JP2001035241A - Floodlighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent wires from being pulled excessively, when a support provided with electric-lamp members on its end part has extended to a maximum height. SOLUTION: In this floodlighting device, a plurality of stepwise thinning supports are extendably connected to each other, by inserting them in the inner circumference of a support 20 fixed to a base block 1, electric-lamp members 3 are mounted on an upper end part of a highest-stage support 23, a wire 4 is wrappingly hung on a pulley 52 and locked on an upper end part 2c of a support 21, wires are hung successively between connected supports in a similar manner, a wire 4' locked on a lower end 2d is hung wrappingly on a pulley 51 on the upper end part of the support 21 and further are hung wrapping on a pulley 53, and a lower end of the wire is wound round a winch 6 provided on the base block. Lock pieces 7 are fixed to places near the locking positions of the wires 4, 4' locked on the portions 2b, 2d, and when the supports have extended to the maximum height and the wires are under tension, the lock pieces are caught in slits 2a in the sidewalls of the support 23 or support 22, so that the fact that the supports have extended to the maximum height is recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic uppermost strut having an electric lamp member at the upper end thereof, and winding the wire by a winch provided on a base on which the lowermost strut is fixed, thereby forming a plurality of wires. The present invention relates to a light projecting device that is capable of extending a strut connected to extendable and retractable.
In more detail, it can be seen in response to the winding of the wire that the pillar has reached the highest height by winding the wire with the winch, and furthermore, the height of the stretched pillar can be seen by the pillar height display means provided on the winch Further, the present invention relates to a light projecting device in which when the wire is cut in a state where the support is extended, the extended support does not fall and contract.

[0002]

2. Description of the Related Art A conventional light projector is disclosed in, for example,
The thing described in 1-33614 is known. This light projecting device is composed of a plurality of support members that gradually become thinner, and a support member configured to sequentially insert a thin support member inside a thick support member so as to be vertically expandable and contractible, and a thinnest uppermost support member. A lighting device provided at an upper end portion of the member, a wire rope having one end fixed to a lower end portion of the uppermost column member, upper and lower ends of an intermediate column member, and an upper end of a thickest lowermost column member; A light guide that includes a guide member on which the wire rope is provided and a winch to which the other end of the wire rope is fixed, and that expands and contracts the column by unwinding the wire rope. A plurality of locking portions arranged in a vertical direction are provided on a side surface portion of the pillar member inserted inside the lowermost pillar member, and a part of the locking portion is exposed above the lowermost pillar member. It can rotate freely with the hole A stopper is provided for engaging with the locking portion from the hole when turning toward the column, and the guide member is provided on the stopper, and the wire rope is wound around the stopper. A spring is provided between the lowermost column member and the stopper so as to rotate in a direction away from the stop portion, and the stopper is rotated in a direction engaging with the locking portion. .

[0003]

However, in the above-mentioned conventional floodlight, it is difficult to understand when the wire rope is wound by the winch to extend the support post to the maximum, and even though the support post is extended to the maximum. However, if the wire rope was further wound, a large tensile force would be applied to the wire rope to cut the wire rope, or the wire rod would pull the uppermost column horizontally, which was not convenient. . In addition, it is possible to measure the height of the extended support, but it is not possible to know the exact height.Therefore, even if the support comes to the lower limit position, the wire take-up reel is used to rewind the winch further. The wire was loosened inside, and the wire was disturbed due to the stress applied to the wire, causing the wire to be wound and causing damage to the wire. In addition, when the wire rope is cut, the stopper mechanism provided to prevent the extended strut from dropping and shrinking is exposed, so dust adheres to this stopper mechanism and it may not function properly, or this stopper mechanism may not function properly. There was a risk of being bitten. An object of the present invention is to provide a light projecting device that solves the above-mentioned problem.

