JP2853849B2 - Floodlight - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floodlight provided with a light at the upper end of a telescopic support column erected on a trolley, and more particularly, to steer the trolley by operating an operation rod provided on the trolley. The present invention relates to a hand-operated floodlight that moves a bogie to a predetermined position by pushing the operating rod while performing the operation.

[0002]

2. Description of the Related Art Conventionally, as this type of floodlight, those shown in FIGS. 18 and 19 are known. Describing this floodlight, a bogie 100 having wheels 100a and 100b in front and back,
A telescopic column 101 having two lights 102 mounted on a tube column 101c standing on the trolley 100 and positioned at the uppermost stage; and a link mechanism 103 provided on the lower surface of the trolley 100 to steer the front wheels 100a, 100a. By operating the link mechanism 103, the front wheels 100a, 100
a steering shaft 104 rotatably provided on the upper surface of the bogie 100 to perform the steering operation, and an operating rod 10 fixed to the upper end of the operating shaft 104.
The front wheel 100a, 100
While performing the steering of a, the bogie 100 is moved to a predetermined position by pushing the operating lever 105, and the light 102 is installed at a predetermined position. The telescopic strut 101 is formed by vertically attaching at least one (here, two) middle tubular pillars 101b and 101c whose inner diameters are sequentially reduced to the base pillar 101a fixed vertically to the bogie 100. While being slidably loosely fitted, each of the tube columns 101a to 101c has a middle tube column 101b, 101c.
A lifting mechanism (not shown) for vertically sliding the c is provided, and the column is expanded and contracted by the operation of the raising and lowering mechanism, so that the column is extended when used and the light 102 is positioned at a desired height, and the column is contracted when not used. It has a known structure.

[0003]

In the above-mentioned conventional floodlight, the transport and storage are facilitated by contracting the telescopic strut 101. However, there is a drawback in that it is necessary to mount it on a carrier and to fix it immovably, which makes the transportation troublesome. In addition, this type of floodlight is mainly used for road construction at night, but in the off-season of construction, the number of storage in warehouses etc. increases due to the sudden decrease in demand, etc. It is required to be possible.

In response to such a demand, the applicant of the present application has mounted a telescopic strut removably on a trolley, and supported rotatably in the horizontal direction when mounted on the trolley. A light projector in which an operation rod is attached and a link mechanism is linked so as to follow the rotation of the telescopic strut by the operation of the operation rod has been previously proposed (Japanese Patent Application No. Hei.
No. 326033). According to this floodlight, the operating rod and the telescopic strut are integrated, and the telescopic strut can be separated from the bogie so that it can be transported by a passenger car or the like, and can be stored in a smaller space than before, and The steering of the wheels can also be performed by the same operation of turning the operating rod as before, and the angle of the light changes following the operation of the bogie by operating the operating rod. It has many advantages, such as being extremely useful.

In recent years, it has been proposed to use this type of floodlight in a campsite, a school playground, or the like, so that women, children, the elderly, etc. can easily carry the floodlight, and There is a need for a floodlight that can be stored in a smaller space. The present invention has been made in view of such conventional circumstances, and the purpose thereof is to:
An object of the present invention is to provide a new floodlight that is more compact, can be easily transported, and has a wide range of uses.

[0006]

In order to achieve the above-mentioned object, a floodlight according to the present invention comprises a telescopic support column having a light at an upper end thereof, which is detachably mounted on a bogie and mounted on the bogie. In the above, the link is rotatably supported in the column circumferential direction, and a link mechanism provided on the bogie for steering the wheels is linked so as to follow the rotation of the telescopic column, and the light is further moved with respect to the telescopic column. On the other hand, while being detachably attached, an operation rod for rotating the column is provided on the telescopic column, and the operation rod is rotatably attached to the telescopic column,
It is characterized by being provided so as to be able to be locked in a horizontal direction substantially perpendicular to the telescopic strut and a vertical direction substantially parallel to the telescopic strut.

According to the above construction, if the telescopic support is removed from the carriage and the light is removed from the telescopic support, it is divided into a dolly, a telescopic support with operating rod, and a light. Elderly people can easily carry them. Moreover, if the operating rod is locked in a vertical direction (a direction substantially parallel to the telescopic strut), the operating rod and the telescopic strut overlap, and the telescopic strut can be housed more compactly.
The occupied space is reduced, making it extremely convenient to carry in small passenger cars and store in warehouses. Further, in the assembled state, if the operating rod is locked in a horizontal direction (a direction substantially perpendicular to the telescopic strut) and the telescopic strut is rotated by operating the operating rod, the link mechanism follows the rotation. To operate the bogie, and the lights rotate together with the telescopic struts to illuminate the moving direction of the bogie. In this state, the operating rod is pushed to move the cart in an arbitrary direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a floodlight according to the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 1 to FIG. 3, a floodlight A provided with one light 3 is shown, and the floodlight A is provided with a telescopic strut 2 which is detachably mounted on a bogie 1. In the mounted state, the light beam 3 is rotatably supported, a light 3 is detachably attached to the upper end of the support column 2 via a mounting frame 4, and a link mechanism 6 provided to steer the bogie 1 is rotated by the rotation of the telescopic support column 2. Linked to follow the movement,
Further, an operating rod 7 for rotating the column 2 is provided on the telescopic column 2, and the operating bar 7 is rotatably attached to the telescopic column 2, and is substantially horizontally and substantially perpendicular to the telescopic column 2. It is provided so as to be able to be locked in a vertical direction positioned in parallel. Reference numeral 5 denotes a generator serving as a power source of the light 3 and is mounted on the carriage 1.

