JP2567580B2 - Signal light pseudo lighting phenomenon prevention device - Google Patents

Description

Description: TECHNICAL FIELD The present invention is capable of effectively preventing a pseudo lighting phenomenon due to sunlight, in particular, the morning sun and the setting sun, and a signal lamp pseudo that can more clearly determine a lighting / extinguishing state. A lighting phenomenon prevention device.

[Background technology]

For example, in the current car society, the role of traffic lights is very important for smooth road traffic. Such a traffic light is required to be surely recognized by a driving vehicle under any environment.

As is well known, since the traffic light is a self-luminous type that uses a light bulb, if the surrounding brightness is low, the relative brightness increases and it can be clearly recognized. The brightness may be low and recognition may be difficult. Actually, such a problem occurs when the sunlight directly shines on the lens surface of the signal light, that is, when the sun is at a low position such as the morning sun or the setting sun. It may be incident and reflected, and may be mistakenly recognized as if the signal lamp was lit. This is the so-called pseudo lighting phenomenon,
This is a problem that must be solved with signal lights.

As a means for eliminating such a pseudo-lighting phenomenon, for example, a light-shielding lens for a signal lamp such as Japanese Utility Model Laid-Open No. 3-54100 is known. In this conventional example, a large number of cylindrical condenser lens elements having a predetermined curvature are formed in an array on the back surface side of a lens formed of a light-transmissive material, and the front surface side of the lens corresponds to each of the condenser lens elements. And a light-shielding lens having a structure in which a light-shielding film is adhered between the diffusion lenses is formed between the front lens of the signal lamp and the light source. Is. That is, the light from the light bulb of the light source is condensed and emitted by the condenser lens element, while the sunlight is blocked by the light shielding film and diffused into the signal lamp by the diffusion lens element to prevent the pseudo lighting. It is what

However, in this light-shielding lens, when the sunlight shines from the front directly when the light is turned off, the sunlight that enters the diffusing lens element that has the concave continuous shape linearly enters the signal lamp and is reflected by the reflector inside the signal lamp. After that, the light is emitted again through the condensing lens element, which causes a pseudo lighting phenomenon, and surface reflection occurs on the surface of the diffusion lens element itself, and the signal lamp is turned off by a synergistic effect with the pseudo lighting phenomenon. It becomes difficult to identify the state. Therefore, when the sunlight is incident on the light-shielding lens at a certain angle, an excellent effect of preventing the pseudo-lighting phenomenon can be exhibited, but the pseudo-lighting phenomenon by the sunlight incident from the front such as the setting sun or the sunrise is possible. Is difficult to prevent.

In short, in order to prevent the pseudo lighting phenomenon, it is necessary to have the contradictory function of blocking the sunlight that is the external light as much as possible, while outputting the internal light from the internal light source as efficiently as possible. Although various improvements have been made, the current situation is that no signal lamp that can effectively solve the pseudo lighting phenomenon has been developed.

Therefore, in the present invention, the sunlight is blocked as much as possible,
Moreover, it is an object of the present invention to provide a pseudo-lighting phenomenon prevention device capable of efficiently emitting internal light.

[Disclosure of Invention]

A first feature of the pseudo-lighting prevention device according to the present invention is that the pseudo-lighting prevention device provided between the light source of the signal lamp body and the cover lens for preventing the pseudo-lighting phenomenon of the signal light includes a large number of spherical bodies. A pair of composites that are arranged in a matrix on a flat surface, and are formed in a chain shape such that the front, rear, left, and right contacts are squeezed together and closely contacted with each other leaving spherical surfaces above and below, and the upper and lower spherical surfaces are used as spherical body lenses. A spherical body lens and a pair of compound spherical body lenses are provided between the spherical body lens and the pair of compound spherical body lenses. The lens surface of each spherical body lens is received from the corresponding side, and the lens surface of the spherical body lens is received in the light transmitting hole. And a light-shielding body as a spacer for positioning the focal point of one spherical body lens corresponding to the vicinity of the apex of the lens surface of the other spherical body lens in this state.

