JP2019144888A - Led type traffic signal snow accretion prevention cover - Google Patents

Abstract

To provide an LED type traffic signal snow accretion preventing cover capable of preventing snow accretion on a display unit of an LED type traffic signal light device display unit with low power and enhancing visibility of the display unit.SOLUTION: An LED type traffic signal snow accretion preventing cover 10 is mounted on a display unit 20a of an LED type traffic signal light device 20, comprising: a circular snow accretion prevention cover body 12; a circular elastic member 14 for fixing the snow accretion preventing cover main body 12 by concentrically overlapping it and whose diameter is larger than that of the snow accretion preventing cover body 12; and a cylindrical mounting member 16 for fixing the elastic member 14 and having the same diameter as that of the elastic member 14. A hole 14a concentric with an outer edge of the elastic member 14 having a diameter smaller than that of the snow accretion preventing cover body 12 penetrating the elastic member 14 is provided with the elastic member 14. A vibration generating device 18 for providing impact and vibrating the snow accretion prevention cover body 12 is provided. Thus, snow accretion of the snow accretion preventing cover body 12 is removed with small power, and visibility of the display unit 20a of the LED type traffic signal light device 20 can be secured.SELECTED DRAWING: Figure 1

Description

The present invention relates to an LED traffic signal snow accretion prevention cover that prevents snow from adhering to a display unit of an LED traffic signal lamp.

In recent years, LED traffic signal lamps have been introduced in place of incandescent traffic signal lamps from the viewpoint of energy saving and cost saving. However, in cold regions, the display part of the LED traffic signal lamp cannot be visually recognized due to snowfall, which may cause a traffic trouble or a traffic accident.

In order to solve the above-described problem, a technique for melting snow and ice attached to a display unit of an LED traffic signal lamp with an electric heater is provided (for example, Patent Document 1).

JP 2017-24226 A

The translucent panel with an electric heating body of Patent Document 1 can be used for an LED traffic signal lamp, and includes a translucent body that transmits light emitted from a light source and an electric heating body that generates resistance by energization. It is a translucent panel with an electric heating body formed by stacking, and the electric heating body includes an opening that transmits light. Thereby, it is possible to remove snow / frozen matter on the display unit of the LED traffic signal lamp.

At present, it is considered to reduce the cost by setting the power supplied to the LED traffic signal lamp to 20 W. When the power supplied to the LED traffic signal lamp is 20W, the power supplied is 20W.
Of these, 10 W is used to turn on traffic signals, and it is required to prevent snow on the LED traffic signal lamp display unit with a low power of 10 W (excess power of the LED traffic signal lamp).
The traffic signal lamp provided with the translucent panel with an electric heating body and LED of patent document 1 uses the translucent panel with an electric heating body which covers a display, and prevents the snow-lighting and freezing to a translucent panel. . However, with a small power of 10 W, it was not possible to uncover snow on the translucent panel with the electric heating element, and the power consumption could not be reduced.

The present invention solves the above-described problems, and can prevent snow on the display unit of the LED traffic signal lamp display unit with low power and increase the visibility of the display unit. The purpose is to provide a protective cover.

The LED traffic signal snow accretion prevention cover of the present invention is attached to the display part of the LED traffic signal lamp, and the circular snow accretion prevention cover body and the snow accretion prevention cover body are concentrically overlapped and fixed. A snow-covering prevention cover comprising a circular elastic member having a diameter larger than that of the snow-prevention cover main body and a cylindrical mounting member having the same diameter as the elastic member for fixing the elastic member. A concentric hole is formed in the outer edge of the elastic member having a diameter smaller than that of the main body, and a vibration generator for vibrating the snow accretion prevention cover main body is provided.

The LED traffic signal snow prevention cover of the present invention attaches the snow prevention cover main body to the front of the display part of the LED traffic signal lamp, and vibrates the snow accretion prevention cover main body. To remove it. As a result, it is possible to remove snow and frozen objects from the snow cover with low power and improve the visibility of the display part of the LED traffic signal lamp. Can be prevented.

It is a figure showing the LED type traffic signal snow accretion prevention cover of this invention. It is an assembly drawing of the LED type traffic signal snow accretion prevention cover of FIG. It is a figure showing the state which attached the LED type traffic signal snow accretion prevention cover of FIG. It is a use condition figure of the LED type traffic signal snow accretion prevention cover of FIG. It is a figure showing the elastic member of the LED type traffic signal snow accretion prevention cover of FIG.

According to the present invention, a snow cover is provided on the display unit of the LED traffic signal lamp so as to prevent snow from being deposited on the display unit of the LED traffic signal lamp with low power.

