JPH08319607A - Self-emission type display device - Google Patents

Abstract

PURPOSE: To improve visibility and waterproofness. CONSTITUTION: A solar battery 20 and an EL 30 are disposed on the flat upper surface of upper and lower box-form cases 40 and 50 and a storage battery 60 to store a power from the solar battery 20 and a control device to cause self-emission of an EL 30 to feed a power from the storage battery 60 when brightness of a periphery is reduced to a value lower than given brightness are contained therein. A transparent plate 10 is laminated on the solar battery 20 and the EL 30 and a gap between the periphery of the transparent plate 10 and the upper case 40 and a gap between the EL 30 and the upper surface of the upper case 40 are filled with a sealant 80.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-luminous display device suitable for a self-luminous road surface pavement block using EL. In the present application, EL means an EL (electroluminescence) element, a conductive film and glass,
It means the entire surface emitting device composed of a protective film of resin or aluminum.

[0002]

2. Description of the Related Art As such a self-luminous display device, a marker provided at an intersection is known. This marker has an approximately four-sided pyramid shape, a solar cell is provided on the upper surface, an LED is provided on the side surface, and a storage battery for storing electric power from the solar cell inside and an ambient illuminance are below a predetermined value. At this time, a control device for supplying electric power from the storage battery to cause the LED to emit light is housed inside.

[0003]

By the way, since the LED of such a marker has directivity, the recognizable range is limited to a narrow range, and the display surface is limited to an upright or tilted example. It is not suitable for applications such as when laying or burying on the road surface where it is required to be recognized from a range of approximately 180 °.

[0004]

In order to solve the above problems, in a self-luminous display device according to the present application, a solar cell and an EL are arranged on a flat upper surface of a box-shaped case, and power from the solar cell is supplied. And a control device for supplying electric power from the storage battery to cause the EL to emit light when the ambient temperature becomes equal to or lower than a predetermined brightness.

At this time, a transparent plate may be overlaid on the solar cell and the EL, and a sealing material may be filled between the periphery of the transparent plate and the case and between the EL and the upper surface of the case.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment configured as a paving block will be described with reference to FIGS. 1 to 5. FIG.
2 is a cross-sectional view of this block taken along line 1-1 in FIG. 2, FIG. 2 is an overall perspective view of the appearance, FIG. 3 is an exploded perspective view of disassembled components, and FIG. 4 is a diagram showing a planar arrangement of electrical components. FIG. 5 is a block diagram of the control device.

As is apparent from these figures, the block is composed of the transparent plate 10, solar cell 20, EL 30, upper case 4
0 and the lower case 50, and the upper and lower cases are combined to form a storage box 60 in the inner space of the case having a substantially box shape.
And a control device 70 (see FIG. 4).

The transparent plate 10 is made of an appropriate material such as glass and has a thickness having sufficient strength for paving. The solar cell 20 is arranged so as not to interfere with the display of the EL 30, and the EL 30 may be arranged as necessary. It is formed into an appropriate display shape.

In order to obtain the required strength, the upper case 40 and the lower case 50 are made of a suitable rigid material such as aluminum alloy,
In addition, a large number of ribs 41 and 51 are formed in a lattice shape for weight reduction. It should be noted that various reinforcing structures such as a honeycomb shape can be adopted in addition to the lattice shape.

Further, there are formed semicircular arc-shaped recesses 42 and 52 for accommodating the storage battery 60 and accommodating portions 43 and 53 of the control device 70. Further, a code hole 44 for wiring and a recess 54 are formed so as to traverse each rib 41, 51.

A concave portion 45 for accommodating the transparent plate 10, the solar cell 20, and the EL 30 is formed in the upper portion of the upper case 40, and the bottom portion 45a thereof is a flat portion. Further, small recesses 46a and 46b are formed at the corners thereof, and wiring code holes 47a and 47b are formed therethrough.

As is apparent from FIG. 1, E is provided in the recess 45.
L30, the solar cell 20, and the transparent plate 10 are put in this order, and the periphery of the solar cell 20 is covered with the transparent adhesive 21.
And EL30. In the range in which the solar cell 20 is not provided, the transparent adhesive 21 is provided between the transparent plate 10 and the EL 30 by a gap corresponding to the thickness of the solar cell 20.
It is filled with only the layer.

Between the periphery of the transparent plate 10 and the peripheral portion 48 of the upper case 40, a suitable transparent sealing material 8 such as silicon resin is provided.
0 is filled. The sealing material 80 is wrapped around between the EL 30 and the bottom portion 45a of the recess 45 to form a sealing layer 81.