The cart 1 includes front and rear left and right wheels 1a, 1a,
1b, 1b is rotatably supported. A link mechanism 6 is provided on the lower surface so that the left and right wheels 1a, 1a on the front side can be steered by operating an operating rod 7, which will be described later. Has become. The link mechanism 6 rotatably supports the front left and right wheels 1a, 1a by pivots 6a, 6b, and slidably mounts a first link rod 6c on the lower surface of the carriage 1.
The second link rod 6d connected to one end of the first link rod is linked to the pivot 6a so that the wheel 1a supported by the pivot 6a inclines in a predetermined direction (right or left) as the first link rod 6c moves forward and backward. And the third, fourth, and fifth wheels 1a supported by the pivot 6b are tilted in the same direction.
The link shafts 6e, 6f, 6g link the pivots 6a, 6b to each other, and have a structure well known in the art. A linking portion between the sixth link rod 6h connected to the other end of the first link rod 6c and the base pipe 2a of the telescopic strut 2 will be described later.

The telescopic strut 2 has a base pillar 2a standing upright at the rear of the upper surface of the bogie 1 and at least one middle tubular column having an inner diameter gradually reduced with respect to the base pillar 2a. In the present embodiment, two middle tube columns (first middle tube column 2b and second middle tube column 2c) are loosely fitted sequentially slidably up and down.
The height of the light 3 is adjusted appropriately by sliding the b and 2c up and down with each other by means of an arbitrary elevating means. Means for vertically sliding the middle tube columns 2b and 2c are disclosed in JP-A-63-189577 and JP-A-63-1895.
As disclosed in Japanese Patent Application Laid-Open No. 78-78, etc., an apparatus using an appropriate number of pulleys, wires, and a winder is well known.
No. 6032), the gas damper 50 is incorporated in the base tube column 2a, and the repulsive force of the gas damper 50 is effectively used to directly raise and lower the respective middle tube columns 2b, 2c to lightly handle with one hand. A configuration is adopted in which the support column 2 can be expanded and contracted by operation.

A vertical sliding mechanism employing the gas damper 50 will be described later in detail.
The structure in which the link mechanism 6 is detachably mounted on the trolley 1 and is supported so as to be rotatable in the horizontal direction when mounted on the trolley 1, and the link mechanism 6 is linked to follow the rotation of the telescopic strut 2. This will be described with reference to FIG.

In the drawing, reference numeral 10 denotes a receiving portion provided at a position corresponding to the rear portion of the upper surface of the truck 1. The receiving portion 10 fits and inserts a receiving cylinder 12 into a hole 11 formed in the upper surface of the truck 1, On the inner peripheral surface of the receiving cylinder 12, cylindrical bearings 13, 13 made of a self-lubricating plate material (so-called oilless metal) are arranged vertically, and the pedestal 15 is rotatable by the receiving portion 10. Supported. The pedestal 15 has a circular shape in plan view as shown in FIG.
Are rotatably supported on the upper surface of the carriage 1 by being inserted into the bearings 13 of the receiving portion 10. Axis 16
The lower end 16a protruding from the receiving cylinder 12 has a shape smaller in diameter than the shaft 16 and is formed by cutting out a predetermined portion of the outer periphery.
6a is inserted and engaged with the engagement hole 6i provided at the other end of the above-described sixth link rod 6h, thereby rotating integrally with the sixth link rod 6h. The six link rod 6h rotates, and the first link rod 6c reciprocates.

A pair of left and right hinges 20, 20 are fixed to the pedestal 15 in parallel on the outer periphery of one half side (left side in FIG. 8) with respect to the center line L, and the other half side (right side in FIG. 8). On the base 15, the engaging pieces 21 corresponding to the hooks 33 provided on the base tube column 2a and the power supply-side electrodes 24 corresponding to the light-side electrodes 36 are formed on the pedestal 15, respectively.

The hinge 20 has its base end secured to the outer periphery of the pedestal 15 by means of welding or the like and extends outwardly of the pedestal. A hinge shaft 31 provided on the base tube column 2a is provided on the distal end side in the extending direction. A groove 22 to be freely rotatably inserted is recessed along the width direction of the hinge 20. 6B, the lower end 22b is inclined toward the center line L (in other words, toward the engaging piece 21) with respect to the upper end opening 22a. It is recessed.

The engaging piece 21 stands upright in an inverted L-shape as shown in the figure, and has, at its upper end, a locking plate 21a with which the lower end 33a of the hook 33 engages detachably. The electrodes 24, 24 are connected to plugs 23 erected on the upper surface of the base 15.
The light-side electrodes 36, 36 provided on the base tube column 2a are detachably connected to and separated from each other by the rotation of the base tube column 2a about the hinge groove 22 as a fulcrum. A gap 25 into which the lower end 33a of the hook 33 is loosely inserted is formed between the electrodes 24 on the upper surface of the plug 23,
The engaging piece 21 is provided at a position facing the gap 25.
The lower half of the plug 23 penetrates the pedestal 15 and is loosely inserted into a hole 17 provided on the upper surface of the trolley 1. The hole 17 is in the pedestal 15
And serves as a guide hole for the plug 23 which rotates integrally with the
In order to cover the rotation range of the support 2, the support 2 is formed in an arc hole shape in a plan view around the shaft 16.

