JP2516299Y2 - Light emitting device for guardrail - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guardrail light-emitting device that can be attached to a guardrail.

[0002]

2. Description of the Related Art Conventionally, an indicator device for indicating the presence of a guardrail, a light emitting device, etc. are provided separately from the guardrail. For example, when a pole having a light emitter is installed, a hole for the pole is formed on the road. Construction work was required.

[0003]

However, according to the above method, an extra place for installing a guardrail indicating device, a light emitting device, etc. on the road in addition to the guardrail is required and the construction is troublesome. The cost was high.

Although it is conceivable to attach road studs or the like to the guardrail itself, a conventional road stud has a storage battery 21 and an LED 22 in the main body, as shown in FIG. 7, for example.
The solar cell module 24 in which a plurality of solar cells 23 are modularized and the control circuit 25 are individually incorporated. Therefore, the assembling work is increased, and the road stud itself becomes large, so that it cannot be attached to the guardrail as it is. .

Further, there is a problem in that the productivity is poor, the cost is high, and the reliability is poor due to the large number of parts.
Incidentally, reference numeral 26 in the drawing is a reflector.

In view of the above problems, an object of the present invention is to provide a highly reliable light emitting device for a guardrail which is attached to the guardrail itself.

[0007]

In order to achieve the above-mentioned object, the present invention provides a solar cell and an LE using the solar cell as a power source.
A D chip, a storage battery charged by the solar cell, and a control circuit component for controlling the blinking operation of the LED chip are mounted on a substrate installed in an elongated case, and the LED chip is mounted on the substrate. A convex reflecting frame is integrally formed so as to be sandwiched, a reflecting plate for reflecting light from the LED chip in the longitudinal direction of the case is provided in the case, and the reflecting plate is provided at an end portion in the longitudinal direction of the case. LE from
It is characterized in that a reflector for guiding the reflected light of the D chip to the outside is provided.

[0008]

As described above, the light emitting device for the guardrail according to the present invention has the elongated case and the reflector for guiding the reflected light of the LED chip to the outside at the end portion in the longitudinal direction. In the installed state, it can be easily and clearly seen by the driver of the car,
It has a great effect on traffic safety.

Further, since the solar cell is used as the power source, there is no limitation on the mounting location, and the trouble of exchanging the power source (battery) is unnecessary.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS.

1A and 1B are a side view and a plan view, respectively, of a light emitting device for a guardrail according to this embodiment.
FIG. 2 is a longitudinal sectional view of the light emitting device for the guardrail, and FIG.
4 and FIG. 4 are a vertical sectional view and a cross-sectional plan view of an LED chip of a light emitting device for a guardrail according to the present embodiment, and FIGS. 5 and 6 are a block diagram and a circuit diagram of the light emitting device for a guardrail according to the present embodiment, respectively. .

The light emitting device for a guardrail according to this embodiment has a flat and oval case 30 as shown in FIGS. 1 (a) and 1 (b). Case 30 is top cover 3
1 and the lower cover 32. This case 3
The solar cell 1 is arranged on the upper surface side of 0, and the transparent resin cover 2 that covers the solar cell 1 is provided.

Further, there are light emitting portions, which will be described later, at both ends in the longitudinal direction, which are covered with reflectors 3, and mounting bolts 4 for mounting the guard rails are provided on the bottom surface. The top surface of the light emitting device for a guardrail has a curved surface shape that can reduce the impact such as a vehicle contact, and the bottom surface is a flat surface so as to surely contact the guardrail.

Next, the internal structure of the light emitting device for the guardrail of this embodiment will be described with reference to FIGS.

As shown in FIGS. 2 to 4, the upper cover 31 and the lower cover 32 of the case 30 of the light emitting device for the guardrail are shown.
Are fixed by screws 33. The bolt 4 for attaching to the guard rail is formed integrally with the lower cover 32.

Further, a conductor pattern 6 having a predetermined shape is formed on the substrate 34 so as to include a resistance component which substitutes for the current limiting resistor, and the LED chip 7, the control circuit component 8, and a solar cell which serves as a power source of the device. Wear a predetermined number of 1.

Further, the LED chip 7 and the portion of the solar cell 1 are covered with a transparent resin 9 so as to have a lens function, and the transparent resin cover 2 which is robustly formed on the upper surface of the solar cell 1 by a transparent polycarbonate resin or the like. Is attached. The substrate 34 is screwed to the upper cover 31 with screws 35. Further, the reflector 10 is attached to the front surface of the LED chip 7, and the reflector 3 is attached to the front surface of the reflector 10 with an adhesive. Here, the reflector 10 is formed by vacuum-depositing Al on the inner surface of the upper cover 31. Also L
A reflective frame 5 for preventing light diffusion in the lateral direction of the LED chip 7 is integrally formed on the substrate 34 so as to sandwich the ED chip 7.

With the structure as described above, the LED chip 7
The reflector 3 reflects the light emitted from the reflector 3
Illuminate the front from.

In the figure, reference numeral 11 is a storage battery for charging the electric power of the solar cell 1.

The circuit configuration and circuit operation of the guardrail light-emitting device of the present invention will be described below with reference to FIGS.

In FIG. 5, 1 is a solar cell, 12 is a backflow prevention diode, 13 is an overcharge prevention circuit, 14 is an illuminance detection circuit, 15 is a switch circuit, 11 is a storage battery, 16 is a blinking circuit, 7 is an LED chip, Reference numeral 17 is a diode.