The LED traffic signal snow accretion prevention cover of this invention is demonstrated based on figures. FIG. 1 is a diagram showing an LED traffic signal snow accretion prevention cover according to the present invention. FIG. 2 is an assembly diagram of the LED traffic signal snow accretion prevention cover of FIG. FIG. 3 is a diagram showing a state where the LED traffic signal snow cover is attached as shown in FIG. 1. FIG. 3A is a diagram showing an LED traffic signal lamp with a snow cover. FIG. These are the enlarged views of the display part of the LED type traffic signal lamp of figure (a). FIG. 4 is a use state diagram of the LED traffic signal snow accretion prevention cover of FIG. FIG. 5 shows the LE of FIG.
It is a figure showing the elastic member of D type traffic signal snow accretion prevention cover.
The LED traffic signal snow accretion prevention cover 10 has a circular snow accretion prevention cover main body 12 and a circular elastic elasticity larger in diameter than the snow accretion prevention cover main body 12 which are concentrically overlapped and fixed. A member 14 and a cylindrical mounting member 16 having the same diameter as the elastic member 14 and fixing the elastic member 14 are provided. The elastic member 14 has a circular hole 14 penetrating the elastic member 14.
a is provided. The circular hole 14 a is formed to be smaller in diameter than the snow accretion prevention cover body 12, and is a concentric hole with the outer edge 14 b of the elastic member 14. The snow accretion prevention cover main body 12 is provided with a vibration generator 18 that applies an impact to the snow accretion prevention cover main body 12 to vibrate the snow accretion prevention cover main body 12.

The snow accretion prevention cover body 12 is made of a transparent material having high impact resistance (for example, polycarbonate, acrylic, etc.) that can transmit the light of the LED traffic signal lamp 20, and is formed on a circular thin flat plate. Is. The snow accretion prevention cover main body 12 is formed smaller than the diameter (outer diameter) of the elastic member 14 and the diameter of the mounting member 16.

The elastic member 14 is made of an elastic body such as rubber, and is formed on a thin circular plate having a larger diameter than the snow accretion prevention cover main body 12. The elastic member 14 is provided with a hole 14 a concentric with the outer edge 14 b of the elastic member 14 that penetrates the elastic member 14, and the hole 14 a is formed with a diameter smaller than that of the snow accretion prevention cover main body 12. That is, the snow accretion prevention cover main body 12 is concentrically overlapped and fixed to the elastic member 14, so that the snow accretion prevention cover main body 12 is fixed.
Is joined between the outer edge 14b and the inner edge 14c of the elastic member 14 (FIG. 5).

The attachment member 16 is a cylindrical member having the same diameter as the elastic member 14. The elastic member 14 is fixed so as to overlap the opening 16 a of the mounting member 16. The opening 16a of the mounting member 16 is
It is covered with a snow accretion prevention cover body 12 and an elastic member 14.
The LED traffic signal snow accretion prevention cover 10 is assembled by concentrically fixing the snow accretion prevention cover body 12 and the elastic member 14 to the attachment member 16 (FIGS. 1 and 2).
). In addition, the elastic member 14 shall fix the outer edge 14b of the elastic member 14 to the opening part 16a of the attachment member 16. FIG.
Further, the attachment member 16 can be attached to the outer edge of the display portion 20a of the LED traffic signal lamp 20 through another opening 16b to which the elastic member 14 is not attached and fixed. The traffic signal snow accretion prevention cover 10 is attached so as to cover the display portion 20a of the LED traffic signal lamp 20 (FIGS. 1 and 3).

The snow accretion prevention cover main body 12 is provided with a vibration generator 18 that applies an impact to the snow accretion prevention cover main body 12 to vibrate the snow accretion prevention cover main body 12 (FIG. 1). The vibration generator 18 of FIG. 1 is provided with a rod-shaped protrusion 18a that gives an impact to the snow accretion prevention cover body 12. The protrusion 18a of the vibration generator 18 applies an outward force F to the snow accretion prevention cover body 12 instantaneously and continuously (FIG. 4).
When the vibration generating device 18 is operated, the protrusion 18a of the vibration generating device 18 gives an impact to the snow accretion prevention cover main body 12, and the snow accretion prevention cover main body 12 is instantaneously distorted. The returning operation is repeated (FIGS. 1 and 4). The snow accretion prevention cover body 12 vibrates in response to the impact of the projection 18a of the vibration generator 18, while the snow prevention cover body 1 receives the impact / vibration.
The snow accretion / frozen material 22 adhering to 2 is removed from the snow accretion prevention cover body 12.
When the power supplied to the LED traffic signal lamp 20 is 20 W, the vibration generator 18
Includes a solenoid operating at less than 10 W (movable iron core in the solenoid (bar-shaped protrusion 18a).
) And a voice coil motor equipped with an output shaft can be used. By using a device such as a solenoid or a voice coil motor and a control device, it is possible to apply shock and vibration to the snow accretion prevention cover body 12 instantaneously and continuously with a small electric power (less than 10 W).
Thereby, it is possible to remove the snow / frozen material 22 of the snow accretion prevention cover main body 12 with low power, and to ensure the visibility of the display portion 20a of the LED traffic signal lamp 20.
In addition, when giving an impact / vibration to the snow accretion prevention cover body 12 instantaneously and continuously, the protrusion 18a (iron core or output shaft) of the vibration generator 18 is reciprocated by being displaced by a predetermined distance ( 1 and 4).

