JPS621682Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a new vehicle signal light fixture, in which different signal colors are emitted from the same display window. The luminescent display area for each signal color is enlarged, and the signal color is not visible when it is not lit, and the signal color is not emitted in a false manner. The purpose of the present invention is to provide a novel vehicular signal lamp with excellent performance.

BACKGROUND TECHNOLOGY AND PROBLEMS There are several types of lamps attached to vehicle signal lights, such as rear marker lights of automobiles, each having a different signal function. Generally, these several types of lamps are integrally attached to one frame. Figure 1 shows an example of a conventional automobile rear marker light, where the rear marker light a is the turn lamp b.
, a tail-and-stop lamp c, a back-up lamp d, and a reflector e are integrally attached to a mounting frame f to constitute an integrated lamp a. Each of the lamps b, c and d is provided with an independent lamp body and a bulb serving as a light source, and lenses g, h and i are attached to the front surface of each lamp body. ，
h and i are colored red, yellow-orange, etc. so that they emit different signal colors depending on their respective lamp functions. For example, the lens g of the turn lamp b is colored yellow-orange, and the lens h of the tail and stop lamp c is colored red, so that when each lamp is turned on, each lens color changes to the signal color of the lamp. It is now displayed as a luminescent light. Note that the lens i of the back-up lamp d is usually achromatic since this lamp requires a lighting function.

In this way, the lenses g, h, etc., which are colored in several colors such as red and yellow-orange, are of course visible even when the lamp is not lit, so they are not very attractive from a design point of view. It does not look good, and when it is not lit, the signal colors may be displayed as if the lamp were lit. This phenomenon occurs when light such as sunlight enters the lamp body of the lamp from outside the lamp, and is called the false lighting or whooping phenomenon. This phenomenon will be explained in detail in FIG. FIG. 2A is a longitudinal sectional side view of the tail and stop lamp c of the rear marker light a shown in FIG. 1, and FIG. 2B shows details of its inner lens. In the figure, j denotes a lamp body with a reflective surface k formed on its inner surface, and an inner lens l and an outer lens m are attached to the front of the lamp body. A valve n is provided with a filament disposed at the position. The inner lens l has a refractive prism part o in its central region and a total reflection prism part p in its outer peripheral region, and the outer lens m has a large number of fisheye lens cuts q, q, . This outer lens m is colored red. Then, the direct light r, r, ... from the bulb n is refracted through the refraction system prism part o of the inner lens l, and totally reflected through the total reflection system prism part p, and is respectively reflected by the outer lens m. The light beams are emitted so as to intersect perpendicularly to the rays, and are emitted while being appropriately diffused by the fisheye lens cuts q, q, . . . On the other hand, the reflected light s, s, . , are emitted through the inner lens l and the outer lens m in substantially the same manner as the above-mentioned direct light r, r, . . . . However, on the contrary, when sunlight t, t, ... is irradiated from the outside of the lamp body j to the outer surface of the outer lens m, some of these sunlight rays t, t, ... The light is irradiated onto the inner lens l via the outer lens m, and a part of it passes through the refractive prism part o and is irradiated onto the reflective surface k, where it is reflected and exits again via the inner lens l and outer lens m. The remaining part is reflected inside each prism element u, u, . . . of the total reflection prism section p and is again emitted through the outer lens m. Naturally, the sunlight reflected by these reflective surfaces k and the total reflection prism part p and emitted is as follows.
The signal color attached to the outer lens m is displayed by emitting light, and this light emitting display causes surrounding cars to erroneously perceive that the lamp c is lit.

In addition, the installation position and installation space for these rear marker lights a are limited, and if several types of lamps are installed in that limited space, the lens surface that is allowed for each lamp will naturally be limited. size,
In other words, the area of the light-emitting display window is reduced, and in particular, the display window of the turn lamp b in the conventional rear marker light is extremely small, so the light from the bulb is not diffused, and this causes excessive glare to following vehicles. Moreover, since the tail-and-stop lamp c is installed inside the turn lamp b, that is, closer to the center than the side edge of the vehicle body, the correct vehicle width cannot be displayed depending on the light of the tail lamp c. It was hot.