On the other hand, at the lower end of the base pillar 2a of the telescopic strut 2,
A substrate 30 having the same plane and circular shape as the pedestal 15 is fixed by welding or the like, and the substrate 30 is detachably attached to the upper surface of the pedestal 15. That is, the substrate 30
One half of the center line L (left side in FIG. 7)
A hinge shaft 31 rotatably inserted into the grooves 22 and 22 is secured to the outer periphery of the shaft, and the other half (the right side in FIG. 7) is rotatably supported by a shaft 32 and engages with the engaging shaft. The locking plate 21a of the piece 21 is provided with a hook 33 which is detachably engaged with the resilient force of the spring 37, and is provided with a hinge shaft 31.
After the both end portions of the hooks 33 are loosely inserted into the grooves 22, 22, the lower end 33a of the hook 33 is engaged with the engaging plate 21a. In a state where the telescopic support 2 is mounted, the link mechanism 6 is supported so as to be rotatable in the horizontal direction, and is linked so as to follow the rotation of the telescopic support 2. In addition, the groove 22 is engaged with the engaging piece 21 as described above.
, The hinge shaft 31 is prevented from dropping out of the groove 22 when the telescopic strut 2 is mounted,
The mounted state is reliably maintained (see FIG. 4). The hook 33 is provided with a pedal 33b for rotating the hook 33 backward. The pedal 33b is depressed and the hook 33 is moved backward (in the direction of the base column 2a) against the elastic force of the spring 37. By pushing the hook 33 to release the engagement between the locking plate 21a and the hinge shaft 31 as a fulcrum, the support column 2 is tilted to release the hook 33 from the engagement piece 21, and then the hinge shaft 31 is removed from the groove 22 to expand and contract. The support 2 is configured to be separated from the carriage 1.

The hinge shaft 31 is fixedly supported in a protruding manner outside the substrate 30 via means such as welding. The shaft 32 provided at the upper end of the hook 33 is rotatably supported by a hole 34a of a bearing member 34 protruding from a predetermined portion of the peripheral wall of the base tube column 2a, and the lower end 33a having a hook shape is described above. When the board 30 is mounted on the pedestal 15, the hook lower end portion 33a and the locking plate 21a are positioned between the hook 25 and the locking plate 21a. It is configured to be engaged. A plug 38 is disposed on the peripheral wall of the base tube column 2 a at a position facing the plug 23, and the light-side electrodes 36, 36 project from the lower surface of the plug 38. When mounted on the power supply, the electrodes 36, 36 on the light side are inserted into the electrodes 24, 24 on the power supply side so as to be able to freely come and go (removable), and the two electrodes 24, 36 have a predetermined holding force and have a so-called outlet. Configure to connect to the format.

Reference numeral 39 denotes a cover for protecting the electrodes 24 and 36. The cover 2 surrounds the plugs 23 and 38 and the engagement piece 21 with the support 2 mounted on the pedestal 15.
a. A hole 39a through which a cord 38a connected to the plug 38 is inserted is formed in the upper surface of the cover 39.

On the upper surface of the pedestal 15, a band-like groove 15a is formed along the center line L, and a leaf spring 40 is disposed so as to close the groove 15a. The leaf spring 40 has a longitudinal central portion 40a fixed to the upper end of the shaft 16 by a screw 41, and both end portions 40b, 40b are stepped portions 1 at both ends of the groove 15a.
5a ', the top portion 40d of the bent portion 40c formed between the central portion 40a and the end portion 40b protrudes from the groove 15a with an upward urging force, and is mounted on the pedestal 15.
The substrate 30 and the pedestal 15 are configured to be brought into more close contact with each other by abutting on the lower surface of the reference numeral 0.

According to the above configuration, the telescopic strut 2 is connected to the carriage 1
1 (FIGS. 1, 3 to 5), the substrate 30 at the lower end of the base pillar 2a is engaged with the hinge 20 and the hinge shaft 31, and the hook 33 is engaged with the engagement piece. 21 and is integrally attached to the pedestal 15 by the urging force of the leaf spring 40. Therefore, the column 2 is supported on the carriage 1 so as to be rotatable in the horizontal direction, and is linked with the link mechanism 6 via the pedestal 15 so that the link mechanism 6 operates following the rotation of the telescopic column 2. become. Accordingly, the telescopic strut 2 is rotated by the turning operation of the operating rod 7, and the link mechanism 6 is actuated to follow the turning, thereby steering the bogie 1 and, at the same time, operating the bogie 1 by operating the operating rod. The light 3 is directed in the moving direction of the bogie 1 following the direction. In this state, the electrodes 36, 36 on the light side and the electrodes on the power supply side are 24,
24 is in contact with each other to establish a mutual connection, and the power of the generator 5 is reliably supplied to the light 3. Further, the connection between the electrode 36 on the light side and the electrode 24 on the power supply side
The two electrodes 24 and 36 are connected with a predetermined holding force so that the two electrodes 36 are connected when the carriage 1 is moved, when the column 2 is rotated, and when the column 2 is expanded or contracted. , 24 can be prevented from separating. In this way, the connection between the electrodes 36 and 24 can be made more reliable because, as in a metal halide lamp usually used as the light 3 for this type of floodlight, even if the contact is separated even momentarily, the light is turned off. However, it is particularly useful when a predetermined time is required until re-lighting. Furthermore, the substrate 30 (the support 2) and the pedestal 15 are brought into closer contact with each other by the urging force of the leaf spring 40, and the steering of the carriage 1 by the rotation operation of the operating rod 7 can be performed more reliably. .