Further, the sealing material 80 has small recesses 46a, 46b.
A filling layer 82 is formed in the inside, and a part of the filling layer 82 is formed in the cord hole 47.
It is a hole seal 83 that also fills the cords 90 and 91 and their surroundings by entering the a and b.

As is apparent from FIG. 4, the cord 92 of the storage battery 60 is connected to the control device 70, and the control device 70 is connected to the solar cell 20 by the cord 90 and the EL 30 by the cord 91.

As is apparent from FIG. 5, the control device 70 is connected to the storage battery 60 via the overdischarge / overcharge prevention circuit 72 for the electric power of the solar battery 20. The electric power of the storage battery 60 is connected to the EL drive circuit 73 through the overdischarge / overcharge prevention circuit 72.

The EL drive circuit 73 is connected to an illuminance detection circuit 71 for detecting the illuminance from the amount of power generated by the solar cell 20 and a timer circuit 74 for driving the EL 30 for a predetermined time, and the inverter is operated under the predetermined conditions determined by these. Circuit 7
The EL 30 is turned on via 5.

A peripheral portion 48 is formed between the upper case 40 and the lower case 50.
And 58 are bolts 9 with packing 95 sandwiched between the joints.
It is liquid-tightly integrated by 6. In addition, concave portions 49 and 59 are formed on the respective peripheral side portions.

Next, the operation of this embodiment will be described. In FIG. 1, the electric power generated by the solar cell 20 is stored in the storage battery 60 during the daytime with the upper surface exposed and buried in the soil 97. When the surroundings reach a certain brightness, such as at night,
The illuminance detection circuit 71 operates and the EL 30 is turned on while the timer circuit 74 is set.

Since the display by the EL 30 can be recognized from a range of about 180 °, it can be sufficiently recognized even if the display surface is horizontally laid or embedded. Therefore, the degree of freedom in setting the display surface is increased.

In addition, the upper case 40 and the lower case 50 are made almost liquid-tight, and the solar cell 20 and E are sealed by the sealing material 80.
Since L30 is liquid-tightly sealed between the transparent plate 10 and the upper case 40, it is possible to obtain sufficient waterproof performance for outdoor use.

Further, the perimeter of the cords 90 and 91 can be sufficiently sealed by the hole seal 83. In addition, since all power supplies are built-in and no external power supply is connected, it is easy to improve waterproof performance in this respect as well.

In addition, as shown in FIG.
0 and the recesses 49 and 59 are formed on the peripheral side portions of the lower case 50 and the lower case 50. Therefore, even when the upper case 40 is buried in the soil 97, only the upper case 40 can be removed in the buried state, thereby improving the maintainability. .

[0024]

In this self-luminous display device, since the solar cell is provided on the flat portion of the upper surface of the case, a sufficient mounting area can be secured, and the solar cell can generate power by the amount of light received in the daytime and can be sufficiently operated. Electric power can be secured. This power is stored in the storage battery,
When the surroundings become less than or equal to the predetermined brightness such as at night, the control device can supply electric power from the storage battery to the EL to cause the EL to emit light.

Since the display by EL can be recognized from a wide range of about 180 °, it can be made a horizontal display surface such as a road surface display.

Furthermore, by filling the sealing material between the periphery of the transparent plate and the case and between the EL and the case upper surface, sufficient waterproof performance can be obtained even in outdoor use.

In addition, since the storage battery and the control device are built in, it is not necessary to connect an external power source, and in this respect also, it becomes easy to secure high waterproof performance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along line 1-1 of FIG. 2 according to an embodiment.

FIG. 2 is a perspective view of an embodiment.

FIG. 3 is an exploded perspective view of the embodiment (in the figure, the upper stage shows the front side of the upper case, the interruption shows the reversed back side, and the lower stage shows the lower case from the upper side, that is, from the side where it is superposed on the upper case). is there.)

FIG. 4 is a plan view of the main part

FIG. 5 is a block diagram of a control device.

[Explanation of symbols]

10: transparent plate, 20: solar cell, 30: EL, 40: upper case, 50: lower case, 60: storage battery, 70: control device, 80: sealing material

Claims (2)

[Claims] 1. A solar cell and an EL are arranged on a flat upper surface of a box-shaped case, and a storage battery for storing electric power from the solar cell and an electric power from the storage battery when the surroundings become less than a predetermined brightness. A self-luminous display device, characterized in that a control device for supplying self-luminous light to cause the EL to self-luminely is housed therein. 2. A transparent plate is placed on the solar cell and the EL, and a sealing material is filled between the periphery of the transparent plate and the case and between the EL and the upper surface of the case.
The self-luminous display device described.