Problems to be Solved by the Invention The aim of the invention is to solve the various problems that the conventional vehicle signal lights mentioned above had. be visible, and when the lamp is not lit, the signal color applied to the lens surface by sunlight etc. will be emitted and displayed, making it erroneously visible as if the lamp was lit. It is an object of the present invention to solve the problem of poor visibility due to the fact that only one signal color can be displayed from one lens surface, that is, a display window, and each display window is made small.

Summary of the invention The present invention is an attempt to solve the above-mentioned problems.It has an achromatic lens surface, one side edge of each surface is supported near the middle of the rear inside the lamp body, and the other side edge is supported near the rear middle of the lamp body. It has two inner lenses that are supported near the front opening of the body and have prism elements formed on the lens surfaces, a light source is provided inside each inner lens, and a light source is provided between the light source and the inner lens. is provided with a filter means for coloring the light from the light source, and a correction prism element is provided in the front opening of the lamp body for directing and emitting the light from the light source through the inner lens in a direction substantially parallel to the lamp axis. It is characterized by having an achromatic correction lens formed thereon and an achromatic outer lens positioned in front of the correction lens, and is capable of displaying light emission in different signal colors from the same display window. As a result, the display window can be significantly enlarged, the light emitting display area of each signal color is increased, and the visibility can be made extremely good. At times, the traffic light color is not visible, and
The object of the present invention is to provide a novel vehicular signal lamp with excellent visibility, which is capable of preventing signal-colored luminescence display caused by sunlight or the like, that is, false lighting.

Example 1 Figure 3 shows an example 1 of the implementation of the vehicle signal lamp of the present invention.
The present invention is applied to a rear indicator light for automobiles.

In the figure, 2 indicates a lamp body, the front of which is opened in a horizontally long rectangular shape, and the rear upper and lower walls are the back wall 3 of the lamp body.
The back covers 4, 4 are removably covered in the openings formed in the openings. The line xx indicates a lamp axis passing approximately through the center of the lamp body 2. A correction lens 7 and an outer lens 8 disposed in front of the correction lens 7 with a slight interval are respectively attached to the opening edge 6 of the front opening 5 of the lamp body 2. The correction lens 7 and the outer lens 8 are arranged so that their lens surfaces are substantially perpendicular to the lamp axis It is said to be a color. On the outer surface of the correction lens 7, that is, the surface facing the outer lens 8, a large number of correction prisms 9, 9, . . This correction prism 9, 9,...
The irradiation direction is corrected so that the light from the light source irradiated onto the correction lens 7 via inner lenses 16 and 17, which will be described later, is irradiated in a direction parallel to the lamp axis xx. Further, on the inner surface of the outer lens 8, that is, the surface facing the correction lens 7, a large number of fisheye lens elements 10, 10, . . . divided into small rectangles are formed. The fisheye lens elements 10, 10, . . . appropriately diffuse the light emitted in the direction parallel to the lamp axis x-x by the correction prism elements 9, 9, . It is something that makes you Then, substantially the entire outer surface of this outer lens 8 becomes a light emitting display window in this lamp 1.

Reference numeral 11 denotes a partition wall formed on the inner surface of the rear wall 3 of the lamp body 2 so as to protrude along the horizontal direction at the center of the rear wall. Locking end surfaces 14, 14 at the ends
It consists of wall plates 15, 15 on which are formed. Although the partition wall 11 is formed integrally with the back wall 3 of the lamp body 2 in this embodiment, it may be formed separately and attached to the inner surface of the back wall 3.