From the above-mentioned mounting state of the column, the pedal 33b
To rotate the hook 33 backward, and the hinge shaft 3
The substrate 30 is separated from the pedestal 15 by an extremely simple operation (one-touch operation) in which the support 2 is lowered with the support 1 as a fulcrum, and the hinge shaft 31 is removed from the groove 22 at the same time. The connection between the light side and the power supply side is separated, and the telescopic strut 2 is detached from the carriage 1 (see FIG. 6A). When the telescopic strut 2 is detached from the trolley 1, the trolley 1 and the telescopic strut 2 with the operating rod are divided into two members, and the exclusive space of the entire trolley is very small, so that the convenience for packing and storing is greatly improved. improves. Further, in this example, as described above, the electrode 24 on the power supply side and the engagement piece 2
1 is formed at a predetermined height on the pedestal 15, and the light-side electrode 36 and the hook 33 are provided at a height corresponding to the electrode 24 and the engagement piece 21. The lower surface side has a flat surface without unevenness, so that the telescopic strut 2 removed from the carriage 1 can be stably placed on the ground via the substrate 30. The telescopic support 2 removed from the carriage 1 is tilted by a predetermined angle and the hinge shaft 31 is inserted into the groove 22.
After the support shaft 2 is raised with the hinge shaft 31 as a fulcrum, the hook 33 is connected to the engagement piece 21 of the base 15.
With a very simple operation (one-touch operation) just to engage with the trolley 1 again. At this time, the electrode 3
6, 36 are inserted into 24, 24 to establish a mutual connection, and the light 3 is reliably supplied with the power of the generator 5.
Further, the electrodes 24, 24 function as guide holes for guiding the insertion of the electrodes 36, 36, and the substrate 30 is mounted on the pedestal 1.
It functions as a positioning member when mounted on the device 5, and can reliably perform positioning with loose accuracy without using a means that requires high accuracy such as providing a knock pin and an insertion hole, thereby reducing manufacturing costs. Reduction can be expected.

Further, when attaching and detaching the telescopic strut 2 to and from the carriage 1, it is necessary to be able to freely contact and separate in the middle of the connection between the light side and the power supply side. In this case, when the telescopic strut 2 is attached and detached, it is necessary to carry out the work of contacting and detaching the telescopic strut one by one, and as described above, the advantage of being able to attach and detach the telescopic strut 2 with one touch is reduced. However, as described above, the power supply side electrode 2 is mounted on the carriage 1 side (pedestal 15).
4 and 24, and light-side electrodes 36 and 36 are provided on the telescopic support 2 side (substrate 30).
By adopting a configuration in which the power supply side and the light side are connected by freely contacting and detaching the 6, and 36, the detachable operation of the telescopic strut 2 is not required when the telescopic strut 2 is attached and detached, and the attaching and detaching of the telescopic strut 2 is one-touch. Can be made more effective.

Next, a vertical sliding mechanism of the telescopic strut 2 employing the gas damper 50 will be described with reference to FIG. As described above, the substrate 30 is fixed to the lower end of the base column 2a by welding or the like, and the gas damper 50
Is provided, and the first middle tube column 2b, the second middle tube column 2c, and the auxiliary tube column 2d are accommodated in the space above the partition wall 51.

As described above, the first and second middle tubular pillars 2b and 2c are loosely fitted into the base tubular pillar 2a so as to be sequentially slidable up and down in the base tubular pillar 2a by sequentially reducing the inner diameter. The first
An auxiliary pipe column 2d is integrally provided inside the middle pipe column 2b. In addition, a handle 52 and a lock mechanism 60 for expansion and contraction are provided on the upper part of the first middle tube post 2b.

The auxiliary column 2d has a lower end edge of the first intermediate column 2b so that a gap 53 is provided between the auxiliary column 2d and the first intermediate column 2b so that the second intermediate column 2c can be slid up and down. From the surface 2e
, And is housed in the second middle tube column 2c so as to be vertically slidable.

The gas damper 50 is provided with a rod 50b from one end of a cylinder cylinder 50a in which gas and oil are sealed.
This is a structure well known in this kind of technical field, in which the rod 50b is inserted into the base tube 2a by inserting and fixing the tip of the rod 50b into the mounting hole 51a formed in the partition wall 51. At substantially the center position, the cylinder cylinder 50a is fixed while supporting the cylinder cylinder 50a vertically with a predetermined repulsive force. The gas damper 50 is housed inside the auxiliary pipe post 2d.