According to such a pseudo lighting phenomenon prevention apparatus of the present invention,
Even if the direct sunlight comes in directly from the front, it is first refracted by each spherical lens of the compound spherical lens on the cover lens side (outer side), and is focused in the light-transmitting hole of the light shield to be extremely small. The light is reduced, and this time, it is refracted by the spherical body lens of the compound spherical body lens on the side (inner side) of the signal lamp light source, and enters the signal lamp in a diffused state. Since sunlight is incident in a diffused state in this way, the amount of reflected light that is reflected within the signal lamp and is about to exit is reduced, and at the same time the reflected light is blocked by the light shield, so the brightness inside and outside the signal lamp is reduced. The contrast becomes larger. At this time, there is a small amount of sunlight that is surface-reflected on the outer surface of the outer spherical compound lens, but this is because there is no flat portion on the surface of the spherical compound lens, and it is a collection of approximately hemispherical convex surfaces. Therefore, it will be greatly diffused and reflected,
Its brightness is extremely low.

On the other hand, when the light source in the signal lamp using this pseudo lighting phenomenon prevention device is turned on, the light beam from the light source is refracted in each spherical body lens of the inner compound spherical body lens and focused in the light transmitting hole to be reduced to an extremely small size. Then, the light is transmitted while being refracted and expanded in each spherical lens of the outer compound spherical lens. Therefore, good visibility can be obtained without seeing the shadow of the light shield from the outside.

The compound spherical lens of such a pseudo lighting phenomenon prevention device may be formed using an acrylic resin or a glass material. That is, when importance is attached to economy and weight, an acrylic resin which is lightweight and excellent in workability is suitable, and when importance is attached to light transmittance, a glass material is suitable. Further, if the light shielding body is formed by using a metal plate provided with light transmitting holes by punching, a light shielding body having good workability and high strength can be obtained.
That is, the signal lamp in which the pseudo-lighting phenomenon prevention device is installed has a maximum temperature of about 120 ° C. due to heat generated when the light source is turned on. Therefore, such a light-shielding body is sandwiched between the complex spherical body lenses to be integrated. As a result, it is possible to obtain sufficient strength to withstand high temperatures, and it is possible to prevent the focal point shift of each spherical lens of the compound spherical lens. Furthermore, it is preferable that the inner side surface portion of the light-transmitting hole of the light-shielding body and / or the surface portion other than the light-transmitting hole is colored in black so that superior light-shielding property can be obtained.

Also, if a mirror surface portion is provided on the signal light source side of the inner surface of each light transmitting hole, the light from the light source is amplified by the reflection by the mirror surface portion and the light passes through the light transmitting hole of the light shield. The brightness will be further increased. In this case, since the light beam can be converged as compared with a light beam that does not form a mirror surface portion, the viewing angle can be controlled, which is more convenient when used at an intersection having a narrow intersection angle.

As a second feature of the pseudo lighting phenomenon prevention device according to the present invention, in the pseudo lighting phenomenon prevention device provided between the light source of the signal light body and the cover lens in order to prevent the pseudo lighting phenomenon of the signal lamp, a large number of spherical bodies are flat. A pair of compound spheres that are arranged in a matrix on top of each other and are formed in a chain that crushes the front, rear, left, and right contacts to leave them in close contact with each other, leaving spherical surfaces above and below, and uses the upper and lower spheres as spherical lenses. A body lens and a pair of compound spherical body lenses, and a light-transmitting slit that receives the lens surface of each spherical body lens from the corresponding side. The lens surface of the spherical body lens is received in the light-transmitting slit. A light-shielding body as a spacer for positioning the focal point of one spherical body lens in a state corresponding to the vicinity of the apex of the lens surface of the other spherical body lens. It is.

According to such a pseudo-lighting phenomenon prevention device, the direct sunlight is refracted by each spherical body lens of the outer compound spherical body lens and focused in the light-transmitting slit to be reduced to an extremely small size. The light is refracted within each spherical body lens of the inner complex spherical body lens and enters the signal lamp in a diffused state. In this way, sunlight enters in a diffused state,
The reflected light that is going to be reflected and emitted in the signal lamp is reduced,
At the same time, since the reflected light is sufficiently blocked by the crosspiece of the light shield, the brightness contrast between the inside of the signal lamp and the outside of the signal lamp is increased. At this time, there is a small amount of sunlight that is surface-reflected on the outer surface of the outer spherical compound lens, but this is because there is no flat portion on the surface of the spherical compound lens, and it is a collection of approximately hemispherical convex surfaces. Therefore, the light is largely diffused and reflected, and the brightness becomes extremely small.

