp 6, the lock of the extension preventing device 29 is released, and the handle 77 is pushed upward.

That is, first, the pins (not shown) inserted into the pin holes 37 and the elongated holes 40 of the hook support frame 34 of the extension prevention hook 30 and the extension prevention hook receiving member 31 are pulled out from the state of FIG. While pulling the hook portion 35 of the prevention hook 30 outward, the fourth mast 13 is lifted slightly upward to disengage the engagement portion 36 of the hook portion 35 from the locking portion 39 of the extension prevention hook receiving member 31, and FIG.
(B).

Next, the handle 77 is pushed upward.

When the handle 77 is pushed up, the gas spring 18 is extended, and one end of the gas spring 18 is engaged with the gas spring receiver 17 with the extension of the gas spring 18, and the other end of the third mast 12 is connected via the first pulley 19. The third mast 12 moves up by the first wire rope 24 locked at the lower end, and the support mast 22 connected to the third mast 12 also moves up.

When the third mast 12 and the support mast 22 move upward, one end is locked to the gas spring receiver 17 and the other end is locked to the lower end of the fourth mast 13 via the second pulley 23. The fourth mast 13 is moved up by the wire rope 25, and the illumination lamp 6 has the highest height in a state where the third mast 12 and the fourth mast 13 have been raised to the highest position.

Next, when lowering the illumination lamp 6 at the raised position, the handle 77 is pulled down.

When the handle 77 is pulled down, the gas spring 18 is shortened. With the shortening of the gas spring 18, the third mast 12 and the fourth mast 13 move down by their own weight, and move down to the lowest position.

When folding the second mast 11 in a state where the third mast 12 and the fourth mast 13 are lowered to the lowest position, first, the extension prevention hook 30 is engaged with the extension prevention hook receiving member 31, A not-shown pin is inserted into both the pin hole 37 and the elongated hole 40 to lock the extension preventing device 29.

Next, the lock of the upright fixing device 49 including the mast lock device 47 and the mast connecting device 48 is released. That is, the pin 69 inserted into the pin hole 66 of the connecting rod 65 of the first mast 10 and the pin hole 68 of the connecting rod 67 of the second mast 11 is pulled out, and the first mast 10 and the second
The connection of the mast connecting device 48 to the mast 11 is released.
Next, the lever 63 of the second claw member 59 of the engaging member 52 is pushed in the direction of arrow A shown in FIG.
By releasing the engagement with the claw member 58 and lifting the second mast 11 in the direction of arrow B in FIG.
The lock of the second lock member 51 is released, and the lock of the mast lock device 47 is released.

In this state, the second mast 11 is folded up to the position shown in FIG.
The pin 6 is inserted into the pin hole 73 of the connecting rod 72 of the first and second masts 11.
9, the second mast 10 is fixed to the first mast 11, and the hooks 74 and 75 are connected by wires 28 to fix the second mast 11 to the chassis 4.

Thus, the third mast 12 and the fourth mast 12
The mast 13 can be folded while being stored in the second mast 11.

Therefore, the masts 11, 12, 13 and the illuminating lamp 6 can be compactly stored and not bulky in the height direction, so that they can be easily transported by truck or stored in a warehouse.

[0048]

As is apparent from the above description, according to the first aspect of the present invention, since the gas spring is provided in the lifting device, the third mast and the fourth mast can be raised and lowered with one touch.

Further, since the fourth mast is provided with the extension preventing device for preventing the third mast and the fourth mast from being extended at the lowest position, the mast is not inadvertently extended at the time of transportation or storage, so that it is safe. Can be held.

Further, a mast lock device is provided which is connected to the upper end of the first mast so as to be able to be raised and lowered and which fixes the second mast to the first mast when the second mast is standing up. It can be safely operated without falling down.

Further, since the mast and the illumination lamp can be stored compactly, they can be easily transported by truck or stored in a warehouse.

According to the second aspect of the present invention, the extension preventing device is provided with the extension preventing hook provided on the fourth mast and the extension preventing hook stopper member which is removably engaged with the extension preventing hook provided on the second mast. , The structure is simplified and the cost can be reduced.

According to the third aspect of the present invention, the mast lock device is constituted by the locking member of the first mast and the engaging member provided on the second mast and removably engaged with the locking member. The structure is simplified, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a floodlight according to an embodiment of the present invention.

FIG. 2 is a rear view of the floodlight according to the embodiment of the present invention.

FIG. 3 is a side view of the floodlight according to the embodiment of the present invention.

FIG. 4A is a cross-sectional view illustrating a relationship between masts of a projector according to an embodiment of the present invention. (B) It is sectional drawing which shows the relationship of the mast of the floodlight which concerns on one Embodiment of this invention.

FIG. 5 (a) is a cross-sectional view showing an engagement state of an extension preventing device for a floodlight according to an embodiment of the present invention. (B) It is sectional drawing which shows the detached state of the extension prevention apparatus of the floodlight which concerns on one Embodiment of this invention.

FIG. 6 is a side view showing a locked state of a mast lock device of the folding mechanism of the floodlight according to the embodiment of the present invention.

FIG. 7 is a side view showing a folded state of a second mast of the floodlight according to one embodiment of the present invention.

FIG. 8 is a perspective view showing an extended state of the floodlight according to the embodiment of the present invention.

FIG. 9 is a perspective view showing a folded state of the floodlight according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... Car chassis 5 ... Elevating device 6 ... Illumination lamp 10 ... 1st mast 11 ... 2nd mast 12 ... 3rd mast 13 ... 4th mast 17 ... Gas spring receiver 18 ... Gas spring 19 ... 1st pulley 22 ... Support mast 23 ... second pulley 24 ... first wire rope 25 ... second wire rope 29 ... extension prevention device 30 ... extension prevention hook 31 ... extension prevention hook receiving member 47 ... mast lock device 51 ... locking member 52 ... engaging member

Claims (3)

[Claims] The present invention comprises a movable chassis, a generator fixedly mounted on the chassis, and a telescopic lifting device equipped with an illuminating lamp at an upper end thereof, wherein the lifting device is erected on the chassis. A first mast, a second mast movably connected to an upper end of the first mast, and a third mast inserted into the second mast.
A mast and a fourth mast inserted into the third mast, a gas spring provided at a lower end of the second mast via a gas spring receiver, and a first pulley provided at an upper end of the gas spring. Then, the other end of the first wire rope having the one end locked to the gas spring receiver is locked to the lower end of the third mast via the first pulley, and a support mast is provided at the lower end of the third mast. A second pulley is disposed at the upper end of the support mast, and one end of the second pulley is locked to a gas spring receiver.
A light projector in which a wire rope is fixed at the other end to a lower end of a fourth mast via a second pulley, wherein between the upper end of the second mast and the upper end of the fourth mast, An extension preventing device is provided for preventing the third mast and the fourth mast from being extended when the fourth mast is at the lowest position, and the second mast is provided between the first mast and the second mast when the second mast stands. A light projector comprising a mast lock device for fixing a mast to a first mast. 2. A floodlight according to claim 1, wherein said extension preventing device is provided on an outer wall of a fourth mast and said extension preventing hook is provided on an outer wall of a second mast. A floodlight comprising an extension-preventing hook-stopping member removably engaged. 3. The floodlight according to claim 1, wherein said mast lock device is provided on an outer wall of a first mast and on an inner wall of a second mast. A floodlight comprising: an engaging member that engages removably.