JP2003173496A - Antireflection plate for signal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a signal of which the lighting can be clearly detected by preventing a reflection by a signal light, since the reflection and a pseudo lighting by the signal light of a traffic signal due to direct sunlight in mornings or evenings cause not only drivers but also pedestrians to falsely recognize and thus increase a possibility of a traffic accident. <P>SOLUTION: To block the direct sunlight entering the signal light of the traffic signal and thus prevent a reflection, antireflection inclined planes to which nonreflective painting is applied and transmission inclined planes passing the light of the traffic signal are combined in a mountain shape to form an antireflection plate arranged in a row in elongated stripe-like forms parallel to one another. The antireflection plate is attached to the front surface of the signal light to prevent a pseudo lighting. Silver mirror painting is applied to the back surface of the antireflection inclined plane for effective irradiation of the light. The antireflection inclined plane is inclined at nearly an elevation angle of a person looking at the signal so that the non- transmission plane does not interfere with the person confirming the signal. Two kinds of the transmission inclined planes are selectively used according to applications: one is formed with thin oblong transparent semicolumnar surfaces arranged in stripe- like forms to diffuse and irradiate the light and the other is formed with oblong transparent inclined surfaces. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic signal.

[0002]

2. Description of the Related Art Conventional traffic signals, both for automobiles and for pedestrians, have signal lamps provided with eaves for reducing the incidence of direct sunlight and for avoiding rain and snow.
It was not an effective measure to prevent the reflection of direct sunlight at low angles in the morning and evening.

[0003]

The reflection of the signal light in the morning and evening on a clear day may cause a traffic accident by misidentifying the signal. Especially, the strong reflection of the direct sunlight of the eastward or westward signal light is caused only by the driver. Not only that, pedestrians cannot identify the lighting, which is a very troublesome problem.

At a time when the illuminating angle of sunlight is low in the morning and evening, the traffic light receives direct sunlight and is reflected, and the signal cannot be confirmed because the light reflected by the lens surface of the signal lamp and the reflector inside the signal lamp that passes through the lens. This is because the light reflected from the outside and passing through the color marking plate is combined, and the signal light appears to shine brightly. It is an object of the present invention to provide a traffic light in which the lighting of a signal light can be clearly confirmed by eliminating the pseudo lighting by these two lights.

[0005]

SUMMARY OF THE INVENTION In order to solve these problems, the present invention provides an elongated antireflection coating which prevents reflection of direct sunlight and which is coated with a non-reflective coating for blocking the direct sunlight incident on a signal light. The slanted surface and the slender transmission slanted surface that passes the light of the signal lamp are combined in a mountain shape to form an antireflection plate in which the horizontally long surface protruding forward is arranged in parallel in a streak pattern.

The slender anti-reflection inclined surface of the anti-reflection plate is inclined at an angle close to the elevation angle in the direction of the line of sight of a person looking up at the signal so that the impermeable surface looks like a narrow horizontal line, which hinders signal confirmation. Try not to be.

The transparent inclined surface of the antireflection plate for a traffic signal for vehicles is provided with a horizontally elongated, semitransparent semicylindrical surface in a streak shape in order to diffuse the light emitted from the signal lamp and facilitate the confirmation of the signal. .

The transparent inclined surface of the antireflection plate for the traffic light for pedestrians is a horizontally long transparent inclined surface so that the pattern of the color marking plate can be seen.

Since the antireflection plate constructed as described above is attached to the front surface of the signal light by using the frame, it can be easily attached to the existing signal light for modification.

[0010]

EXAMPLES Examples will be described with reference to the drawings. As shown in FIG. 3 and FIG. 4, a narrow and horizontally long anti-reflective inclined surface (4) that prevents reflection of the direct sunlight (7) and blocks the incident direct sunlight (7), and a thin and horizontally long transmission that transmits the light of the signal lamp. The anti-reflection plate (3) is formed by combining the inclined surfaces (5) in a chevron shape and arranging the surfaces projecting forward in parallel in a streak pattern, and molding them using a material such as plastic according to the shape of the front surface of the signal light. ).

A non-reflective coating is applied to the front surface of the antireflection inclined surface (4), and a silver mirror coating is applied to the back surface so as to reflect the lamp light (6) to enhance the lighting effect. In addition, as shown in FIGS. 1 and 6, the antireflection inclined surface (4) is inclined at an angle of about 30 ° which is close to an elevation angle of 20 ° to 45 ° in the direction of the line of sight (8) of the person looking up at the signal. When looking up at the signal light, make it look like a narrow horizontal line so that it does not interfere with signal confirmation.

As shown in FIG. 3, the transmission inclined surface (5) of the anti-reflection plate (3) for a vehicular traffic signal has a lateral side in order to diffuse the lamp light (6) emitted from the signal lamp to facilitate confirmation of the signal. Attach a slender, transparent, semi-cylindrical surface to.