[0004]

Means for Solving the Problems] To achieve the above object, the invention according to claim 1 is inserted into the inner periphery of the bottom of the tower 2 ₀ fixed to the base 1, made stepwise thinner concatenating a plurality of struts telescopically, fitted with a lamp member 3 to the upper end of the uppermost tower 2 _3, 2 uppermost tower 2 ₃ lower than the wire 4 engaged with the lower end 2b of the strut ₂ as from the lower strut 2 ₂ locked to the lower part of the tower 2 ₁ of the upper end portion 2c, wound around the wire between the connected sequentially in this context struts wound around the pulley 5 ₂ provided at the upper end go, seat winding the wire 4 'engaged with the support post 2 ₂ of the lower end 2d of from 2 stages above post 2 ₀ lowermost in sheaves 5 ₁ of the upper end of the upper strut 2 ₁ from post 2 ₀ lowermost further, the on pulley 5 ₃ provided at the lower end of the tower 2 ₁ of the upper than the strut 2 ₀ lowermost Over come, a light projection apparatus the lower end configured as wound in the winch 6 provided on the base 1 of the wire 4 ', the lower end 2b or the bottom of the tower 2 ₀ of the uppermost tower 2 ₃ the engaging piece 7 is fixed closer to the locking position of the wire 4, 4 'which engage more 2 stages above the post 2 ₂ of the lower end 2d, as top of the tower 2 ₃ may be highest in the extension wire when the 4,4 'is pulled, the engaging piece 7 is top of the tower 2 ₃ or bottom of the tower 2 ₀ from the 2-stage top posts 2 ₂
Caught in the side wall of the slit 2a formed in the longitudinal direction, it is obtained by a light projecting apparatus characterized by being configured so that the top of the tower 2 ₃ is extended to the maximum height is found . Since such a light projecting device, when the strut is extended to the maximum height, the top of the tower 2 ₃
Post 2 with the lower end 2b or the top of the tower 2 ₃ below
Engaging piece 7 fixed closer to the locking position of the wire 4, 4 'which engages the lower end 2d of _2, the top of the tower 2 ₃ or uppermost tower 2 ₃ than the lower of the tower 2 ₂ The wires 4, 4 'are no longer pulled by being hooked on the slits 2a formed in the side walls, and it becomes immediately apparent in response to the support columns having extended to the highest height.

[0005] The invention according to claim 2, inserted into the inner periphery of the base bottom of the tower 2 ₀ fixed to 1, stepwise plurality of struts and telescopically connected to narrowing, most attaching a lamp member 3 to the upper end of the upper strut 2 _3, top of the tower 2 ₃
The wire 4 engaged with the lower end 2b wound around it from the pulleys 5 ₂ provided at the upper end of the tower 2 ₂ of the lower locked from post 2 ₂ of the lower to the upper end portion 2c of the lower bar 2 ₁ sequentially such relationship go wound wire between the connecting strut, the bottom of the tower 2 ₀ than 2 stages above the posts 2 ₂
Posts 2 of a wire 4 'engaged with the lower end 2d of the lowermost ₀
More wound around the pulley 5 ₁ of the upper strut 2 ₁ of the upper end portion, further, the wound around the pulley 5 ₃ provided at the lower end of the upper strut 2 ₁ from post 2 ₀ lowermost, the wire 4 ' A light-emitting device configured to wind a lower end of the winch 6 by a winch 6 provided on the base 1, wherein a screw shaft 8 that rotates in conjunction with rotation of a wire winding reel 6f of the winch 6 has a base end portion. The pointer 9 into which the 9a is screwed moves along the column height scale 10 graduated in accordance with the column height, and moves to both ends of the column height scale 10 when the column height is the minimum and maximum. ,
The light projection device is characterized in that the pole height display means 11 configured to function as a stopper for restricting the vertical movement range of the pole without moving any further is provided on the winch 6. With such a light emitting device, when the winch 6 is operated to wind a wire and extend the column, the pointer 9 constituting the column height display means 11 is scaled in accordance with the column height. Pillar height scale 1
By moving along 0, the height of the extended strut can be accurately known, and when the height of the strut is at the minimum and maximum, the pointer 9 moves to both ends of the strut height scale 10, Since it cannot move above, the range of the upper limit position and the lower limit position of the lamp member 3 can be determined.

