JP2670653B2 - External light reflection prevention device for signal lights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external light reflecting device for preventing reflected light from inside a signal lamp due to sunlight such as Seiyo.

[0002]

2. Description of the Related Art In the rapid car society, traffic signal lights play an increasing role in smooth road traffic. Traffic lights need to be reliably recognizable by the driver of the vehicle in any environment. As is well known, the traffic signal light is a self-luminous type using a light bulb, and has a feature that relative brightness increases when ambient lighting is dark and can be recognized brightly. However, this may lead to difficulty in recognition if the ambient illumination is bright from a different viewpoint. The actual problem is when sunlight enters the center of the signal light at a right angle. There are Asahi and Seiyo as incidents at a right angle, but for the sake of convenience, we will call them Seiyo.

When Seiyo is incident on a traffic light, it is extremely difficult to recognize whether the traffic light is on or off. This is because the sun rays pass through the front lens and enter the lamp, and are scattered or diffused by the diffusion curved surface inside the lamp for the electric bulb to cancel or rumor the brightness of the electric bulb.

[0004]

In order to prevent the above-mentioned phenomenon, it is important to block sunlight as external light as much as possible and to emit internal light from the electric bulb as efficiently as possible. However, these requirements are reciprocal rules,
Although various improvements have been made so far, the present situation is that no signal lamp with a significant difference has been developed. Therefore, in the present invention, in order to solve the above problems, the sun rays are blocked,
Moreover, it is an object of the present invention to provide an external light reflection preventing device including two multi-lens lens plates that efficiently emit internal light.

[0005]

The above object of the present invention can be achieved by the following apparatus. That is, two transparent chained spherical plate parts, which are shaped so that the peripheral edges of a large number of transparent spheres are in close contact with each other in the vertical and horizontal directions, face each other with their transparent spheres facing each other with a certain distance. The external light reflection prevention device of the signal light and the transparent shape in which the peripheral edges of a large number of transparent spheres are in close contact with each other in the vertical and horizontal directions, which are characterized in that they are made to overlap A chain of spherical spheres and a large number of transparent spheres are closely contacted in the vertical and horizontal directions in a state of closely contacting each other. And a peripheral surface of a large number of transparent spheres for a signal lamp, characterized in that the transparent sphere and the concave surface face each other and are overlapped with each other in a state where the respective optical axes coincide with each other. The transparent continuous spherical sphere plate part in the shape of close contact with each other in the vertical and horizontal directions, and the peripheral edges of many transparent spheres in close contact with each other in the vertical and horizontal directions, and each transparent inside It is characterized in that the transparent chained spherical plate part in which the top of the sphere is formed into a concave surface is superposed in a state in which the transparent sphere and the concave surface face each other at a constant interval and each optical axis is aligned. It is an external light reflection preventing device for a signal lamp.

[0006]

As shown in FIG. 5, the apparatus for preventing external light reflection of a signal lamp according to the present invention has a light source 7 of a light bulb provided in the center of a diffused curved mirror 6 for a lamp inside the lamp body of the signal lamp.
A transparent curved plate 8 having a hemispherical shape is attached to the open end of the device. The external light reflection preventing device A, A ′, A ″ of the present invention is provided between the transparent curved plate 8 and the light source 7. Is provided.

Therefore, as shown in FIGS. 6, 7 and 8, the sunlight rays d incident on the external light antireflection devices A, A ', A''are transmitted through the outer transparent chain spherical plate portion 2,
Transparent spheres 1, 1, which are fixed together without a gap of 2 ', 2''
..Refracted inside to focus in space a, reduced to a very small size, and again inside transparent chained spherical plate parts 2, 2,
Since it is refracted in each of the transparent spheres 1, 1,... Fixed to each other without any gap and is diffused into the signal lamp main body 5, reflection by the above-mentioned diffused curved mirror 6 in the lamp lamp is prevented.

Next, as shown in FIG. 9, when the light source 7 in the signal light main body 5 is turned on in the external light reflection preventing device A, the light beam e from the light source 7 is applied to the inner transparent chain spherical plate portion 2. .. are refracted within the transparent spheres 1, 1, ...
Again, each transparent sphere 1, 1, of the transparent chained spherical plate 2 on the outside
..Transmitted while being refracted inside. As shown in FIG. 10, when the light source 7 in the signal light main body 5 is turned on in the external light antireflection device A ′, the light beam e from the light source 7 is transmitted to each of the transparent spheres of the inner transparent chain sphere plate 2. Refracted in 1, 1,..., Focuses in the space a, is reduced to a very small size, and is again diffused in one direction by the concave surface b of the outer transparent chain spherical plate portion 2 ′ and is transmitted. It It is used for intersections with narrow intersection angles and is used to control the viewing angle. Next, as shown in FIG. 11, an external light antireflection device A ″
When the light source 7 in the signal lamp main body 5 is turned on, the light ray e from the light source 7 is refracted in the transparent spheres 1, 1,... Is focused, and is reduced to a very small size. The light is transmitted while being converged in one direction by the top concave surface c of the outer transparent chain-shaped spherical plate portion 2 ″ and diffused to the periphery thereof. The external light reflection preventing devices A, A ′, and A ″ can be used for interior lighting as well as signal lights.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An external light reflection preventing device for a signal lamp according to the present invention will be described in detail below with reference to the drawings showing the embodiments. Example 1 As shown in FIGS. 1 and 2, the external light antireflection device A includes:
A single transparent sphere 1, 2, formed in a shape in which the single transparent spheres 1, 1. In order to hold the space a, spacers 4 are provided on the peripheral portions 3, 3 thereof.
It is fixed by sandwiching 4, ...