The light (6) emitted from the signal light includes direct light from the lamp and light reflected by the reflecting mirror (1). In the signal light of the vehicular traffic light, as shown in FIG. 2, the color indicator plate (2) is used. )
Light rays (6a, 6b, 6c, 6d) that are refracted and diffused by the semi-cylindrical surface of the transmission inclined surface (5) into the antireflection plate (3) through the color indicator plate (2). There is a light ray (6e, 6f) which is reflected by the silver mirror surface behind the antireflection inclined surface (4) and then refracted and diffused by the semi-cylindrical surface. Therefore, the light (6) is efficiently diffused and emitted,
Even if the elevation angle at which the traffic light (10) looks like a driver changes, the signal can be easily confirmed.

In the pedestrian traffic light, as shown in FIG. 4, the transparent inclined surface (5) of the antireflection plate (3) is a horizontally long transparent inclined surface so that the pattern of the color indicating plate (2) can be seen. The anti-reflection inclined surface (4) has a non-reflective coating on the front surface and a silver mirror coating on the back surface so as to reflect the light (6) to enhance the light effect. Can be radiated efficiently.

Antireflection plate (3) constructed as described above
Is attached to the front surface of each signal light with a frame (9) as shown in FIG.

[0016]

Since the antireflection plate of the present invention is constructed as described above, it has the following effects.

In addition to preventing the reflection of intense direct sunlight from the signal light at a time when the irradiation angle is low in the morning and evening by 60% or more,
Since the direct sunlight is blocked, it is possible to clearly confirm the lighting of the signal lamp by eliminating the pseudo lighting due to the reflected light and the light reflected by the reflector of the signal lamp and going out through the color indicator board.

Since the surface of the antireflection inclined surface of the antireflection plate is coated with a non-reflective material to absorb direct sunlight, and the rear surface is coated with a silver mirror so as to reflect light, the lighting effect is enhanced. Also, since the inclination angle of the anti-reflection inclined surface is inclined at an angle close to the elevation angle in the line-of-sight direction of the person looking up at the signal, looking up at the signal light makes it appear as a narrow horizontal line and does not interfere with signal confirmation. .

The transmission inclined surface of the anti-reflection plate for the traffic signal for vehicles has a slender and transparent semi-cylindrical surface horizontally formed in order to diffuse the light emitted from the signal lamp and facilitate the confirmation of the signal. Therefore, it is effective for checking the signal of the driver whose elevation angle to the traffic signal changes.

The transparent inclined surface of the antireflection plate for the traffic light for pedestrians is a horizontally long transparent inclined surface so that the pattern of the color indicating plate can be seen.

Since the antireflection plate is used by being attached to the front surface of the signal light by using a frame, it can be easily attached to an existing signal light and converted into an antireflection signal device.

[Brief description of drawings]

FIG. 1 is a side sectional view of a traffic light having an antireflection plate attached thereto.

FIG. 2 is a diagram showing a light beam that diffuses a lamp light passing through an antireflection plate.

FIG. 3 is a partial perspective view of an antireflection plate for a traffic signal for a vehicle.

FIG. 4 is a partial perspective view of an antireflection plate for a pedestrian traffic light.

FIG. 5 is a front view of a traffic signal equipped with an antireflection plate.

FIG. 6 is an overall view showing an embodiment of a traffic signal equipped with an antireflection plate.

[Explanation of symbols]

1 reflector 2 color marking board 3 Antireflection plate 4 Anti-reflection slope 5 Transmission slope 6 lights 6a, 6b, 6c, 6d, 6e, 6f Light beam 7 direct sunlight 8 gaze 9 frames 10 traffic lights

Claims (6)

[Claims] 1. A traffic signal having an antireflection inclined surface (4) for preventing reflection of direct sunlight incident on a signal light of a traffic signal and for blocking direct sunlight, and a transmission inclined surface (5) for transmitting the light of the signal light. Anti-reflection plate. 2. The antireflection reflection surface (4) and the transmission inclination surface (5) according to claim 1, wherein two slender and horizontally long surfaces are combined in a chevron shape and are inclined so as to protrude forward, Make sure that the inclined surface (4) does not interfere with signal confirmation.
Anti-reflection plate for traffic lights, which is tilted at an angle close to the elevation angle of the line of sight looking up at the signal. 3. The anti-reflection of a traffic light according to claim 1, wherein the anti-reflection inclined surface (4) and the transmission inclined surface (5) are combined in a laterally long mountain shape, and the surfaces are arranged in parallel in a stripe pattern. Board. 4. The transparent inclined surface (5) according to claim 1.
An anti-reflective plate for a traffic signal that has a thin, horizontally elongated, transparent, semi-cylindrical surface in a streak shape so as to diffuse the light of the signal lamp that passes through. 5. The antireflection of the traffic light according to claim 1, wherein the transparent inclined surface (5) according to claim 1 is a horizontally long transparent inclined surface so that the pattern of the color marking plate can be seen in the pedestrian traffic light. Board. 6. The antireflection plate constructed as described above is attached to a front surface of a signal lamp to prevent reflection of direct sunlight.
Anti-reflection plate for traffic lights.