JP4039972B2 - Light emitting device for displaying the position of underground structures - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a light emitting device for displaying the position of a fire hydrant and other underground structures.
[0002]
[Prior art]
For fire fighting to be successful enough, it depends on how quickly the fire hydrant can be found, and for that reason, the location of the fire hydrant is highlighted by signs and paint on the road surface. However, it is difficult to locate the fire hydrant at night, and it takes time to find the fire hydrant.
[0003]
On the other hand, Japanese Patent Application Laid-Open No. 8-35235 proposes an invention that can emit a desired display from a lid, and if this is applied to a fire hydrant, it can be useful for finding a fire hydrant at night. However, when configured as in the invention of the same issue, the light emitter is embedded in the light diffusive columnar support, which causes a problem that it is difficult to find from the outside. In addition, as shown in FIG. 5 as the prior art in the invention of the same issue, when coming out of the road surface, it is easy to find from the outside, but on the other hand, the weight is excessive due to the necessity of increasing the structural strength or the amount of light transmission is reduced. The problem of doing.
[0004]
[Problems to be solved by the invention]
The present invention has been made paying attention to the above points, and the problem is that it is easy to find from the outside at night, and at the same time, the position of the underground structure is less likely to be damaged without excessively increasing the structural strength. It is to provide a light emitting device for display.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a light emitting device for displaying the position of a fire hydrant or other underground structure provided in a case with a light emitting surface facing upward, and mounting means for attaching to a target location as described above A light emitting part at the bottom of the case, and a receiving part for attaching the light emitting part, has a concave part for accommodating the light emitting part so as to be movable up and down, and between the case and the receiving part in order to constantly bias the light emitting surface upward An elastic body that is disposed and absorbs an external force exerted on the light emitting surface by elastic deformation, and the attachment means includes a female screw portion provided on a lower surface of the case and a bolt having a tip screw portion screwed therein ; upwardly disposed bolts from the bottom into the bolt insertion holes provided in the bottom of the recess to accommodate the light-emitting portion, screwing the upper end into the internal thread portion of the lower surface of the case, the bolt head recess bottom Hit and is obtained by taking steps that configured to define a push-up position of the light emitting portion by the elastic member.
[0006]
Since the light emitting unit in the present invention is provided with the light emitting surface facing upward, for example, the light emitting surface can be arranged on the surface of the fire hydrant lid or the road surface in the vicinity thereof, and good visibility can be obtained. it can. The light emitting unit is incorporated in the case together with the light emitter. The light-emitting unit includes a light-emitting body that is a light-emitting functional part, a power supply unit that sends power to the light-emitting body, and a control unit that controls the light emission mode of the light-emitting body, and it is desirable to use a solar cell as the power supply unit.
[0007]
This light emitting unit is unitized by incorporating all functional parts such as a light emitter in a case, and may have a structure in which all functional parts are held in, for example, an appropriate resin material. This is a desirable mode. Further, the light emitting part has an attaching means at the lower part of the case. The attachment means is means for attaching the light emitting portion provided in the case to a target location, and corresponds to, for example, a bolt shaft or a screw hole for attaching such a shaft.
[0008]
An accommodation part is required at a target place to which the light emitting part is attached. The accommodating portion requires a portion for accommodating the light emitting portion in a movable manner, and the case is incorporated by the attachment means. The accommodating portion can be provided on the lid of the underground structure. In this case, a concave portion is provided on the lid surface to accommodate the light emitting portion. In addition, the housing portion is provided at a location near the cover receiving frame, for example, as a display for indicating the position of the underground structure.
[0009]
An elastic body is disposed between the case and the accommodating portion in order to constantly urge the light emitting portion with the light emitting surface facing upward. The elastic body is made of an elastically deformable material, and has an impact buffering function that protects the light emitting portion from destruction by absorbing an external force exerted on the light emitting surface. In addition, the elastic body always places the light emitting surface of the light emitting part in a fixed position by urging upwards on the surface of the lid of the fire hydrant lid in cooperation with the attaching means so that the light emitting surface has the best visibility. Works.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. 1 to 5 relate to Example 1 in which the present invention is applied to a fire hydrant lid, and light emitting devices 11 are provided at two locations on the fire hydrant lid 10.
[0011]
The fire hydrant lid 10 is made of ductile cast iron formed by casting, and two concave portions 13 are provided on the lid surface as a portion for housing the light emitting portion 12. The light emitting unit 12 includes a light emitting unit 15 having a light emitting surface 14 having a convex lens shape thereon, a solar cell 16, a power source unit including a battery, a charge controller, and the like, and a control unit that controls a light emitting mode. (FIG. 3) and is incorporated in the case 18 while being held by a filler 19 made of a resin material.
[0012]
A female screw portion 21 is provided on the lower surface of the case 18 as attachment means, and a tip screw portion 22 of a bolt 23 which is also attachment means is screwed into the female screw portion 21. Further, the lower surface of the case 18 is provided with a concavo-convex portion 24, and is configured to engage with the mating concavo-convex portion 25 provided on the lid surface as a housing portion and move up and down.
[0013]
In Example 1, since the fire hydrant lid 10 is to be attached, the housing portion of the light emitting unit 12 is the concave portion 13 provided on the lid surface, and the bolt insertion port 26 is formed at the bottom of the concave portion for mounting the light emitting unit 12. Is provided. In the case of Example 1, the bolt insertion opening 26 is provided at the center of the mating uneven portion 25, and an elastic body 27 that biases the light emitting surface 14 upward is interposed around the mating uneven portion 25. . The push-up position of the light emitting unit 12 by the elastic body 27 is defined by attachment means including the bolt 23. Reference numeral 28 denotes a box wrench for bolt operation.
[0014]
In the light emitting device of Example 1 having such a configuration, the light emitting surface 14 slightly protrudes from the lid surface, and the entire light emitting surface is located at almost the same position as the lid surface, so that the visibility is very good. Facilitates discovery of fire hydrant positions. On the other hand, when an external force is applied to the apparatus 11 by the wheel 29, the light emitting function part is held by the filler 19 made of a resin material, and the elastic body 27 further absorbs the external force and contracts. It will not take damage. In addition, since the case 18 is made of cast metal and the light emitting function portion is protected, it can withstand long-term use on the road and it is easy to replace a damaged one.
[00 15 ]
FIG. 6 and subsequent figures show Example 2 in which the present invention is indirectly displayed with the position of the cover frame 30 of the fire hydrant being an underground structure, and the light emitting device 11 of the present invention takes the form of being implanted on the road surface 34 ( 7 and 8). Since the configuration of the light emitting device itself may be the same as in Example 1, the detailed description is omitted by using the reference numerals, but the concave portion is not provided as a part of the fire hydrant lid as a portion for housing the light emitting portion 12, so the concave portion 13 is installed using an outer case 31 having a recess 13 ′ similar to 13.
[0016]
In the case of Example 2, construction is performed directly on the road surface 34, thereby displaying the fire hydrant position. Therefore, the inner side of the outer case 31 may be the same as the concave portion 13, but a cylindrical portion 32 having a dimension allowing for the vertical stroke of the bolt 23 is provided on the lower surface (FIG. 6), and a cap 33 covering the end surface is attached. Also in this case, the light emitting surface 14 is on the road surface 34, and the position of the fire hydrant can be clearly indicated as in the first example.
[00 17 ]
【The invention's effect】
Since the present invention is to act and the composition described above, even in the night, to display the location of a fire hydrant and other underground structures by the light-emitting action, it becomes an object of helping early extinguishing to facilitate the discovery, the elastic member The push-up position of the light emitting part is defined by the attaching means, and the device itself has a built-in external force absorption mitigation mechanism, so that there is little possibility of being destroyed by the external force.
[Brief description of the drawings]
FIG. 1 is a plan view showing a first example of a light emitting device for displaying an underground structure position according to the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a cross-sectional view of a light emitting unit.
FIG. 4 is a cross-sectional view for explaining attachment / detachment.
FIG. 5 is a cross-sectional view for explaining the operation.
FIG. 6 is a cross-sectional view showing Example 2 of the present invention.
FIG. 7 is a plan view for explaining the installation situation of the above.
FIG. 8 is a cross-sectional explanatory view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Fire hydrant lid 11 Light-emitting device 12 Light-emitting part 13, 13 'recessed part 14 Light-emitting surface 15 Light-emitting body 18 Case 27 Elastic body 30 Lid receiving frame 31 Outer case