[0006] The invention according to claim 3, inserted into the inner periphery of the base bottom of the tower 2 ₀ fixed to 1, stepwise plurality of struts and telescopically connected to narrowing, most attaching a lamp member 3 to the upper end of the upper strut 2 _3, top of the tower 2 ₃
The wire 4 engaged with the lower end 2b wound around it from the pulleys 5 ₂ provided at the upper end of the tower 2 ₂ of the lower locked from post 2 ₂ of the lower to the upper end portion 2c of the lower bar 2 ₁ sequentially such relationship go wound wire between the connecting strut, the bottom of the tower 2 ₀ than 2 stages above the posts 2 ₂
Posts 2 of a wire 4 'engaged with the lower end 2d of the lowermost ₀
More wound around the pulley 5 ₁ of the upper strut 2 ₁ of the upper end portion, wound around the pulley 5 ₃ provided at the lower end of the upper strut 2 ₁ from post 2 ₀ lowermost, further via a support shaft 12 wound around the pulley 5 ₄ provided on the pulley cover 13 which is provided rotatably Te, a light projecting device configured to wind in the winch 6 provided on the base 1, the pulley cover 13 and the base A spring 14 is provided between the pulley cover 13 and the pulley cover 13 to apply a turning force in a direction opposite to the turning force when the pulling force of the wire is lost and the turning force of the pulley cover 13 is lost. When the wire 4 'is cut and the tensile force is lost, the pulley cover 13 is rotated by the urging force of the spring 14 to pull the link 15. By
The locking bar 16 provided on the link 15 is connected to the lowermost column 2
₀ inserted struts _{2 1,} 2 2, _{2 3} locking holes 2 bored in the
was inserted into e, the post 2 ₀ lowermost, is obtained by the light projecting device, characterized in that from the upper strut it is provided a drop-shrinkage preventing means 17 act so as not to be dropped and contract . With such a light projecting device, when the wire is cut, the turning power of the pulley cover 13 is lost, and the pulley cover 13 turns in the opposite direction to the turning power by the urging force of the spring 14, and the link 15 is pulled, the latch rod 16 provided to the link 15, the bottom of the tower 2 ₀
Post ₂ inserted into the _1, 2 2, ₂ locking hole 2e which is formed in the ₃
Is inserted into, so that the upper struts than struts 2 ₀ lowermost does not suddenly drop or contraction.

The invention according to a fourth aspect is directed to the base 1
It is inserted into the inner periphery of the bottom of the tower 2 ₀ fixed on, provided with a gap G between the struts connecting a plurality of struts made gradually thin telescopically, the slider member 18 ₁ in the gap G is obtained by the light projecting device, characterized in that a 18 _2. Provided with a gap G between the strut telescopically connected this way, by providing the slider member 18 _1, 18 ₂ in the gap G, to reduce the friction during expansion and contraction of the struts, telescopic struts You can do it smoothly.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the light projecting device of the present invention will be described below with reference to the drawings. 1A and 1B show an embodiment of a light projecting device according to the present invention, wherein FIG. 1A is a side view showing a state where a support is extended, and FIG. 1B is a side view showing a state where a one-stage support is extended. 2A and 2B show a connecting portion between the uppermost column and the lower column of the light projecting device of the present invention, and FIG. 2A is a side view showing a state where the uppermost column is being extended. (B) is a side view showing the state where the uppermost column is extended to the highest height, and (c) is a cross-sectional view taken along line CC in (b).