A first pulley 54 corresponding to the first middle column 2b is rotatably mounted on the upper end of the cylinder cylinder 50a of the gas damper 50. A first wire 55 having one end fixed to the lower end of the auxiliary column 2 d and the other end fixed to the partition 51 is laid over the first pulley 54. On the other hand, a second pulley 56 is rotatably attached to the upper end of the auxiliary column 2d so as to correspond to the second middle column 2c. One end of the second pulley 56 is connected to the second middle column 2.
A second wire 57 fixed to the lower end of c and the other end fixed to the partition wall 51 is laid. Thereby, by expansion and contraction of the gas damper 50, in other words, by raising and lowering the cylinder cylinder 50a,
As the first pulley 54 moves up and down, the first middle tube column 2b and the auxiliary tube column 2d move up and down integrally, and as the second pulley 56 moves up and down integrally with the auxiliary tube column 2d, the second middle tube column 2c moves up and down. Moves up and down, so that the column 2 expands and contracts. Further, in the extended state of the column 2, the second middle column 2c rises with respect to the first middle column 2b by the amount by which the first middle column 2b rises, and the vertical stroke of the gas damper 50 is reduced. Even if the current distribution product has a maximum length of about 350 mm, it can secure a height that can be practically used as a telescopic strut (FIG. 10).
(B)).

It should be noted that the gas damper 50 in the contracted state
Power (F₁) Is the first of the telescopic struts 2 in the contracted state.
The load applied to one pulley 54, that is, the first middle tubular column 2b,
2 Middle tube post 2c, auxiliary tube post 2d, handle 52, lock mechanism 6
0, the light 3 attached to the upper end of the second
Full load of frame 4 and light 3 attachment / detachment mechanism described below
(F _Two). This
Push the handle 52 with the lock mechanism 60 released.
The load (F_Two) Is smaller and the balance of power
Of the gas damper 50 (F ₁) Grows larger
The gas damper 50 is extended, and the auxiliary column 2
d, the first middle column 2b and the second middle column 2c rise as described above.
I will be. On the other hand, if the handle 52 is pushed down,
As the damper 50 contracts, the auxiliary column 2d, the first middle tube
The column 2b and the second middle tube column 2c descend, and the telescopic column 2 contracts.
It will return to the state.

At the upper end of the first middle tube post 2b projecting from the upper end of the base tube post 2a in the contracted state, a support plate 58 located outside the base tube post 2a is vertically provided. A handle 52 protrudes. A lock mechanism 60 is provided above the support plate 58.

The lock mechanism 60 rotatably supports a lower portion of a lock plate 62 having a lock hole 61 on the upper side so as to be rotatable on a support plate 58, and a spring 63 is provided on the shaft support portion to lock the lock hole 61. The side urges the lock plate 62 in a direction in which the side pivots toward the outside of the column 2, and further in the contracted state, the first middle column 2b
At the upper end of the second middle tube post 2c protruding from the upper end, a lock fitting 64 is provided to protrude from the upper end of the second middle tube post 2c so as to engage with the lock hole 61 in a releasable manner and restrict the rotation of the lock plate 62 to the outside of the support post 2. Become.

According to the above configuration, in the contracted state of the column 2 shown in FIG. 10B, the gas damper 50 and the respective pulleys 54 and 56 are housed in the auxiliary column 2d, and the auxiliary tube The column 2d is housed in the second middle tube column 2c, and the second middle tube column 2b is housed in the base tube column 2a.
At this time, the gas damper 50 is locked by the lock mechanism 60.
Is restricted, so that the column 2 does not extend. When the second middle tube post 2c is pushed down with the light 3 from this state, the engagement between the lock fitting 64 and the lock hole 61 is released, and at this time, the lock plate 62 is released from being restricted from rotating outwardly of the support post 2, and The locked state by the lock mechanism 60 is released. If the handle 52 is pushed up with one hand in this state, the repulsive force of the gas damper 50 (F ₁ ) and the load on the first pulley (F ₂ )
And the repulsive force (F ₁ ) becomes larger, and the gas damper 50 expands.
And the first middle tube post 2b rises, and further the second middle tube post 2c
Also, the first middle column 2b is raised by the amount that the first middle column 2b rises.
And extend to a height that can be practically used as a telescopic strut. If the push-up operation of the handle 52 is stopped halfway, the expansion and contraction of the column 2 can be stopped at an arbitrary position. In other words, the height of the column 2 can be adjusted in a stepless manner, which is extremely useful in a floodlight for road works that requires delicate height adjustment. When lowering the column 2 in the extended state as shown in FIG. 10A, if the handle 52 is pushed down with one hand, the gas damper 50 is contracted and the first middle column 2b, the auxiliary column 2d, and the second middle column are contracted. The pipe post 2c is also lowered, and the lock fitting 64 is engaged with the lock hole 61, and returns to the contracted state (locked state) shown in FIG.

In the above description, since the repulsive force of the gas damper 50 when contracted is actually larger than the repulsive force when extended, the force applied to the handle 52 as the column 2 is raised is gradually increased. Although it becomes large, the force is much smaller than the conventional product by the winch winding operation. When the support 2 is extended, the relation between the repulsive force (F ₁ ) of the gas damper 50 and the load (F ₂ ) applied to the first pulley 54 is F ₁ <F ₂ . There is a concern that the gas damper 2 may fall. However, in reality, the friction of the gas damper 50 itself and the frictional resistance between the respective pipe columns become larger than the shortage of the reaction force (F ₂ ) − (F ₁ ). Therefore, the above-described extended state is reliably maintained.

Although not shown, the auxiliary tube 2d needs a groove for the second wire 57 to move up and down.
In this embodiment, this groove may be provided only in the auxiliary column 2d, and is not exposed to the outside because it is covered by the first middle column 2b. In the case where the column 2 has four or more steps, the above-mentioned groove is also provided after the second middle tube column 2c and is exposed to the outside. The width is extremely small as compared with the chip, and there is no danger that rainwater or dust may enter there, or an accident such as a pinch of a hand may occur, and the appearance does not deteriorate.