On the other hand, when the light source in the signal lamp using this pseudo lighting phenomenon prevention device is turned on, the light beam from the light source is refracted in each spherical body lens of the inner complex spherical body lens and is focused in the translucent slit to be reduced to an extremely small size. Then, the light is transmitted while being refracted and expanded in each spherical lens of the outer compound spherical lens. Therefore, good visibility can be obtained without seeing the shadow of the light shield from the outside.

When the light-transmitting slit of the light shield in such a pseudo-lighting phenomenon prevention device is sized to receive three spherical body lenses of the compound spherical body lens from the corresponding side, a sufficient pseudo-lighting phenomenon prevention effect can be obtained. It is preferable because the translucency at the time of lighting the signal lamp is increased, the brightness is further improved, and the visibility is further improved.

Further, the portions other than the light-transmitting slits of the light shielding body are left as horizontal crosspieces and horizontal crosspieces, which are orthogonal to the vertical crosspieces in the central portion of the horizontal crosspieces, and the vertical and horizontal crosspieces are lens boundary portions of each spherical body lens of the compound spherical lens. If it is provided so as to correspond to the above, the horizontal cross-piece exerts a sufficient light-shielding function while the shadow thereof is almost invisible, and at the same time, the vertical cross-piece further improves the strength of the light-shielding body. Further, if the light shielding body is a plastic molded product, it is excellent in workability and can be made lightweight, which is excellent in economical efficiency. By sandwiching and integrating such a light-shielding member between the composite spherical body lenses, it is possible to obtain strength enough to withstand high temperature, and it is possible to prevent deviation of the focus of each spherical body lens of the composite spherical body lens. Then, the light shield is colored black, or
If a mirror surface portion is provided on a portion of the inner side surface portion of the light-transmitting slit, which is close to the signal lamp light source, the same effect as described above can be obtained.

In addition, if a pair of compound spherical lenses of such a pseudo-lighting phenomenon prevention device are fixed to each other particularly at the central portions thereof, the strength of the central portion corresponding to the signal lamp light source portion having the highest temperature is increased. It is more preferable because it is possible.

In the present specification and claims, the term “signal light” is a broad concept including not only traffic signal lights but also aviation sign lights.

[Brief description of drawings]

FIG. 1 is a side view of a compound spherical lens according to the present invention.

FIG. 2 is a side view of the pseudo lighting phenomenon prevention apparatus according to the first embodiment of the present invention.

FIG. 3 is a plan view of the light shield according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view of essential parts of a pseudo lighting phenomenon prevention apparatus according to the first embodiment of the present invention.

FIG. 5 is a sectional view of an essential part of a light shield according to a second embodiment of the present invention.

FIG. 6 is a side view of a pseudo lighting phenomenon prevention apparatus according to a second embodiment of the present invention.

FIG. 7 is a side view including a partial cross section of the signal lamp body in which the pseudo lighting phenomenon prevention apparatus according to the first and second embodiments of the present invention is installed.

FIG. 8 is an explanatory diagram showing a state when sunlight is directly radiated in the pseudo lighting phenomenon prevention apparatus according to the first and second embodiments of the present invention.

FIG. 9 is an explanatory diagram showing a state when the signal lamp of the pseudo lighting phenomenon prevention apparatus according to the first embodiment of the present invention is turned on.

FIG. 10 is an explanatory view showing a state when the signal lamp of the pseudo lighting phenomenon prevention apparatus according to the second embodiment of the present invention is turned on.

FIG. 11 is a side view of a pseudo lighting phenomenon prevention apparatus according to a third embodiment of the present invention.

FIG. 12 is a plan view of a light shield according to a third embodiment of the present invention.

FIG. 13 is a cross-sectional view of essential parts of a pseudo lighting phenomenon prevention apparatus according to the third embodiment of the present invention.

FIG. 14 is a sectional view of a main part of a light shield according to a fourth embodiment of the present invention.

FIG. 15 is a side view of a pseudo lighting phenomenon prevention apparatus according to a fourth embodiment of the present invention.