[0009] light projecting device of the invention according to claim 1, as shown in FIG. 1, is inserted into the inner periphery of the base bottom of the tower 2 ₀ fixed to 1, stepwise plurality of narrowing concatenating strut telescopically, top mounting a lamp member 3 at the upper end of the tower 2 to _3, the uppermost bar 2 ₃ wire 4 engaged with the lower end 2b it from the lower part of the tower 2 ₂ of the upper end Pulley 5 ₂
Wound in the locked from strut 2 ₂ of the lower to the upper end portion 2c of the lower strut 2 _1, go wound the wire between successive such relationship articulated strut, the bottom of the tower 2
₀ wire 4 'engaged from the post 2 ₂ of the lower end 2d of 2 stages above wound around the pulley 5 ₁ of the upper end of the upper strut 2 ₁ from post 2 ₀ lowermost, further wherein the bottom of the column 2 ₀ from wound around the pulley 5 ₃ provided at the lower end of the tower 2 ₁ of the upper, a light projecting device and a lower end configured as wound in the winch 6 provided on the base 1 of the wire 4 ' Te, the lower end 2b or the bottom of the uppermost tower _{2 3} struts _{2 0} than 2
In post _{2 2} (embodiment of the level upper, the strut _{2 2}
Is a strut of one step below the top of the tower 2 _3, when more concatenated strut engages the lower end 2d of has a bottom of the tower 2 ₀ than 2 stages above the post) The locking piece 7 is fixed at a position close to the locking position of the stopped wires 4, 4 ',
When the top of the tower 2 ₃ is the wire 4,4 'to be the highest in the extended pulled, tower 2 engaging piece 7 is below the tower 2 ₃ or uppermost bar 2 ₃ uppermost
_{2 (in} the embodiment, the pillar 2 ₂ is the strut one step below the top of the tower 2 _3, when more connecting struts from post 2 ₀ lowermost 2 rows above caught in the side wall of which a strut) into the slit 2a formed along the longitudinal direction, that is characterized by being configured so that the top of the tower 2 ₃ is extended to the maximum height is found It is.

[0010] Having such a light projecting device, when the strut is extended to the maximum height is at the top of the tower 2 ₃ of the lower end 2b or the top of the tower 2 ₃ from the lower bar 2 ₂ of the lower end 2d engaging piece 7 fixed closer to the locking position of the wire 4, 4 'which engaged is formed on the sidewall of the tower 2 ₂ lower than its top of the tower 2 ₃ or uppermost tower 2 ₃ slits 2a, the wires 4, 4 'could not be pulled any further, and it could be immediately recognized in response to the pulling of the wire that the strut extended to the highest height, and even though the strut extended to the highest height. Instead, take up the wire strongly and cut the wire, and avoid pulling the column sideways with the wire.

[0011] Incidentally, the so strut 2 ₁ pulleys 5 ₃ provided at the lower end can be inserted, the width of the slit formed at the bottom of the tower 2 ₀ side is designed. Further, the support is formed by, for example, bending a galvanized steel plate having a required width and a required length into a triangular prism, or bending the steel plate into a triangular prism and then galvanizing. When the steel plate is bent and formed into a triangular prism, the slits 2a can be formed in the side wall of the column along the longitudinal direction by bending the steel plate at a desired gap without completely contacting both side edges. The shape of the support is not limited to a triangular prism, but may be a quadratic prism or an elliptical cylinder. The reason why the column is not formed into a column is to prevent the connected column from rotating.

Further, lamp member 3 attached to the upper end of the uppermost tower 2 _3, that not mounted on the top just above the strut 2 _3, the upper portion from the dip angle of elevation laterally variably bracket 3a, a forked bracket 3b is attached to the bracket 3a, and electric lights 3c, 3c are attached to the tip of the forked bracket 3b.