In FIG. 1, a holding member 24 that holds the vibration generator 18 in the snow accretion prevention cover main body 12 is provided inside the attachment member 16.
Moreover, in FIG. 1, although the vibration generator 18 is provided in the center of the snow accretion prevention cover main body 12, it is not limited to this. The vibration generator 18 is provided at a position where sufficient impact / vibration is applied to the snow accretion prevention cover main body 12.
Further, the vibration generator 18 and the holding member 24 are connected to the display unit 20 of the LED traffic signal lamp 20.
A configuration that does not affect the visual recognition of a shall be used.

The snow accretion prevention cover main body 12 is joined between the outer edge 14b and the inner edge 14c of the elastic member 14 (FIG. 5A). The elastic member 14 connects the snow accretion prevention cover body 12 and the attachment member 16, and the snow accretion prevention cover body 12 is not directly fixed to the attachment member 16. Therefore, the impact / vibration of the snow-prevention cover main body 12 reaches the elastic member 14, and the outer edge portion 12a of the snow-prevention cover main body 12 also vibrates due to the elasticity of the elastic member 14 (FIG. 5B). Thereby, the impact / vibration of the snow accretion prevention cover main body 12 can be applied to the entire snow accretion prevention cover main body 12 and the snow accretion / frozen material 22 adhering to the entire surface of the snow accretion prevention cover main body 12 can be removed. LED
The visibility of the display unit 20a of the traffic light device 20 can be enhanced.

(Test example)
The LED traffic signal snow cover 1 shown in FIG.
0 was attached, and a snow removal / frozen material 22 removal test due to impact / vibration of the snow cover 8 was performed.
In the opening 16a of the mounting member 16 (stainless steel, outer diameter 314 mm, inner diameter 304 mm, height 70 mm), the elastic member 14 (made of urethane foam, outer diameter 310 mm, inner diameter 285 mm,
A thickness of 5 mm) was attached and fixed, and a snow accretion prevention cover body 12 (made of polycarbonate, diameter 300 mm, thickness 0.2 mm) was attached and fixed to the elastic member 14 concentrically.
A voice coil motor (manufactured by Shindengen Mechatronics, MM30C-
284 VCM). The output shaft of the voice coil motor was placed in the center of the snow accretion prevention cover main body 12, and a test for removing snow accretion / frozen material 22 was performed. The voice coil motor was operated at a frequency of about 50 Hz. The output shaft 18a was reciprocated at a displacement of 6 mm.
(Result of removal test)
The power consumption during the operation of the vibration generator 18 was less than 10W. In addition, it was found that the snow / frozen material 22 attached to the snow-prevention cover main body 12 can be removed to such an extent that the display unit 20a of the LED traffic signal lamp 20 can be sufficiently visually recognized.
In this test, a voice coil motor was used as the vibration generating device 18, but it was intended to vibrate the main body by applying an impact to the snow accretion prevention cover main body 12, and the display unit of the LED traffic signal lamp 20. Other means may be used as long as it does not affect the visual recognition of 20a.

As described above, according to the LED traffic signal snow accretion prevention cover of the present invention, snow can be prevented over the entire surface of the display unit only by the surplus power of the LED traffic signal lamp. Also,
Since the visibility of the signal light can be ensured or enhanced, it is possible to prevent the occurrence of traffic troubles and traffic accidents in cold regions.

DESCRIPTION OF SYMBOLS 10 LED type traffic signal snow accretion prevention cover 12 Snow accretion prevention cover main body 14 Elastic member 14a Hole 14b Outer edge 16 Mounting member 18 Vibration generator 20 LED type traffic signal lamp 20a Display part

Claims (1)

Attached to the display part of the LED traffic signal lamp, a circular snow accretion prevention cover body,
A circular elastic member having a diameter larger than that of the anti-snow cover main body, and a cylindrical mounting member having the same diameter as that of the elastic member. LED type, characterized in that a concentric hole is provided in the outer edge of the elastic member having a smaller diameter than the snow accretion prevention cover main body penetrating the elastic member, and a vibration generating device for vibrating the snow accretion prevention cover main body is provided. Traffic signal snow cover.