FIG. 16 is a side view including a partial cross section of the signal lamp body in which the pseudo lighting phenomenon prevention apparatus according to the third and fourth embodiments of the present invention are installed.

FIG. 17 is an explanatory diagram showing a state when sunlight is directly shining on the pseudo-lighting phenomenon prevention apparatus according to the third and fourth embodiments of the present invention.

FIG. 18 is an explanatory view showing a state when the signal lamp of the pseudo lighting phenomenon prevention apparatus according to the third embodiment of the present invention is turned on.

FIG. 19 is an explanatory diagram showing a state when the signal lamp of the pseudo lighting phenomenon prevention apparatus according to the fourth embodiment of the present invention is turned on.

[Best mode for carrying out the invention]

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The same parts are designated by the same reference numerals, and duplicate description will be omitted.

First Embodiment As shown in FIG. 1, a pseudo lighting phenomenon prevention apparatus A of this example is made of, for example, an acrylic resin or a glass material, and a large number of spheres are arranged in a matrix on a plane, and spherical surfaces are arranged above and below the spheres. A pair of compound spherical pair lenses 2 and 2 which are formed in a chain shape in which the front, rear, left and right contacts are crushed and closely adhered to each other without leaving a gap, and the upper and lower spherical surfaces are utilized as spherical body lenses 1, 1 ,. Light shield 3 as shown in FIG.
And the composite spherical lenses 2 and 2 are opposed to each other,
As shown in FIG. 2, a light shield 3 is interposed therebetween.

Vertical direction of compound spherical lens 2 (direction of arrow in FIG. 1)
When viewed from above, each spherical lens 1, 1, ... Has a state in which substantially squares are arranged in a matrix without gaps. Further, acrylic resin or glass material is suitable for the material of the compound spherical lens 2, but the material is not limited to this, and other materials having translucency, such as spectacles, hard and soft contact lenses, can be used. It is also possible to use the materials used.

The light shield 3 is formed by using a metal plate in this example, and as shown in FIG. 3, a light transmitting hole 4 having a substantially circular cross section is formed at a portion corresponding to the lens surface of each spherical lens 1, 1 ,. 4, ...
Are provided by, for example, punching, and other surface portions other than the light-transmitting holes 4, 4, ... And / or the light-transmitting holes 4,
The inner side surfaces of 4, ... Are colored black.

Then, as shown in FIG. 4, the lens surfaces a, a, ... Of the spherical lenses 1, 1, ... Are put into the respective light transmitting holes 4, 4 ,. The light shield 3 is sandwiched between the compound spherical lenses 2 while maintaining a constant minute space b. By interposing the light shield 3 between the complex spherical lenses 2 and 2 as described above, the strength of the pseudo lighting phenomenon prevention apparatus A is increased. At this time,
The thickness of the light shield 3 is adjusted so that the focus of each spherical body lens 1 of the one compound spherical body lens 2 is near the apex of the lens surface a of the other spherical body lens 1 in the space b. For example,
When the radius of curvature of the lens surface a of the spherical lens 1 is 3.5 mm, the thickness of the space b is 1.3 to 1.4 mm.

Second Embodiment As shown in FIG. 5, in the pseudo lighting phenomenon prevention apparatus A-1 of this example, the outer side surface portion 5 of the light shield 3-1 having the same shape as that of the first embodiment has a black matt finish. In addition, the mirror surface portion 6 is formed on the signal light source side of the inner surface portion of each of the light transmitting holes 4, 4 ,. Then, as shown in FIG. 6, similarly to the first embodiment, each of the light transmitting holes 4 of the light shield 3-1 is
, In each of the lens surfaces a of the spherical lenses 1, 1 ,.
, a are inserted from the corresponding sides, and the compound spherical lens 2, with a certain minute space portion b being held between the vertices.
The light shield 3-1 is sandwiched between the two.

Example of Attachment to Signal Light Main Body of First and Second Embodiments As shown in FIG. 7, the signal light main body 7 to which the pseudo-lighting phenomenon prevention apparatus according to the first and second embodiments is attached has a mirror surface portion 8a formed on the inner surface thereof. And a light source 9 (a light bulb is used in this example) held by a light source holding portion 8b provided at the center of the lower portion of the curved mirror 8, and a cover lens 10. ing.

