JPH059746Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a display device used to display iron lids of fire hydrants, water taps, gas hydrants, and the like.

[Conventional technology]

Most fire hydrants, water and sewage hydrants, etc. are housed in manholes cut into the ground of roads, etc., and the top surface of the manhole is closed off with a strong iron lid.

In order to identify the type of facility housed in this way, conventionally, the surface of the iron lid was colored to indicate the type of facility, for example, yellow for fire hydrants, light blue for water supply hydrants, green for gas hydrants, and so on.

The surface of such iron lids is colored by applying paint.

[Problem that the invention attempts to solve]

However, there is a problem in that it is difficult to visually recognize the presence and color of the iron lid, especially at night, and it is extremely difficult to confirm the accommodation location of the facility and identify the type of accommodation facility.

For this reason, it has been proposed to apply fluorescent paint to iron lids, but fluorescent paint has a short lifespan and poor durability, so it is not suitable as a paint for iron lids that are exposed to the ground.

Therefore, an object of this invention is to provide a display device for iron lids that allows the accommodation location of a facility and the type of accommodation facility to be easily and reliably viewed, especially at night.

[Means for solving problems]

This invention consists of two grooves having a predetermined depth provided in a flat iron lid, a transparent protection plate for covering the opening upper part of each of the grooves, and a transparent protection plate provided in one of the grooves. a light emitting mechanism, a solar cell provided in the other groove, and a battery attached to the back surface of the iron lid, which is charged by the solar cell and supplies power to the light emitting mechanism. The light-emitting mechanism includes a colored translucent resin filled in one of the grooves, and a light-emitting diode having a dial and a night lighting mechanism embedded inside the resin. It has characteristics.

Next, this invention will be explained with reference to the drawings.
FIG. 1 is a plan view showing one embodiment of the invention, FIG. 2 is a cross-sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B--B in FIG.

As shown in FIGS. 1 to 3, rectangular grooves 12a and 12b having a predetermined depth are provided in the center of a rectangular iron lid 1 having a predetermined thickness.

On the back side of both left and right ends of the iron lid 1, there are batteries 4,
4 is installed.

The iron cover 1 fits into a rectangular frame 6 embedded in the upper edge of a manhole 14 bored into the ground 5 and accommodating facilities such as fire hydrants.

A light emitting mechanism 3 is provided within the groove 12a.

The light emitting mechanism 3 includes a transparent protection plate 8 that covers the upper part of the opening of the groove 12a, a colored translucent resin 9 filled in the groove 12a, and a dial plate 11 embedded inside the resin 9. and six light emitting diodes 10.

The protection plate 8 is made of a material having excellent transparency, weather resistance, abrasion resistance, scratch resistance, impact resistance, and heat and cold resistance, such as polycarbonate.

Each of the light emitting diodes 10 is connected to batteries 4,4. Furthermore, the light emitting diode 10 has an automatic nighttime lighting mechanism (not shown) and is lit only at night. For example, the words "fire hydrant" are written on the dial 11.

The colored translucent resin 9 used is, for example, a color representing a fire hydrant, that is, yellow.

A solar cell 2 is provided within the groove 12b.

The upper surface of the solar cell 2 serves as a light receiving section, and on the upper surface of the light receiving section, a protective plate 13 made of the same material as the above-mentioned protective plate 8 covers the upper part of the opening of the groove 12b.

The solar cell 2 is connected to batteries 4, 4 via a charging mechanism (not shown).

During the daytime, the battery 4, 4 is charged by the charging mechanism.
is charged by the solar cell 2 that receives sunlight.

On the other hand, at night, power is supplied from the batteries 4, 4 to the light emitting diode 10 by the automatic night lighting mechanism, the light emitting diode 10 lights up, and the colored translucent resin 9 and the dial 11 are illuminated.

As a result, a yellow colored translucent resin 9
Furthermore, the words "Fire Hydrant" written on the dial 11 stand out clearly and are easily visible even in the darkness of the night.

[Effect of idea]

As explained above, according to this invention, the following useful effects can be obtained.

The use of light-emitting diodes provides extremely good visibility at night, making it possible to reliably identify the installation facility.

The light emitting mechanism, solar cells, and battery are integrally attached to the iron lid, so there is no need for any wiring work.

By making the iron lid used in this invention the same size as the existing iron lid, new construction requires only replacing the iron lid, and the construction cost remains the same.

By using solar cells, a battery charging mechanism, and an automatic night-time lighting mechanism, stable luminous performance can be maintained for a long period of time.

The solar cells and light emitting mechanism are protected with a protective plate made of polycarbonate or the like, which has excellent durability, so they have the strength to withstand long-term use.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of this invention;
Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a cross-sectional view of Figure 1.
It is a sectional view taken along the line BB in the figure. In the drawings, 1... iron lid, 2... solar cell, 3... light emitting mechanism, 4... battery, 5... ground, 6... frame,
8, 13... Protective plate, 9... Colored translucent resin, 10... Light emitting diode, 11... Dial board, 12a, 12b... Concave groove, 14... Manhole.

Claims (1)

[Scope of utility model registration request] 2 having a predetermined depth provided on a flat iron lid
a transparent protection plate for covering the opening upper part of each of the grooves, a light emitting mechanism provided in one of the grooves, a solar cell provided in the other groove; charged by solar cells, and
and a battery attached to the back surface of the iron lid for supplying power to the light emitting mechanism, and the light emitting mechanism consists of a colored translucent resin filled in one of the grooves, and a colored translucent resin filled in one of the grooves. A display device for an iron lid, characterized by comprising a dial plate and a light emitting diode with a night lighting mechanism embedded inside.