According to the above-described vertical sliding mechanism, the resilient column 2 can be extended and contracted with an extremely small force by effectively utilizing the repulsive force of the gas damper 50. Further, since the gas damper 50 and the respective pulleys 54 and 56 are housed inside the column 2, an appropriate number of pulleys as in the prior art (JP-A-63-189577, JP-A-63-189578) are used. Unlike the vertical sliding mechanism using a wire and a winder, the column 2 can be made thinner without providing a notch, and the load on the first pulley 54 can be reduced. Operation can be performed quickly.
Further, since the lock mechanism 60 is provided above the base pillar 2a, there is no fear that the lock release operation is performed by mistake as compared with the case where the lock mechanism is a foot-operated type provided at the lower part of the support column 2, and the female There are many advantages, such as excellent safety when used by children and the elderly.

Next, a structure in which the light 3 is detachably attached to the telescopic strut 2 will be described in detail with reference to FIGS. At the upper end of the second middle tube post 2c, there is provided a mounting frame 4 having side frames 4b, 4b at both left and right ends of a lower frame 4a.
The light 3 is pivotably supported between the side frames 4b, 4b so that the angle can be adjusted. On the lower frame 4a of the mounting frame 4, an insertion tube 4c that can be loosely fitted into the upper end opening 2c-1 of the second middle tube post 2c is suspended, and the light-side electrodes 4d, 4d are provided in the insertion tube 4c.
To protrude. A locking member 65 is rotatably supported on the lower frame 4a at the side of the insertion tube 4c. The locking member 65 includes a locking claw 65a provided on the insertion tube 4c side, an operation piece 65b for swinging the locking claw 65a, and a bias for urging the locking claw 65a upward. And a locking claw 65a is provided on the side of the insertion tube 4c.
e, the upward rotation is restricted.

On the other hand, the locking pawl 6 is
The upper end side surface is provided with a locking hole 2c-2 with which the 5a is removably engaged, and the column-side electrode 66 into which the electrodes 4d, 4d are removably inserted is recessed, and the insertion tube 4c is opened. 2c
In the state in which the mounting frame 4 is mounted on the upper end of the second middle tube post 2c by inserting the mounting claw 65a into the locking hole 2c-2, the locking claw 65a is detachably engaged with the locking hole 2c-2, and the light-side electrodes 4d, 4d is connected to the electrode 66 on the support side in a socket type so that the light 3 can be energized. The electrode 66 on the support side is connected to the electrodes 24, 2 on the power supply side via the electrodes 36, 36 described above.
4 electrically.

Therefore, as shown in FIG. 11, when the light 3 is mounted on the upper end of the column 2, the electrode 4 on the light side
d and 4d are electrically connected to the electrode 24 on the power supply side via the electrodes 66 and 36, and the light 3 is operated by operating a switch (not shown).
Is turned on and off. At this time, the locking claw 65a is engaged with the locking hole 2c-2, and the light 3 is securely locked and held at the upper end of the column 2. Further, when the operation piece 65b is pushed upward against the elastic force of the spring 65c, the locking claw 65a is rotated downward and disengaged from the locking hole 2c-2. When the lifter 4 is lifted, the electrodes 4d, 4d are pulled out of the electrode 66 and the insertion tube 4c is pulled out of the second middle column 2c, the light 3 is separated from the telescopic column 2 as shown in FIG. From the separated state, the insertion tube 4c is
c, the electrodes 4d, 4d are inserted into the electrodes 66, and the locking claws 65a engage with the locking holes 2c-2,
It returns to the mounted state shown in FIG. 11 by an extremely simple operation (one-touch operation). In this example, as described above, the electrode 4d provided on the light 3 side and the electrode 66 provided on the telescopic support column 2 are brought into contact with and detachable from each other in the form of a detachable outlet to connect the light side and the power supply side. By adopting a configuration that achieves the above, it is possible to make the effect of attaching and detaching the light 3 with one-touch more effective without requiring the work of connecting and detaching the light 3 individually. Further, since the two electrodes 4d and 66 are connected with a predetermined holding force, it is possible to prevent the two electrodes 4d and 66 from being separated from each other when the carriage 1 is moved, when the column 2 is rotated, or when it is expanded or contracted. In order to make the connection between the two electrodes more reliable in this way, as in the case of the light 3 normally used for a floodlight of this type, even if the contact is separated even momentarily, the light is turned off and turned on again. This is particularly useful when a predetermined time is required. Further, the electrode 66 functions as a guide hole for guiding the insertion of the electrode 4d and the light 3
Since it functions as a positioning member at the time of mounting and there is no need to provide a separate positioning means, a reduction in manufacturing cost can be expected.

Next, the mounting structure of the operating rod 7 to the telescopic column 2 will be described with reference to FIGS. A disk-shaped fixing plate 70 is fixed to a predetermined position of the base tube column 2a so as not to rotate, and cutouts 70a and 70b are formed on the upper peripheral edge and left and right sides of the fixing plate 70. A rotating plate 72 is rotatably supported on the front side of the fixed plate 70 using screws 71, and a substantially central portion of the operating rod 7 in the length direction is fixed to the rotating plate 72 by welding or the like. Then, the operating rod 7 is rotatably attached to the base column 2a. The operating rod 7 includes an upper edge 73 a extending from the upper side surface 7 a of the operating rod 7 toward the fixed plate 70,
A hanging surface portion 73 extending downward from the front side surface 7b of the operating rod 7
and a substantially L-shaped swinging piece 73 provided with the shaft b. Further, the notch 7 is provided at the tip of the upper edge portion 73a.
Claws 73c are provided for engaging and disengaging with 0a and 70b, and a spring 74 for constantly biasing the swinging piece 73 in a rotational direction in which the claw 73c engages with the respective notches 70a and 70b is provided. .