As an embodiment of the winch 6, as shown in FIG. 3, a worm gear 6e mounted on a reel shaft 6d meshes with a worm 6c mounted on a rotating shaft 6b rotated by a handle 6a. By rotating the handle 6a, the wire take-up reel 6f is configured to rotate. With this configuration,
The rotation of the worm 6c can be smoothly transmitted to the worm gear 6e, but the rotation of the worm gear 6e cannot be smoothly transmitted to the worm 6c. Therefore, the wire winding reel 6f of the winch 6 is rotated to wind the wire 4. Even if you release the handle from the handle 6a while the column is extended, the extended column does not fall or contract. When contracting the strut,
This can be done by rotating the handle 6a in the reverse direction. The winch 6 is not limited to this configuration, and as a means for preventing reverse rotation of the wire take-up reel 6f, a gear provided on the rotation shaft of the wire take-up reel 6f is provided with a ratchet mechanism for preventing reverse rotation, and contracts the elongated support. When you let
Various design changes are possible, such as a configuration that releases the ratchet function of the ratchet mechanism.

FIG. 3 shows a pole height display means which is a main part of the light emitting device according to the second aspect of the present invention, and FIG. 3 (a) shows a pole height display means provided on a side of a winch having a wire winding reel. 2 (b) is a cross-sectional view taken along line BB in FIG. 2 (a), and FIG. 2 (c) is a cross-sectional view taken along line CC in FIG. 2 (a). The structure of the extendable strut portion of the light projecting device according to the invention is the same as that of the strut portion according to claim 1. The main part of the light emitting device according to the second aspect of the present invention is that a pointer 9 having a base end 9a screwed to a screw shaft 8 rotating in conjunction with rotation of a wire take-up reel 6f of the winch 6 is supported by a support. Height scale part 1 scaled according to the height
0, and when the height of the column is at the minimum and maximum, the column moves to both ends of the column height scale portion 10, and does not move any more, and also functions as a stopper for regulating the vertical movement range of the column. The high display means 11 is provided on the winch 6.

Since the light projecting device is constructed as described above, when the winch 6 is operated to wind the wire to extend the support, the pointer 9 constituting the support height display means 11 corresponds to the height of the support. Then, by moving along the graduated column height scale portion 10, the height of the extended column can be known. Also, when the support is extended to the maximum, the pointer 9 moves to the right end in the figure, for example, and cannot move any further. Therefore, the maximum extension of the support can be sensed in response to winding the wire. When moves to the left end, it can be detected that the support has shrunk to the minimum by winding the wire.

The embodiment according to the third aspect of the present invention is configured as shown in FIGS. 4 and 5.
(A) is a plan view, (b) is a side view, FIG. 5 shows a state where a wire is cut, (a) is a plan view,
(B) The figure is a side view.

According to a third aspect of the present invention, there is provided a light projecting device comprising:
Is inserted into the inner periphery of the bottom of the tower 2 ₀ fixed in stepwise plurality of struts and telescopically connected to narrowing, mounting the lamp member 3 at the upper end of the tower 2 ₃ uppermost, lowermost its lower strut 2 ₂ from the lower part of the strut 2 ₁ of the upper end portion of the wire 4 engaged in the upper part of the tower 2 ₃ of the lower end 2b wound around the pulley 5 ₂ provided from the upper end of the tower 2 ₂ lower it locked to 2c, sequentially such relationship between articulation strut gradually wound wire in which in the wire 4 'engaged with the support post 2 ₂ of the lower end 2d of from 2 stages above post 2 ₀ lowermost wound around the pulley 5 ₁ of the upper end of the tower 2 ₁ of the upper than the strut 2 ₀ lowermost, further wherein from post 2 ₀ lowermost upper strut 2 ₁
Configuration that wound around the pulley 5 ₃ provided in the lower portion is the same as the configuration according to claims 1 and 2.