The cover lens 10 is, for example, red in the case of a traffic light,
A color lens that is colored blue, yellow, or the like, and a flange portion 10a extends on the periphery of the lens surface. On the other hand, the mirror mirror 8
A flange portion 8c and a side wall portion 8d extending substantially at a right angle from the flange portion 8c are provided at the opening end of the. Then, the peripheral portion of the pseudo lighting phenomenon prevention device A or A-1 is sandwiched between the flange portion 8c of the curved mirror 8 and the flange portion 10a of the cover lens 10, and the cover lens is attached to the side wall portion 8d of the curved mirror 8. The flange portion 10a of 10 is fixed. In this way, the pseudo lighting phenomenon prevention device A or A-1 is installed between the cover lens 10 and the light source 9.

Next, a case where sunlight such as the morning sun or the setting sun shines directly on the signal lamp body 7 provided with the pseudo lighting phenomenon prevention device A or A-1 will be described. That is, as shown in FIG. 8, the sun rays c incident on the pseudo-lighting phenomenon prevention device A or A-1 are refracted in the spherical body lenses 1, 1, ... Of the outer complex spherical body lens 2. Are focused in the space b and are reduced to an extremely small size, and this time they are incident in a diffused state into the signal lamp body 7 that is refracted in the respective spherical body lenses 1, 1, ... Of the inner complex spherical body lens 2. . Since sunlight is incident in a diffused state in this way, the reflected light that is reflected by the mirror surface portion 8a of the curved mirror 8 and is about to exit is reduced, and at the same time, the reflected light is blocked by the light shield 3 or 3-1. Therefore, the brightness contrast between the inside of the signal lamp body 7 and the outside of the signal lamp body 7 becomes large. In addition, although there is a small amount of sunlight that is surface-reflected on the outer surface of the outer compound spherical body lens 2, this is because there is no flat portion on the surface of the compound spherical body lens 2 and it has a substantially hemispherical shape. Since it is a collection of convex surfaces of, it will be diffused greatly and reflected,
This brightness is extremely small. Further, such surface-reflected light decreases in proportion to the radius of curvature of the lens surface of the spherical lens 1, so that the radius of curvature of the lens surface of the spherical lens 1 may be adjusted as appropriate if it is of concern.

On the other hand, as shown in FIG. 9, when the light source 9 in the signal lamp body 7 using the pseudo-lighting phenomenon prevention apparatus A is turned on, the light beam d from the light source 9 causes each spherical body lens 1 of the inner complex spherical body lens 2, A state in which light is refracted in 1, ..., Focused in the space b and reduced to an extremely small size, and is transmitted while being refracted and expanded in each spherical lens 1, 1 ,. Become. Therefore, good visibility can be obtained without seeing the shadow of the light shield 3 from the outside.

Further, as shown in FIG. 10, the pseudo lighting phenomenon prevention device A-
When the light source 9 in the signal lamp body 7 using 1 is turned on, the light beam d by the light source 9 is refracted in each spherical body lens 1, 1, ... Of the inner complex spherical body lens 2 and focused in the space b. Are reduced to a very small size, and light is transmitted while being refracted in each spherical lens 1, 1, ... Of the outer compound spherical lens 2. Moreover, in this case, the light shield 3-
The light source 9 is reflected by the mirror surface portion 6 formed on the side of the first light source 9
The light d from the light source is amplified and passes through the light transmitting hole 4 of the light shield 3-1 so that the brightness is further increased. Further, since the light beam can be converged as compared with the case where the mirror surface portion 6 is not formed, the viewing angle can be controlled, which is more convenient when used at an intersection having a narrow intersection angle.

Third Embodiment As shown in FIG. 11, the pseudo lighting phenomenon prevention apparatus B of this example is made of, for example, an acrylic resin or a glass material, and has a large number of spheres arranged in a matrix on a plane, and spherical surfaces above and below the spheres. A pair of compound spherical body lenses 200, 200, which are formed in a chain shape such that the front, rear, left, and right contacts are crushed and closely adhered to each other without leaving a gap, and the upper and lower spherical surfaces are utilized as spherical body lenses 100, 100 ,. A light shield 300 as shown in FIG. 12 is provided, and the composite spherical body lenses 200, 200 are opposed to each other, and the light shield 300 is interposed therebetween.

