JP2006202114A - Snow protection cover for traffic signal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow protection cover for a traffic signal, which can be used with the snow protection countermeasures of the existing traffic signal without increasing the manufacturing process of the traffic signal. <P>SOLUTION: The snow protection cover 1 for the traffic signal is the cover for the traffic signal having a signal light B which includes: a lens D for covering a light source C; and a hood E arranged by extending forward from the outer peripheral upper part of the lens D. The cover 1 includes: a cylindrical body 2 which has an inner periphery being substantially the same in shape as the outer periphery of the signal light B, is removably fitted from the front of the signal light B, and is fixed to the traffic signal A; and a transparent snow protection board 3 for covering a front opening part 2a of the cylindrical body 2 and whose front surface is inclined backward in the lower part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a snow cover for a traffic light that enables a lighting color of a traffic light having a signal lamp including a lens that covers a light source and a hood provided to extend forward from an upper peripheral portion of the lens to be surely seen even during snowfall.

  Traffic lights such as traffic lights and traffic lights for railway vehicles usually have a signal lamp provided with a lens that covers the light source and a hood that extends forward from the upper outer periphery of the lens. Snow often attaches. Conventionally, incandescent bulbs have been mainly used as light sources for signal lamps, so that the light source itself has become a heat source to melt the snow adhering to the lens surface, so that there is little residual snow. Therefore, there is little problem that snow gradually accumulates on the lens surface of the signal lamp and the entire lens surface is covered with snow and the lighting color cannot be visually recognized.

  In recent years, energy-saving light emitting diodes (LEDs) have been used as light sources for signal lamps. However, since this LED has a remarkably low calorific value, it is not possible to melt the snow attached to the lens surface of the signal light like an incandescent bulb, and the lens surface is covered with snow and the lighting color cannot be visually recognized. There is a risk of problems.

Therefore, in order to prevent snow from adhering, a display device in which a water-repellent paint is applied to the surface of the display or the surface of the hood of the display has been proposed (see Patent Document 1).
JP-A-10-255195

  However, the display device proposed above requires a step of applying a water-repellent paint to the surface of the display device or the surface of the hood, which increases the number of manufacturing steps of the display device. In addition, there is a disadvantage that it is not possible to cope with snow protection measures of existing traffic lights.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a snow cover for a traffic signal that does not increase the manufacturing process of the traffic signal and can cope with a snow protection measure for an existing traffic signal.

  In order to solve the above-mentioned problem, a snow cover for a traffic light according to claim 1 is a cover for a traffic light having a signal lamp including a lens that covers a light source and a hood that extends forward from an upper outer periphery of the lens. A cylindrical body that has an inner circumference that is substantially the same shape as the outer periphery of the signal lamp, is detachably fitted from the front of the signal lamp, and is fixed to the traffic light; and a front opening of the cylindrical body is provided. And a transparent snow-proof plate arranged to be inclined rearward as the front surface goes downward.

  The snow cover for traffic signal according to claim 2 is characterized in that, in addition to the structure according to claim 1, the cylindrical body is fixed to the traffic signal with a magnet.

  The snow cover for traffic signal according to claim 3, in addition to the configuration according to claim 2, the magnet is attached to a rear surface of a flange provided at a rear portion of the cylindrical body, and the rear end surface of the magnet and the The rear opening surface of the cylindrical body is located on substantially the same plane.

  The snow cover for traffic light according to claim 4 is characterized in that, in addition to the structure according to any one of claims 1 to 3, a hole is formed in a lower front end portion of the cylindrical body. To do.

  Since the snow cover for traffic signal of the present invention is manufactured separately from the traffic signal, it does not increase the manufacturing process of the traffic signal and can cope with the snow protection measures of the existing traffic signal. In addition, the snow cover for traffic signals of the present invention can be easily attached and detached according to the snowfall situation, season, etc., and can be diverted if the shape of the target signal lamp is almost the same. It is.