The light projecting device of the invention according to the third aspect, in addition to the above construction, the wire 4 'which wound around the pulley 5 _3,
Via a support shaft 12 wound around the pulley 5 ₄ provided on the pulley cover 13 provided rotatably, a light projecting device configured to wind in the winch 6 provided on the base 1, the pulley cover A spring 14 is provided between the base 13 and the base 1 so as to apply a turning force in a direction opposite to the turning force when the pulling force of the pulley cover 13 is lost by eliminating the pulling of the wire. Is provided, and a locking rod 16 is provided on the link 15. When the wire 4 'is cut and the tensile force is lost, the pulley cover 13 is rotated by the urging force of the spring 14 to rotate the pulley cover 13. Link 15
By pulling the lock bar 16 provided on the link 15.
The strut ₂ 1 inserted into tower _{2 0 lowermost,} 2 2, _{2 3}
At the lowermost column 2
₀ is provided with a drop / shrinkage preventing means 17 acting so as to prevent the upper strut from falling / shrinking.

With such a light emitting device, when the wire is cut, the turning power of the pulley cover 13 is lost, and the pulley cover 13 turns in the direction opposite to the turning force by the urging force of the spring 14, the link 15 is pulled, the latch rod 16 provided to the link 15, the strut _{2 1} or posts ₂ 1 inserted into tower _{2 0} lowermost, _{2 2} or struts _{2 1,} 2 2, _{2 3} side walls of was inserted into the locking hole 2e which is formed in the upper stage of the column from the support column 2 ₀ lowermost rapidly falling,
Will not shrink.

In this embodiment, since the cross-section of the support is triangular, the shape of the tip of the link 15 is also triangular, and both ends of the link 15 are the lower end of the pulley cover 13 in the drawing. And is attached to the support side. The head of the locking rod 16 is slidably inserted into a long hole 15a formed in an inclined piece toward the vertex of the triangular link 15, and a nut 16a is attached to the head of the locking rod 16. ing. The tip portion 16b of the engagement rod 16 is installed to be inserted into the hole formed on the side wall of the tower 2 ₀ lowermost.

As shown in FIG. 4, when the wire 4 'is pulled, the pulley cover 13 is rotated clockwise in the figure, and the link 15 is pushed in the direction of arrow A, the locking bar 16 is pushed. of the head of the nut 16a is, will be moved to the right side in FIG inclined piece towards the vertex of the relatively triangular link 15, the engagement rod 1 from the bottom of the tower 2 ₀ of holes
6 is pulled out.

When the wire 4 'is cut, the pulley cover 13 is rotated counterclockwise by the spring 14, and when the link 15 is pulled in the direction of arrow B, the nut 16a at the head of the locking rod 16 is turned. but it will be moved to the left in FIG inclined piece towards the vertex of the relatively triangular link 15, the engagement Tomebo 16 posts 2 ₁ or posts 2 ₁ inserted into tower 2 ₀ lowermost, 2 ₂ or struts ₂ 1,
2 _2, 2 ₃ are inserted into the locking hole 2e which is formed in the side walls of the strut is not inserted more at the bottom of the tower 2 _0, when the wire 4 'is disconnected, elongated struts falling -No shrinkage.

[0023] The invention according to claim 4, as shown in FIG. 2, is inserted into the inner periphery of the base bottom of the tower 2 ₀ fixed to 1, stepwise narrowing plurality of struts provided with a gap G between the strut telescopically connecting the one in which the light projecting device, characterized in that the slider member 18 _1, 18 ₂ provided in the gap G. In this manner, the slider members 18 ₁ , 1
By providing the 8 _2, to reduce the friction during expansion and contraction of the struts, telescopic struts so performed smoothly. The slider member ₁₈₁ is fixed made of plastic so as to protrude from the side wall inwardly at both end portions of the central portion and a piece of triangular two pieces of the upper end of each post, and the other slider member 18 ₂ is fixed so as to protrude outward from the side wall of the lower end of each piece of each strut. In this manner, a gap G is provided between the columns that extend and contract freely, and the slider members 18 ₁ and 18 ₂ are provided in the gap G.
Is provided, the friction at the time of expansion and contraction of the column is reduced, and the expansion and contraction of the column can be performed smoothly.