When viewed from the vertical direction of the compound spherical body lens 200 (the same as in FIG. 1), each spherical body lens 100, 100, ... Has a state in which substantially squares are arranged in a matrix without gaps. Further, as a material of the composite spherical body lens 200, an acrylic resin or a glass material is suitable,
The material is not limited to this, and it is also possible to use another material having a light-transmitting property, for example, a material used for eyeglasses, hard or soft contact lenses.

The light shield 300 is a molded product using plastic in this example, and as shown in FIG. 12, each spherical lens 100, 100, ...
Light-transmitting slit 40 with a size that accepts 3 lens surfaces
2, 402, ... Are provided, and the horizontal bar 40 is provided at a portion corresponding to the lens boundary portion of every three lens surfaces of the spherical body lens 100.
It has a structure in which 0, 400, ... Are formed, and it is colored black overall. Further, the light shielding body 300 is provided with vertical bars 401 for improving strength so as to be orthogonal to each other at the central portions of the horizontal bars 400, 400 ,. This vertical bar 400 is a reinforcing member for more reliably preventing the pseudo lighting phenomenon prevention device B from being deformed due to the high temperature caused by the lighting of the light source in the signal lamp body, and the focus relationships of the spherical lenses 100, 100 ... Is provided as. It should be noted that such a vertical bar 401 is provided at a portion corresponding to the lens boundary portion of each spherical lens 100.

Further, a fixing portion 301 is provided at the center of the light shield 300. The fixing portion 301 has five fixing holes 301a, 301a, ... At a portion corresponding to the lens boundary portion of the spherical body lens 100, and the composite spherical body lenses 200, 2 are provided through the fixing holes 301a.
Male and female bosses (not shown), which are aligned and project from each other, are fitted to the lens boundary portion of 00 and fixed by an adhesive. Further, in this fixed portion 301, a plurality of light-transmitting holes 301 are formed in a portion corresponding to the lens surface of the spherical lens 100.
b is provided so that the lens surface of the spherical lens 100 is inserted. By fixing the central part of the compound spherical lens 200 in this way, it is possible to particularly increase the strength of the central part that becomes the highest temperature due to lighting of the light source in the signal lamp.

Then, as shown in FIG. 13, translucent slits 402, 402,
, Lens surface a ′ of each spherical lens 100, 100 ,.
Three a ', ... Are inserted from the corresponding side, and the light shield 300 is sandwiched between the complex spherical lenses 200, 200 in a state in which a certain minute space b'is held between the vertices. By thus interposing the light shield 300 between the complex spherical lenses 200, 200, the strength of the pseudo lighting phenomenon prevention apparatus B is increased. At this time, one of the compound spherical lenses
The thickness of the light shield 300 is adjusted so that the focus of each spherical body lens 100 of 200 is near the apex of the lens surface a ′ of the other corresponding spherical body lens 100 in the space b ′. For example, when the radius of curvature of the lens surface a ′ of the spherical lens 100 is 3.5 mm,
The thickness of the space b'is 1.3 to 1.4 mm.

Fourth Embodiment As shown in FIG. 14, the pseudo lighting phenomenon prevention apparatus B-1 according to the fourth embodiment has an inside of each of the light-transmitting slits 402, 402, ... Of a light shield 300-1 having the same shape as that of the third embodiment. The mirror surface portion 600 is formed on the surface portion at intervals of about 1/3 of the thickness from the signal light source side. Then, as shown in FIG. 15, in the same manner as the third embodiment, the lens surfaces a ′ of the spherical lenses 100, 100 ,.
A ', ... Are inserted from the corresponding side by three, and a light shield 300-1 is sandwiched between the compound spherical lenses 200, 200 in a state of holding a constant minute space b'between the vertices. It

Example of Attachment to Signal Light Main Body of Third and Fourth Embodiments A signal light main body 700 to which the pseudo lighting phenomenon prevention device according to the third and fourth embodiments is attached, as shown in FIG.
A bowl-shaped curved mirror 800 with a mirror surface portion 800a formed on the inner surface
And the light source holding part 8 provided at the center of the lower part of the curved mirror 800.
A light source 900 (a light bulb is used in this example) held at 00b,
And a cover lens 110.