  Hereinafter, although the snow cover for traffic signals of this invention is demonstrated referring drawings, this invention is not limited only to what was described below.

  1 is an external perspective view of a traffic light snow cover 1 according to an embodiment of the present invention, FIG. 2 is a front view of the traffic light snow cover 1, and FIG. 3 is a rear view of the traffic light snow cover 1. FIG. 4 is an external perspective view showing a method of attaching the traffic light snow cover 1 to the traffic light A, and FIG. 5 is a longitudinal sectional view showing a state where the traffic light snow cover 1 is attached to the traffic light A. . As shown in these figures, the snow cover 1 for a traffic light is provided with a lens D covering the light source C and extending forward from the upper periphery of the lens D to prevent sunlight from directly entering the lens D. This cover is used for a traffic light A having a signal lamp B provided with a hood E to be provided, and includes a cylindrical body 2 and a snow protection plate 3.

  In the present embodiment, the shape of the inner periphery of the cylindrical body 2 is substantially circular. As shown in FIG. 4, the outer peripheral shape of the signal lamp B is substantially circular due to the substantially circular lens D and the hood E that extends forward from the outer peripheral upper portion of the lens D to form a semi-cylindrical surface. This is to correspond to. Thus, the inner periphery of the cylindrical body is configured to have substantially the same shape as the outer periphery of the signal lamp B. Here, “substantially the same shape” means that the shape of the outer periphery of the signal lamp and the shape of the inner periphery of the cylindrical body are substantially the same so that the cylindrical body can be detachably fitted from the front of the signal lamp. Say.

  Further, the length of the upper end of the cylindrical body 2 in the front-rear direction is longer than the length of the hood E in the front-rear direction so that a space is formed between the front end of the hood E and the cylindrical body 2 as shown in FIG. Slightly longer configured. As described above, the length of the upper end of the cylindrical body in the front-rear direction is appropriately set according to the shape of the hood and the extension.

  The front opening 2a of the cylindrical body 2 has a shape that inclines backward as it goes downward. And the transparent snow-protection board 3 which covers this front opening part 2a is provided in the front opening part 2a via the adhesive agent. The snowproof plate 3 has an oval shape corresponding to the inner circumference of the cylindrical body 2 being substantially circular.

  As shown in FIG. 5, since the signal lamp B is almost completely covered with the traffic signal snow cover 1 having the above-described configuration, the snow adheres to the surface of the lens D regardless of the direction from which the snow is blown. There is no. In addition, since the snow protection plate 3 is provided at an inclination, it is possible to reduce or prevent the snow from adhering to the snow protection plate 3, and the attached snow also slides down. Therefore, there is no possibility that the lighting color of the signal lamp B cannot be visually recognized during snowfall. In addition, when light is irradiated from the upper direction of the signal lamp B, light is not directly incident on the lens D by the hood E, but when light is irradiated from the lateral direction and the lower direction, the light is directly applied to the lens D. Incident light may illuminate the lens D and make it difficult to visually recognize the lighting color. However, by covering the signal lamp B with the traffic light snow cover 1, there is no inconvenience that the cylindrical body 2 blocks light from the lateral direction and the downward direction, and the lens D shines and makes it difficult to visually recognize the lighting color.

  The inclination angle of the front opening 2a of the cylindrical body 2 is preferably 40 to 60 ° with respect to the center of the cylindrical body 2, and more preferably 45 to 55 °. By setting within the above range, it is possible to efficiently reduce and prevent the adhesion of snow to the snow protection plate 3, and the attached snow is more easily slipped off.

  Moreover, as a material of the transparent snow-protection board 3, polyester resins, such as a polyethylene terephthalate, an acrylic resin, etc. can be used. Moreover, it is preferable that the surface of the snow-prevention board 3 is subjected to water repellent treatment from the viewpoint of more reliably reducing and preventing snow on the snow-prevention board 3 and further water adhesion. Examples of the processing method include a method of applying a water-repellent paint to the surface of the snowproof plate 3.

