JPH053529Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a road marking device installed around a construction site such as a road construction site at night.

[Conventional technology]

Traditionally, when controlling traffic due to road construction at night, road markings were installed along the perimeter of the construction site to alert drivers to the construction area and to ensure the safety of construction workers. That's what I do. As shown in Japanese Utility Model Application No. 57-205185, road markings used for such purposes have begun to be designed using light-emitting diodes. .

[Problems to be solved by the invention] However, the road markings using the above-mentioned light emitting diodes only emit light in one direction, that is, toward passing vehicles, making it difficult to check from the side of the markings. There was a problem in that it was difficult to early detect a decrease in illuminance due to a voltage drop or the like from behind the indicator.

[Means for solving problems]

The present invention was made in consideration of the above-mentioned conventional problems, and includes at least one light emitting diode arranged on each of the front surface, back surface, and edge side of a printed circuit board, and the printed circuit board is viewed from the front and back directions. A road marking device, characterized in that the road marking device is covered with a pair of lens bodies, the pair of lens bodies sandwich and hold the printed circuit board, and a retroreflective surface portion is provided at a position of the lens body that does not face the light emitting diode. It is intended to solve the problems of the conventional technology.

[Effect]

In this invention, when the light emitting diode located on the side of the edge of the printed circuit board is lit, the light from this light emitting diode passes through the lens body and travels in the lateral direction of the printed circuit board, that is, in the side direction of the indicator. . Furthermore, light from the light emitting diodes disposed on the front and back sides of the printed circuit board also travels in the front and back directions of the printed circuit board, that is, in front and behind the indicator. Furthermore, light that reaches the retroreflective surface from the outside returns to the irradiation side. For example, if the light comes from a car headlamp, the light reaches the driver side and appears to be shining.
It will attract attention.

〔Example〕

Next, the present invention will be explained in detail based on an embodiment shown in FIGS. 1 to 3.

In the figure, reference numeral 1 denotes a road marking device, and the road marking device 1 consists of an indicator light section 2 having a substantially circular shape when viewed from the front, and a power supply section 3 located below the indicator light section 2. Second
As shown in the figure, the indicator light unit 2 has a built-in light emitting diode 4 as a light source, and a plurality of light emitting diodes 4 are arranged on the front surface of a printed circuit board 5 which has printed wiring on both sides, and a light emitting diode 4 is arranged in the center of the back surface. A driving unit 6 includes one light-emitting diode 4 arranged in the drive unit 6 and causes the light-emitting diode to blink in a predetermined pattern.
is provided on the printed circuit board 5.

The printed circuit board 5 having a light source is covered with a pair of lens bodies 7 colored red, for example, from the front and back sides, and the printed circuit board 5 is supported in a sandwiched state between the peripheral edges of the lens bodies 7 that abut against each other. . When the lens bodies 7 are combined, a neck part 70 is formed at the lower end of the lens body 7. After connecting the light emitting diode drive circuit and the power source (for example, a battery) in the power supply part 3 through the inside of the neck part 70, the neck part 7 is
0 is connected to the power supply section 3.

Cutout-shaped edges 50 that are not sandwiched by the lens body 7 are provided on the top, bottom, left and right sides of the printed circuit board 5, and light emitting diodes 4 are arranged on the sides of each edge. Light from the light emitting diode 4 located on the side of the indicator light section 2 travels toward the side surface of the indicator light section 2.

In addition, the lens body 7 that covers the light emitting diode 4 has
A cut surface portion 71 is provided at a position facing the light emitting diode 4, and the direction of light propagation can be controlled by a Fresnel cut or a fisheye cut, and surfaces other than the cut surface 71 are provided with retroreflective cuts. A retroreflective surface section 72 is provided so that the light emitted from the light emitting diode 4 and the reflected light from external light can alert drivers, workers, and the like.

Note that the retroreflective surface portion may be constructed by pasting a reflective tape instead of by cutting the lens body.

[Effect of idea]

As explained above, according to the present invention, at least one light emitting diode is arranged on each of the front surface, the back surface, and the edge side of the printed circuit board, and the printed circuit board is covered with a pair of lens bodies from the front and back directions. , the pair of lens bodies sandwich and hold the printed circuit board, and a retroreflective surface portion is provided at a position of the lens body that does not face the light emitting diode.

This makes it extremely easy to place the printed circuit board at a predetermined position between the lens bodies. Furthermore, the light emitting diodes emit light in the front, rear, and side directions of the indicator, and the light emission can be confirmed not only from the front and back directions of this thin indicator but also from the sides. Furthermore, the lighting status of the road marking device can be checked from the rear, that is, even from the worker's side, and voltage drops and the like can be detected early, making it possible to increase the reliability of the road marking device. Furthermore, since it has a retroreflective surface, when light from a car's headlight hits the indicator, the light is reflected in the direction of the irradiation, and the light also draws attention. It has excellent practical effects, such as the ability to

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of a road marking device according to the present invention, FIG. 2 is an explanatory diagram showing a cross section of an indicator light section in one embodiment, and FIG. 3 is an explanatory diagram showing an indicator light section in one embodiment. FIG. DESCRIPTION OF SYMBOLS 1...Road marking device, 2...Indication lamp part, 4...Light emitting diode, 5...Printed circuit board, 50...Edge, 7...Lens body.

Claims (1)

[Claims for Utility Model Registration] At least one light emitting diode is arranged on each of the front surface, the back surface, and the edge side of a printed circuit board, and this printed circuit board is covered from the front and back directions with a pair of lens bodies, A road marking device, characterized in that a lens body sandwiches and holds the printed circuit board, and a retroreflective surface portion is provided at a position of the lens body that does not face the light emitting diode.