The solar cell 1 receives the sunlight and generates electric power. The backflow prevention diode 12 prevents a current from flowing from the storage battery 11 to the solar cell 1 at night. The overcharge prevention circuit 13 prevents the overcharge of the storage battery 11 by internally consuming the electric power generated by the solar cell 1 when the voltage of the storage battery 11 becomes equal to or higher than a set value during charging.

The illuminance detection circuit 14 receives the output of the solar cell 1 and detects the brightness on the road, that is, whether it is daytime or nighttime. Upon receiving the signal from the illuminance detection circuit 14, the switch circuit 15 is turned on during the night and turned off during the day.
The storage battery 11 is charged by the electric power generated by the solar cell 1 in the daytime, and supplies electric power for emitting light to the LED 7 at night.
The blinking circuit 16 drives the LED 7 to blink. The diode 17 acts to keep the voltage of the solar cell 1 higher than the operating voltage of the illuminance detection circuit 14 so that the illuminance detection circuit 14 does not operate even if the overcharge prevention circuit 13 operates.

The operation will be described below.

In the daytime, the solar cell 1 generates electric power, the storage battery 11 is charged, and at the same time, it is supplied to the overcharge prevention circuit 13 and the illuminance detection circuit 14. The illuminance detection circuit 14 gives a signal indicating that it is daytime to the switch circuit 15, and the switch circuit 15 is turned off. Therefore, the blinking circuit 1
No power is supplied to LED 6, and LED 7 does not emit light. At night, the illuminance detection circuit 14 gives a signal indicating that it is night to the switch circuit 15, and the switch circuit 15 is turned on. When the switch circuit 15 is turned on, the storage battery 11
Is supplied to the blinking circuit 16 and the LED 7 is driven to blink. At dawn, the switch circuit 15 is turned off by the detection signal from the illuminance detection circuit 14, and the blinking circuit 16
The power supply to the

FIG. 6 shows a detailed circuit configuration.
And the common code is attached. The blinking circuit 16 includes a transistor TR according to a time constant determined by the capacitor C1 and the resistor R8 and the capacitor C2 and the resistor R9.
7 and TR4 are alternately turned on / off to turn on the transistor TR6.
Is turned on intermittently. By turning on and off the transistor TR6, a current intermittently flows from the storage battery 6 to the LED 7, and the LED 7 blinks. In the illuminance detection circuit 14, a signal obtained by dividing the output voltage of the solar cell 1 by the resistors R4 and R5 is given to the base of the transistor TR2, and the transistor TR2 changes the output voltage of the solar cell 1 depending on whether the output voltage is high or low, that is, daytime and nighttime. Turn on and off. By turning on / off the transistor TR2, the transistor TR3 of the switch circuit 15 is turned on / off, and the operation of the blinking circuit 16 is stopped in the daytime.
The blinking circuit 16 is operated at night.

When the voltage of the storage battery 11 exceeds a set value, the overcharge prevention circuit 13 consumes the power generated by the solar cell 1 by the diodes D1 and D2 and the transistor TR1 to prevent the overcharge of the storage battery 6.

As described above, according to the present invention, it is possible to realize a light emitting device for a guardrail which has an elongated case and emits light from the end in the longitudinal direction. The present light emitting device for a guardrail can be easily and surely viewed by a driver such as an automobile on the road in a state where the light emitting device for a guardrail is attached along a road guardrail, so that a great effect on traffic safety can be obtained.

Further, since the solar cell is used as the power source of the LED chip, there is no limitation on the mounting location, and there is no need to replace the power source (battery).

[0030]

As described above, according to the present invention, a light emitting device for a guardrail which can be easily and surely viewed by a driver of an automobile on the road can be realized, and a great effect on traffic safety can be obtained.

Further, since the light source is a solar cell, there is no limitation on the mounting location, and there is no need for battery replacement or the like.

[Brief description of drawings]

1A and 1B are a side view and a plan view, respectively, of a light emitting device for a guardrail according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a light emitting device for a guardrail according to an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of an LED chip of a light emitting device for a guardrail according to an embodiment of the present invention.

FIG. 4 is a cross-sectional plan view of an LED chip of a light emitting device for a guardrail according to an embodiment of the present invention.

FIG. 5 is a block diagram of a light emitting device for a guardrail according to an embodiment of the present invention.

FIG. 6 is a circuit diagram of a light emitting device for a guardrail according to an embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view of a road tack according to a conventional example.

[Explanation of symbols]

 1 Solar Cell 3 Reflector 5 Reflective Frame 7 LED Chip 8 Control Circuit Parts 10 Reflector 11 Storage Battery 30 Case 34 Substrate

Claims (1)

(57) [Scope of utility model registration request] 1. A solar cell and L using the solar cell as a power source.
An ED chip, a storage battery charged by the solar cell, and a control circuit component that controls the blinking operation of the LED chip are mounted on a substrate installed in an elongated case, and the LED chip is mounted on the substrate. A convex reflection frame is integrally formed so as to be sandwiched, and a reflection plate that reflects light from the LED chip in the case longitudinal direction is provided in the case, and the reflection plate is provided at a longitudinal end portion of the case. A light emitting device for a guard rail, characterized in that a reflector for guiding reflected light of the LED chip from the outside to the outside is provided.