[0024]

In the light emitting device according to the first to third aspects of the present invention, since a plurality of wires are used, the up-and-down movement of the column can move faster than that of a single wire, and the wire can be moved. The winding amount of the winding reel portion can be reduced, and the wire is less damaged.

The light projecting device according to the first aspect of the present invention is constructed as described above, so that when the post extends to the highest height, the lower end of the uppermost post or the lowermost post has The locking piece fixed near the locking position of the wire locked to the lower end of the column on the step is caught by the slit formed on the side wall of the column, the wire is not pulled any further, and the column is the best. The height of the wire can be immediately recognized by the tension of the wire, and the pole is stretched to the highest height. .

The light projecting device according to the second aspect of the present invention is constructed as described above, so that when the light projecting device is used in a place where the height of the support is limited, the pointer of the support height display means is set to the position of the support. By moving along the high graduation, the height of the support can be easily adjusted to a desired height. Also, when the support is at the highest height, the pointer moves to one end of the support height scale and cannot move any further, and has a stopper function that regulates the upper limit of the extension of the support. When winding up strongly, cutting the wire, or when the support is at the minimum height, the pointer moves to the other end of the support high scale and cannot move any further, and the lower limit of the reduction of the support is set. Since there is a stopper function for regulating, the wire is not damaged due to the wire becoming too loose and becoming turbulent, and the life of the wire can be extended.

The light projecting device of the invention according to claim 3 of the present invention is constructed as described above. Therefore, when the wire is cut, the turning power of the pulley cover is lost, and the turning force of the pulley cover is reversed by the urging force of the spring. The pulley cover rotates in the direction, the link is pulled, and the locking rod provided on this link is inserted into the locking hole formed in the column inserted into the lowermost column, and the lowermost column is inserted. The upper column suddenly falls
Will not shrink.

The light projecting device of the invention according to a fourth aspect of the present invention is constructed as described above, so that a gap is provided between the columns which extend and contract so as to extend and contract, and a slider member is provided in the gap. Thus, the friction at the time of expansion and contraction of the support is reduced, and the expansion and contraction of the support can be performed smoothly.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a light projecting device of the present invention, and (a)
The figure is a side view of a state where the support is extended, and the figure (b) is a side view of a state where the support is extended by one step.

FIG. 2 shows the uppermost column that constitutes the light emitting device of the present invention;
FIG. 4A is a side view showing a state in which the uppermost column is being extended, and FIG. 4B is a side view showing a state in which the uppermost column is being extended, and FIG. (C) is a cross-sectional view taken along line CC in FIG. (B).

FIG. 3 shows a pole height display means which is a main part of the light emitting device according to the second aspect of the present invention, and FIG. 3 (a) shows a side surface of the pole height display means provided on a side of a winch having a wire winding reel. (B) is a cross-sectional view taken along line BB of (a), and (c) is a cross-sectional view taken along line CC of (a).

FIG. 4 shows an embodiment of the invention according to claim 3,
(A) is a plan view and (b) is a side view.

5A and 5B show a state in which a wire is cut in the embodiment of the invention according to claim 3, wherein FIG. 5A is a plan view and FIG. 5B is a side view.

[Explanation of symbols]

1 base plate 2 ₀ lowermost tower 2 ₁ 2-stage of the tower 2 ₂ 3-stage of the tower 2 ₃ uppermost strut 2a slits 2b lower 2c upper section 2d bottom 2e locking hole 3 lamps member 3a bracket 3b forked bracket 3c Electric light 4 Wire 5 ₁ Pulley 5 ₂ Pulley 5 ₃ Pulley 5 ₄ Pulley 6 Winch 6a Handle 6b Rotary shaft 6c Warm 6d Reel shaft 6e Worm gear 6f Wire take-up reel 7 Locking piece 8 Screw shaft 9 Guide 10A Base end High scale portion 11 Support height display means 12 Support shaft 13 Pulley cover 14 Spring 15 Link 15a Long hole 16 Lock bar 16a Nut 16b Tip end 17 Fall / shrinkage preventing means 18 ₁ Slider member 18 ₂ Slider member