Embodiment 2 As shown in FIG. 3, an external light antireflection device A 'is formed by linking single transparent spheres 1, 1,... Vertically and horizontally in such a manner that their peripheral edges are in close contact with each other. The transparent chained spherical plate portion 2 formed in a fixed shape and the single transparent spherical body 1, 1, ...
In a state in which their peripheral edges are in close contact with each other, they are chain-fixed in the vertical and horizontal directions, and the transparent chain-shaped spherical plate portion 2 ′ having the inner transparent spheres 1, 1, ... In order to hold the spacers, spacers 4, 4, ... Are sandwiched and fixed to the peripheral edge portions 3, 3.

Embodiment 3 As shown in FIG. 4, an external light antireflection device A ″ is formed by dividing a single transparent sphere 1, 1,... A transparent chain sphere-shaped plate portion 2 formed in a chain-fixed shape and a single transparent sphere 1, 1, ...
Are connected to each other in a vertical and horizontal direction with their peripheral edges being in close contact with each other, and the inner transparent spheres 1, 1, ...
Is fixed to the peripheral edges 3, 3 with spacers 4, 4,... Interposed therebetween in order to maintain a constant minute space a. It is a thing.

Since the interior of the signal lamp body 5 is hermetically sealed, the internal temperature becomes high when the lamp is lit for a long time, which may soften each of the transparent chain spherical plate parts 2, 2 ', 2''. By coating the surface of the diffusing curved mirror 6 in the lamp for a light bulb with a material that transmits only infrared rays to the outside using a dichroic mirror, the internal temperature of the signal lamp body 5 when the light source 7 is turned on is lowered, and the reflected light is reflected. It is intended to increase the brightness of.

[0013]

As described above, according to the present invention, the incident light of the sun due to Xiyang or the like is condensed and dispersed by each transparent sphere, so that the light is reflected by the diffusion curved surface 6 in the signal light bulb. Can be prevented. Further, the light from the light source in the signal light is transmitted through the transparent chain-shaped spherical plate portion without lowering the luminous intensity and is diffused, and the external light having a different light-transmitting action according to the visibility distance under traffic conditions. By utilizing the antireflection device, it is possible to further enhance the effect.

[0013]

[Brief description of the drawings]

FIG. 1 is a side view for explaining an external light reflection preventing device A of the present invention.

FIG. 2 is an explanatory plan view of the same.

FIG. 3 is a side view for explaining an external light reflection preventing device A ′ of the present invention.

FIG. 4 is a side view of an external light reflection preventing device A ″ according to the present invention.

FIG. 5 is an explanatory view showing a state in which the external light reflection preventing device of the present invention is attached to a signal lamp.

FIG. 6 is an explanatory view of the action of sunlight in the external light reflection preventing device A of the present invention.

FIG. 7 is an explanatory view of sunlight action in the external light antireflection device A ′ of the present invention.

FIG. 8 is an explanatory view of sunlight action in the external light reflection preventing device A ″ of the present invention.

FIG. 9 is an explanatory diagram of a light source light action in the external light reflection preventing device A of the present invention.

FIG. 10 is an explanatory diagram of a light source light action in the external light reflection preventing device A ′ of the present invention.

FIG. 11 is an explanatory diagram of a light source light action in the external light reflection preventing device A ″ of the present invention.

[Explanation of symbols]

 A, A ', A' 'External light reflection prevention device a Space portion b Concave surface c Top concave surface 1 Transparent sphere 2, 2', 2 '' Transparent chained spherical plate portion 3 Peripheral portion 4 Spacer 5 Signal lamp body 6 Light bulb lamp Inner diffusion curved mirror 7 Light source 8 Transparent curved plate

Claims (3)

(57) [Claims] 1. A pair of transparent chained spherical plate portions, each having a shape in which the peripheral edges of a large number of transparent spheres are closely contacted with each other in the vertical and horizontal directions, are formed such that the transparent spheres of the two transparent spheres hold a constant interval. An external light reflection preventing device for a signal lamp, characterized in that it is structured such that it is superposed with the respective optical axes facing each other and aligned with each other. 2. A transparent chained spherical plate having a shape in which the peripheral edges of a large number of transparent spheres are in close contact with each other in the vertical and horizontal directions and the peripheral edges of a large number of transparent spheres are in close contact with each other. Along the horizontal and vertical directions, the transparent chained spherical plate with the inner transparent sphere formed in the concave surface is superposed with the transparent sphere and the concave surface facing each other with a fixed interval and each optical axis is aligned. An external light reflection preventing device for a signal light, which is characterized by having a structure as described above. 3. A transparent chained spherical plate having a shape in which the peripheral edges of a large number of transparent spheres are in close contact with each other in the vertical and horizontal directions and the peripheral edges of a large number of transparent spheres are in close contact with each other. A state in which transparent spheres and concave surfaces face each other with a fixed interval held in close contact with each other in the vertical and horizontal directions, and the transparent spherical body inside which has the top of the transparent sphere formed into a concave surface is aligned with each other's optical axis. An external light reflection preventing device for a signal lamp, which is characterized by being superposed by.