Claims (3)

A light-emitting device for displaying the position of a fire hydrant or other underground structure, provided in the case with the light-emitting surface facing upward, and a light-emitting unit having attachment means for attaching to a target location at the bottom of the case ; An external force exerted on the light emitting surface, which is disposed between the case and the housing portion so that the light emitting portion can be moved up and down as a housing portion to which the light emitting portion is attached , and is always urged upward. The mounting means comprises an internal thread portion provided on the lower surface of the case and a bolt having a tip screw portion screwed therein, and is provided at the bottom of the recess for housing the light emitting portion. was bolt insertion hole upwardly disposed bolts from the bottom, the screwing its upper end into the internal thread portion of the lower surface of the case, the bolt's head when the recess bottom, push the light emitting portion by the elastic member Emitting device for the configured underground construction position display to define a raised position. Provided with an uneven portion having around the bolt insertion holes in the casing lower surface, provided with a mating concave and convex portion on the concave bottom of the housing portion, the uneven portion is a mating concave-convex portion engageable with the form by the lowering of the light emitting portion The light emitting device for indicating the position of an underground structure according to claim 1, wherein an elastic body for biasing the light emitting portion upward is interposed around the mating uneven portion . As a part to store the light emitting part, a recessed part is provided on the lid surface of the fire hydrant or other underground structure, or a recessed part is provided by using an outer case in the vicinity of the lid receiving frame of the fire hydrant or other underground structure. The light emitting device for indicating the position of an underground structure according to claim 1, wherein the light emitting unit is incorporated in a case while being held by a filler.

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