The cover lens 110 is the same as that of the above-mentioned embodiment, and the flange portion 110a is extended to the periphery of the lens surface. On the other hand, a flange portion 800c and a side wall portion 800d extending substantially vertically from the flange portion 800c are provided at the opening end of the curved mirror 800. The peripheral portion of the pseudo-lighting phenomenon prevention device B or B-1 is sandwiched between the flange portion 800c of the curved mirror 800 and the flange portion 110a of the cover lens 110, and the cover lens is attached to the side wall portion 800d of the curved mirror 800. The flange portion 10a of 110 is fixed. In this way, the pseudo-lighting phenomenon prevention device B or B-1 is installed between the cover lens 110 and the light source 900. Incidentally, in the case of a traffic signal light, it is usually mounted at a position looking up from below, and therefore, when used for this, the pseudo lighting phenomenon prevention device B or B-1 is used.
Should be inclined downward at a predetermined angle related to the signal lamp installation height. By doing so, light rays emitted from the light source 900 as described below have a state of having an optical axis close to the line of sight to further improve visibility, while the sun rays are diffused as described later. At the same time, the light is obliquely incident and is reflected by the curved mirror 800, so that it is projected upward or downward in the signal lamp main body 700, and it becomes difficult for reflected light of sunlight to directly appear on the complex spherical lens 200. Therefore, the pseudo lighting phenomenon can be prevented more reliably (this is also the case in the first and second embodiments).

Next, a case where sunlight such as the morning sun or the setting sun directly shines on the signal lamp body 700 provided with the pseudo lighting phenomenon prevention device B or B-1 will be described. That is, as shown in FIG. 17, the sun rays c ′ incident on the pseudo-lighting phenomenon prevention device B or B-1 are refracted within each spherical body lens 100, 100, ... Of the outer compound spherical body lens 200. Then, the light is focused in the space b ′ and reduced to a very small size, and in this state, it is refracted in each spherical lens 100, 100, ... Of the inner compound spherical lens 200 and diffused in the signal light body 700. Incident. Since sunlight is incident in a diffused state in this way, the reflected light that is reflected by the mirror surface portion 800a of the curved mirror 800 and is about to be emitted is reduced, and at the same time, the cross beam of the light shield 300 or 300-1 is reduced.
Since the reflected light is sufficiently blocked by 400, the signal light body 7
The brightness contrast between the inside of 00 and the outside of the signal light body 700 increases. In addition, the outer compound spherical lens
There is a small amount of sunlight that is reflected on the outer surface of the 200, but this is because there is no flat portion on the surface of the complex spherical lens 200, and it is a large collection of semispherical convex surfaces, so it diffuses greatly. The reflected light is reflected and its brightness is extremely low. Further, such surface-reflected light decreases in proportion to the radius of curvature of the lens surface of the spherical lens 100, so that the radius of curvature of the lens surface of the spherical lens 100 may be appropriately adjusted if it is of concern.

On the other hand, as shown in FIG. 18, when the light source 900 in the signal lamp body 700 using the pseudo lighting phenomenon prevention apparatus B is turned on, the light source 90
The ray d ′ due to 0 is refracted in each spherical body lens 100, 100, ... Of the inner complex spherical body lens 200, is focused in the space b ′, and is reduced to a very small size, and the outer complex spherical body lens. The light is transmitted while being refracted and expanded in each of the spherical lenses 100, 100 ,. Therefore, the shadow of the cross rail 400 of the light shield 300 is not visible from the outside, and good visibility can be obtained as in the past.

Further, as shown in FIG. 19, the pseudo lighting phenomenon prevention device B-
When the light source 900 in the signal lamp main body 700 using No. 1 is turned on, the light beam d ′ by the light source 900 is refracted in each spherical body lens 100, 100, ...
The light is focused inside and is reduced to an extremely small size, and the light is transmitted while being refracted inside each spherical body lens 100, 100, ... Of the compound spherical body lens 200 on the outside. Moreover, in this case, the mirror surface portion 600 formed on the light source 900 side of the light shield 300-1.
The light d'from the light source 900 is amplified by the reflection by the light source 900 and passes through the light transmitting slit 402 of the light shield 300-1, so that the brightness is further increased. Also, the mirror surface 60
Since the rays can be converged as compared with the case where 0 is not formed, the viewing angle can be controlled, which is more convenient when used at an intersection having a narrow intersection angle.