  In addition, in the present Example, although the cylindrical body 2 and the snow-protection board 3 are made into a separate member, both may be formed integrally.

  A hole 4 is formed in the lower front end of the cylindrical body 2. Thus, by forming the hole 4, the water entering the inside of the tubular body 2 is discharged with the traffic light snow cover 1 attached to the traffic light A. It is possible to prevent the lighting color from becoming difficult to visually recognize.

  Further, a substantially circular flange 5 is provided at the rear portion of the cylindrical body 2, and the rear end surfaces of the magnets 6, 6, 6 and the rear opening surface of the cylindrical body 2 are on substantially the same plane on the rear surface of the flange 5. Magnets 6, 6 and 6 are attached at equal intervals so as to be positioned. As shown in FIG. 5, the cylindrical body 2 is fixed to the traffic light A via magnets 6, 6 and 6. In the present embodiment, the signal device A is not provided with a member such as a stopper, and further, from the viewpoint of more easily attaching and detaching the signal device snow cover 1 to the signal device A, to the signal device A of the tubular body 2. Although a magnet is used as the fixing means, the fixing means is not limited to a magnet, and screws or the like may be used.

  As shown in FIG. 4, the traffic light snow cover 1 is attached so that the snow plate 3 faces downward while the hood E is inserted from the rear opening of the tubular body 2 into the inside from the front of the signal light B. And the magnets 6, 6 and 6 are attracted to the traffic light A. On the other hand, when removing the snow cover 1 for the traffic light from the signal lamp A, it is only necessary to pull the cylindrical body 2 forward, but by removing the magnets 6 one by one while tilting the cylindrical body 2 up and down, left and right, less force is required. Thus, the snow cover 1 for traffic lights can be removed. In this manner, the traffic light snow cover 1 can be attached and detached by a simple operation.

  As described above, since the snow cover for a traffic light of the present invention is manufactured separately from the traffic light, it does not increase the manufacturing process of the traffic light and can cope with the snow protection measures for the existing traffic light. In addition, the snow cover for traffic signals of the present invention can be easily attached and detached according to the snowfall situation, season, etc., and can be diverted if the shape of the target signal lamp is almost the same. It is.

It is an external appearance perspective view of the snow cover for traffic signals which shows one Example of this invention. It is a front view of the snow cover for traffic signals shown in FIG. It is a rear view of the snow cover for traffic signals shown in FIG. It is an external appearance perspective view which shows the attachment method to the traffic signal of the snow cover for traffic signals shown in FIG. It is a longitudinal cross-sectional view which shows the state by which the snow cover for traffic signals shown in FIG. 1 was attached to the traffic signal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow cover for traffic lights 2 Cylindrical body 3 Snow guard plate 4 Hole 5 Flange 6 Magnet A Traffic light B Signal light C Light source D Lens E Hood

Claims (4)

A cover for a traffic light having a signal lamp that includes a lens that covers a light source and a hood that extends forward from an outer peripheral upper portion of the lens,
A cylindrical body having an inner periphery of substantially the same shape as the outer periphery of the signal lamp, detachably fitted from the front of the signal lamp, and fixed to the traffic light;
A snow cover for a traffic signal, comprising: a transparent snow cover that covers the front opening of the cylindrical body and is inclined rearward as the front surface goes downward.   The snow cover for a traffic signal according to claim 1, wherein the cylindrical body is fixed to the traffic signal with a magnet.   The magnet is attached to a rear surface of a flange provided at a rear portion of the cylindrical body, and a rear end surface of the magnet and a rear opening surface of the cylindrical body are located on substantially the same plane. Snow cover for traffic lights as described in 1.   The snow cover for a traffic light according to any one of claims 1 to 3, wherein a hole is formed in a lower front end portion of the cylindrical body.

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