Claims (4)

[Claims] 1. An electric lamp member is mounted on the upper end of the uppermost column by inserting it into the inner periphery of the lowermost column fixed to the base and connecting the plurality of columns gradually narrowing in a stretchable manner. , The wire fixed to the lower end of the uppermost column is wrapped around a pulley provided at the upper end of the lower column, and the wire is locked to the upper end of the lower column than the lower column. Wrap the wire between the pillars connected in a row, and wire the wire locked at the lower end of the pillar two steps above the lowermost pillar around the pulley at the upper end of the pillar above the lowermost pillar,
Further, the light projecting device is configured such that the wire is wound around a pulley provided at a lower end portion of the upper pillar than the lowermost pillar, and a lower end of the wire is wound by a winch provided on the base. Fix the locking piece close to the locking position of the wire that is locked to the lower end of the upper column or the lower end of the column two stages above the bottom column, so that the top column can be extended to the maximum. When the wire is pulled, the locking piece is caught by the slit formed along the longitudinal direction on the side wall of the uppermost column or the column two columns above the lowermost column, so that the uppermost column is the highest height. A light projecting device characterized in that the light projecting device is configured so as to be recognized as being elongated. 2. A lamp member is attached to the upper end of the uppermost column by inserting it into the inner periphery of the lowermost column fixed to the base, connecting the plurality of columns gradually narrowing in a stretchable manner. , The wire fixed to the lower end of the uppermost column is wrapped around a pulley provided at the upper end of the lower column, and the wire is locked to the upper end of the lower column than the lower column. Wrap the wire between the pillars connected in a row, and wire the wire locked at the lower end of the pillar two steps above the lowermost pillar around the pulley at the upper end of the pillar above the lowermost pillar,
Further, a light projecting device configured to be wound around a pulley provided at a lower end portion of the upper column than the lowermost column, and to wind a lower end of the wire by a winch provided on the base. The pointer, whose base end is screwed into a screw shaft that rotates in conjunction with the rotation of the winch wire take-up reel, moves along the column height scale that is graduated according to the height of the column. At the minimum and maximum heights, the winch is provided with a pole height indicating means configured to move to both ends of the pole height scale portion, not to move any more, and also to function as a stopper for regulating the vertical movement range of the pole. A floodlight device characterized by the above-mentioned. 3. A plurality of columns, which are gradually reduced in thickness, are inserted into the inner periphery of the lowermost column fixed to the base so as to extend and contract, and a light member is attached to the upper end of the uppermost column. , The wire fixed to the lower end of the uppermost column is wrapped around a pulley provided at the upper end of the lower column, and the wire is locked to the upper end of the lower column than the lower column. Wrap the wire between the pillars connected in a row, and wire the wire locked at the lower end of the pillar two steps above the lowermost pillar around the pulley at the upper end of the pillar above the lowermost pillar,
A winch provided on a base by wrapping around a pulley provided at a lower end portion of a column above the lowermost column and further wrapping around a pulley provided on a pulley cover rotatably provided via a support shaft. A light-emitting device configured to be wound up, wherein between the pulley cover and the base, when the pulling force of the pulley cover is lost by eliminating the pulling of the wire, the turning power in the opposite direction to the turning power is provided. The pulley cover is provided with a link extending in the column direction, and a locking bar is provided on the link. When the wire is cut and the tensile force is lost, the pulley cover is turned by the urging force of the spring. By moving and pulling the link, the locking rod provided on the link is inserted into the locking hole formed in the column inserted into the lowermost column, and the lowermost column is inserted into the uppermost column. The struts will not fall or shrink A light projecting device provided with a fall / shrinkage preventing means acting as follows. 4. A gap is provided between pillars which are inserted into the inner periphery of the lowermost pillar fixed to the base to connect a plurality of pillars which gradually become narrower in a stretchable manner. The light projecting device according to claim 1, further comprising a slider member.