According to the above configuration, as shown by the solid line in FIG. 13, when the operating rod 7 is positioned in a horizontal direction substantially perpendicular to the telescopic column 2, the claw 73c is engaged with the notch 70a. Then, the horizontal state of the operating rod 7 (a state substantially orthogonal to the telescopic column 2) is maintained. If the hanging surface 73b is pressed against the fixed plate 70 against the resilience of the spring 74, the swinging piece 73 is rotated to disengage the claw 73c from the notch 70a. When the operation lever 7 is rotated to position the operation rod 7 in a vertical direction substantially parallel to the telescopic strut 2 as shown by a virtual line in FIG. 13, the claw 73c engages with the notch 70b, and the operation rod 7 The vertical state (a state substantially parallel to the telescopic strut 2) is maintained. At this time, the operating rod 7 and the telescopic strut 2 overlap, and if the light 3 is removed from the strut 2 by the above-described operation, the telescopic strut 2 becomes an extremely compact state in which there are no extra protrusions above and on the side. . Further, from this state, the claw 73c is disengaged by disengaging the claw 73c and the notch 70b by the same operation as described above, and rotating the operating rod 7 so as to be positioned in a direction substantially perpendicular to the telescopic support 2. Chip 70a
, And the horizontal state of the operating rod 7 is maintained.

FIGS. 16 and 17 show a modification of the structure for attaching the operating rod 7 to the telescopic column 2. In this example, a portal-like mounting frame 80 is projected from a predetermined position of the base pipe column 2a,
A turning plate 82 is rotatably supported on the front side of the frame 80 using a screw 81, and a substantially central portion of the operating rod 7 in the longitudinal direction is substantially U-shaped when viewed from the side. Mounting bracket 83
And the operation rod 7 is rotatably attached to the base column 2a. Notches 82a and 82b are formed on the upper and lower edges and the left and right edges of the rotating plate 82. Mounting frame 80
The pivoting piece 84 having a pawl 84a that is removably engaged with the notches 82a and 82b is rotatably fixed on the pivoting piece 84, and the pivoting piece 84 is fixed to the pawl 84a by a spring (not shown). It is always urged in the direction of rotation engaging with the notches 82a, 82b.

Therefore, as shown by the solid line in FIG. 16, when the operating rod 7 is positioned in a horizontal direction substantially perpendicular to the telescopic support 2, the claw 84a engages with the notch 82a and the operating rod 7
(A state substantially orthogonal to the telescopic strut 2) is maintained. Further, if the swinging piece 84 is rotated in a direction to lift the claw 84a against the elastic force of the spring, the engagement between the claw 84a and the notch 82a is released, and the operating rod 7 is rotated in this state. Then, as shown by a virtual line in FIG.
When it is positioned in a vertical direction substantially parallel to the above, the claw 84a is engaged with the notch 82b, and the vertical state of the operation rod 7 (a state substantially parallel to the telescopic strut 2) is maintained. At this time, the operating rod 7 and the telescopic strut 2 overlap, and if the light 3 is removed from the strut 2 by the above-described operation, the telescopic strut 2 becomes an extremely compact state in which there are no extra protrusions above and on the side. . Further, from this state, the claw 84 is operated by the same operation as described above.
a and the notch 82b are disengaged, and the operating rod 7 is rotated to be positioned in a direction substantially orthogonal to the telescopic strut 2, so that the claw 84a engages the notch 82a, The horizontal state is maintained.

According to the floodlight A of this embodiment configured as described above, if the telescopic strut 2 is detached from the bogie 1 and the mounting frame 4 is detached from the telescopic strut 2, the bogie 1 and the telescopic strut with the operating rod 7 are provided. 2. It is divided into three members, a light 3 with a mounting frame 4, and these three members can be easily transported by women, children, elderly people, and the like. Moreover, if the operating rod 7 is locked in a vertical direction (a direction substantially parallel to the telescopic strut 2), the operating rod 7 and the telescopic strut 2 overlap, and the telescopic strut 2 can be housed more compactly, and the exclusive space is provided. This makes it very convenient to transport the product in a small passenger car or store it in a warehouse.
In the assembled state, the operating rod 7 is locked in a horizontal direction (a direction substantially orthogonal to the telescopic column 2).
When the telescopic strut 2 is rotated by the above operation, the link mechanism 6 operates following the rotation to steer the truck 1, and the light 3 pivots integrally with the telescopic strut 2 to move the truck. 1 illuminate the direction of movement. By pushing the operating rod 7 in this state, the carriage 1 can be moved to an arbitrary position while illuminating the front of the moving direction with the light 3.

In this embodiment, since the lock mechanism 60 for locking the extension operation of the telescopic strut 2 is provided above the base pillar 2a, the lock mechanism is a foot-operated type provided at the lower portion of the telescopic strut 2. As compared with the case where the lock release operation is not performed by mistake, there is an advantage that the safety is further improved when used by a woman, a child, an elderly person, or the like.