[Industrial availability]

As described above, the pseudo lighting phenomenon prevention apparatus according to the present invention is
While the pseudo lighting phenomenon can be effectively prevented, the same visibility as before can be maintained when the signal is lit, so it is very suitable for use in traffic lights, aviation beacons, etc., and further improves safety in traffic, aviation, etc. To be enhanced.

Claims (13)

(57) [Claims] 1. A pseudo-lighting phenomenon prevention device provided between a light source of a signal light body and a cover lens for preventing a pseudo-lighting phenomenon of a signal light, wherein a large number of spheres are arranged in a matrix on a plane and are arranged above and below the sphere. A pair of compound spherical body lenses which are formed in a chain shape such that the front, rear, left and right contact points are crushed and closely contacted with each other leaving a spherical surface, and the upper and lower spherical surfaces are utilized as spherical body lenses, and the pair of compound spherical body bodies Intervening between the lenses,
Each spherical body lens has a light-transmitting hole that receives the lens surface from the corresponding side, and with the lens surface of the spherical body lens received in the light-transmitting hole, the focus of one spherical body lens is the lens of the other spherical body lens. A light-shielding body as a spacer for positioning corresponding to the vicinity of the apex of the surface, and a pseudo lighting phenomenon prevention apparatus. 2. The pseudo lighting phenomenon prevention apparatus according to claim 1, wherein the light shield is formed by using a metal plate having a light transmitting hole formed by punching. 3. The light shielding body according to claim 1, wherein an inner side surface portion of the light transmitting hole and / or a surface portion other than the light transmitting hole is colored black. Pseudo lighting prevention device. 4. The pseudo lighting phenomenon prevention device according to claim 1, wherein a mirror surface portion is provided on an inner side surface portion of each light transmitting hole on a signal light source side. 5. The pseudo lighting phenomenon prevention device according to claim 1, wherein the compound spherical lens is formed of an acrylic resin or a glass material. 6. A pseudo-lighting phenomenon prevention device provided between a light source of a signal light body and a cover lens for preventing a pseudo-lighting phenomenon of a signal light, wherein a large number of spheres are arranged in a matrix on a plane and are arranged above and below the sphere. A pair of compound spherical body lenses which are formed in a chain shape such that the front, rear, left and right contact points are crushed and closely contacted with each other leaving a spherical surface, and the upper and lower spherical surfaces are utilized as spherical body lenses, and the pair of compound spherical body bodies Intervening between the lenses,
It has a translucent slit that receives the lens surface of each spherical lens from the corresponding side, and the focus of one spherical lens is the lens of the other spherical lens while the lens surface of the spherical lens is received in the transmissive slit. A light-shielding body as a spacer for positioning corresponding to the vicinity of the apex of the surface, and a pseudo lighting phenomenon prevention apparatus. 7. The pseudo lighting phenomenon prevention apparatus according to claim 6, wherein the light-transmitting slit of the light-shielding body receives three spherical body lenses of the composite spherical body lens from corresponding sides. 8. A light-shielding body is left as a horizontal rail and a vertical rail except for the light-transmitting slit, and is orthogonal to the vertical rail at the central portion of the horizontal rail, and the vertical horizontal rail is of each spherical body lens of the composite spherical body lens. The pseudo lighting phenomenon prevention device according to claim 6, which is provided so as to correspond to a lens boundary portion. 9. The pseudo-lighting phenomenon prevention apparatus according to claim 6, wherein the light shield is colored black. 10. The pseudo lighting phenomenon according to any one of claims 6 to 9, wherein an inner side surface portion of the light-transmitting slit of the light shield has a mirror surface portion in a portion thereof near the signal light source. Prevention device. 11. The pseudo lighting phenomenon prevention device according to claim 6, wherein the pair of complex spherical lenses are fixed to each other at least at a central portion thereof. 12. The compound spherical lens is formed by using an acrylic resin or a glass material.
12. The pseudo-lighting phenomenon prevention device according to any one of Item 11. 13. The pseudo-lighting phenomenon prevention device according to claim 6, wherein the light shield is a plastic molded product.