Further, as shown in FIG. 13 to FIG. 15, notches 70a and 70b are formed at predetermined positions on the periphery of the fixed plate 70 provided on the column 2 side, as shown in FIGS. When the operating rod 7 is rotatably attached to the fixed plate 70 and the pawl 73c that engages with the notches 70a and 70b is provided on the rocking piece 73 provided on the operating rod 7, The installation space for the piece 73 and the operating rod 7 is also used. Therefore, as shown in FIGS. 16 and 17, the projecting dimension of the operating rod 7 from the base pipe 2 a is smaller than the structure in which the installation space for the swinging piece 84 and the operating rod 7 needs to be separately secured. This is advantageous in that the telescopic strut 2 is more compactly accommodated.

The cart 1 and the telescopic strut 2 and the telescopic strut 2 and the light 3 can be separated from each other, and the electrodes 36, 24, 4d and 66 are brought into contact with and separated from each other at the connection portions thereof, so that Since the connection between the side and the light side is planned, the work of connecting and disconnecting the power cords is not required when attaching and detaching the telescopic strut 2 and the light 3, and the effect of attaching and detaching the telescopic strut 2 and the light 3 with one touch can be achieved. It can be effective.

Although the one-lamp type floodlight has been described above, the present invention is not limited to this, and it can be applied to two-lamp or more floodlights. It is needless to say that the present invention is not limited to the one having a stepped structure, but can be applied to a two-staged structure or a telescopic strut having four or more steps.

[0047]

As described above, according to the present invention, a link mechanism for removably erection of a telescoping column, rotatably supporting it when mounted on a trolley, and steering a wheel is provided by the telescoping column. It is linked to follow the rotation, and furthermore, while the light is detachably attached to the upper end of the telescopic column, an operating rod for rotating the column is provided on the telescopic column, and the operating rod is substantially perpendicular to the telescopic column. The horizontal direction and the vertical direction, which are substantially parallel to each other, are provided so as to be able to be locked, so that the operation rod and the telescopic strut can be divided into three members: a bogie, a telescopic strut with an operating rod, and a light. Can be accommodated in an overlapping state. Therefore, it can be easily transported by women, children, the elderly, etc., and can also be transported by small passenger cars or stored at homes, schools, etc., and can be used not only for road construction, but also for camping sites. Versatile new floodlight that can be used in sports halls and school playgrounds. In addition, during use, while turning the wheels with the same operating rod operation as before, the light can rotate integrally with the telescopic strut and emit light in the direction of movement of the bogie, so that it can be used at construction sites at night. It has many effects such as being extremely useful when used.

[Brief description of the drawings]

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

FIG. 2 is a plan view of FIG. 1, in which lights and telescopic struts are omitted.

FIG. 3 is a perspective view of FIG. 1;

FIG. 4 is an enlarged cross-sectional view showing a portion where the telescopic strut is attached to the bogie.

FIG. 5 is a sectional view taken along lines (X)-(X) in FIG. 4;

6 (a) is a cross-sectional view according to the detached state of FIG. 4,
(B) is a partially enlarged view showing a hinge portion.

FIG. 7 is a cross-sectional plan view of the telescopic strut.

FIG. 8 is a plan view of a base.

FIG. 9 is a sectional view taken along lines (Y)-(Y) in FIG. 8;

FIG. 10 is a longitudinal sectional view showing a vertical sliding mechanism of the telescopic strut, wherein (a) shows an extended state and (b) shows a contracted state.

FIG. 11 is a partially enlarged cross-sectional view showing a portion where the light is attached to the telescopic strut.

FIG. 12 is a sectional view according to a detached state of FIG. 11;

FIG. 13 is an enlarged view showing a portion where the operation rod is attached to the telescopic strut.

FIG. 14 is a central longitudinal sectional view of FIG. 13;

FIG. 15 is a sectional view taken along lines (Z)-(Z) in FIG. 14;

FIG. 16 is an enlarged view showing another example of a portion where the operation rod is attached to the telescopic strut.

FIG. 17 is a central longitudinal sectional view of FIG. 16;

FIG. 18 is a side view showing a conventional floodlight.

FIG. 19 is a plan view of FIG. 18;

[Explanation of symbols]

1: cart 2: telescopic strut 3: light 4: mounting frame 6: link mechanism 7: operating rod 60: locking mechanism 65: locking member 65a: locking claw 2c-2: locking hole 73c, 84a: claw 70a, 70b, 82a, 82b: Notch

Continuation of the front page (56) References JP-A-60-227301 (JP, A) JP-A-63-189578 (JP, A) JP-A-63-189577 (JP, A) JP-A-1-137001 (JP) , U) Actually open sho 59-1664 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F21M 1/00-15/00

Claims (1)

(57) [Claims] 1. A telescopic strut having a light at an upper end thereof is detachably mounted on a bogie, supported rotatably in the circumferential direction of the strut when mounted on the bogie, and steers wheels. An operation for linking a link mechanism provided on the trolley so as to follow the rotation of the telescopic strut and mounting the light detachably on the telescopic strut while rotating the strut on the telescopic strut. A lever is provided, and the operating rod is rotatably attached to the telescopic strut, and is provided so as to be lockable in a horizontal direction substantially perpendicular to the telescopic strut and a vertical direction substantially parallel to the telescopic strut. Floodlight.