16 and 17 are inner lenses, each having a substantially horizontally long rectangular lens surface, provided inside the lamp body 2, with its upper edge or lower edge facing toward the inner rear center of the lamp body 2. The lamp axis xx is substantially offset from the lamp axis xx and is tilted relative to the lamp axis xx. That is, the upper inner lens 16 disposed in the upper half space of the lamp body 2 is supported with its lower edge 18 fitted between the locking head strip 12 and the locking end surface 14 of the partition wall 11. The upper edge 19 of the lamp body 2 projects outward through an insertion hole 20 formed near the front opening edge 6 of the lamp body 2, and the protruding upper edge 19 is fixed to the front opening edge 6 with a screw 21. on the other hand,
The lower inner lens 17 disposed in the lower half space inside the lamp body 2 has its upper edge 22 intersecting with the locking head strip 12 of the partition wall 11 and the locking end surface 14.
The lower edge 23 of the
is projected to the outside of the lamp body 2 in the same manner as the upper edge 19 of the upper inner lens 16, and is fixed to the front opening edge 6 with a screw 21. The upper edge 19 of the upper inner lens 16 and the lower side 23 of the lower inner lens 17 protrude to the outside of the lamp body 2 because it is not necessary that the respective side edges 19 and 23 protrude over the entire length thereof. A portion of the entire length, for example, may be protruded at several locations and may be fixed to the front opening edge with screws, and instead of using screws 21, each side edge 19, 23 may be attached to the front opening edge. 6 may be welded. These inner lenses 16 and 17 are the correction lens 7
Like the outer lens 8, it is achromatic.

In this way, inside the lamp body 2, the upper inner lens 16 and the lower inner lens 17, each of which has one side edge supported by the rear part of the lamp body and the other side edge supported by the front opening of the lamp body, The lens surface faces the inner surface of the correction lens 7 in an inclined state.
A prism element is formed in each of the upper inner lens 16 and the lower inner lens 17. At the center of the outer surface of the upper inner lens 16, that is, the surface facing the correction lens 7, there is a refractive prism element 2 cut into a circular belt shape.
4, 24, . . . are formed in a concentric pattern, and a large number of total reflection prism elements 25, 25, . ing. Also,
The lower inner lens 17 is also provided with refractive prism elements 26, 26, .
. . . total reflection prism elements 27, 27, . . . are respectively formed on the outer periphery of the inner surface thereof.

28 and 29 are bulbs, 28 is a turn lamp bulb, and 29 is a tail and stop lamp bulb, which are arranged inside the upper inner lens 16 and the lower inner lens 17, respectively, and are provided on the back covers 4 and 4. socket 3
0.30. The filaments 31 and 32 of each of the bulbs 28 and 29 serve as the refractive prism elements 24, 24, . . . or 26, 26, . . . of each inner lens 16 and 17.
It is arranged on a perpendicular line 33 or 34 passing perpendicularly through the center of rotation of the concentric circular pattern. The glass bulbs of the bulbs 28 and 29 have predetermined colors, for example, the turn lamp bulb 28 has a yellow-orange color, and the tail and stop lamp bulb 2 has a predetermined color.
9 is marked in red. Note that these colors are given to the glass bulb by filaments 31 and 32.
Instead, the bulb caps 35 and 36 with predetermined colors are used as filter means to color the light emitted from the bulb 2.
8 and 29 may be covered.

By the way, the opening angle formed by the lens surface of the upper inner lens 16 and the lens surface of the lower inner lens 17 is generally in the range of 80° to 100°, preferably about 90°. In the figure, α indicates the angle between the horizontal plane passing through the lamp axis x-x and the lens surface of the upper inner lens 16, and β indicates the angle between the horizontal plane and the lens surface of the lower inner lens 17. In the embodiment shown in FIG. 3, both angles α and β are approximately equal, each approximately 45°. In other words, the opening angle of both lens surfaces of the upper inner lens 16 and the lower inner lens 17 is approximately 90 degrees, and the inclination angle of each inner lens 16 and 17 is set to have such an opening angle. It is something.

In this way, the two inner lenses 16 and 1
The reason why it is desirable that the opening angle of 7 is within the above angle range is to improve the efficiency of light emission display on the lens surface of the outer lens 8, that is, the light from the bulb 28 or 29 passes through the inner lens 16 or 17, and is further corrected. This is done by taking into consideration the effect of irradiating the outer lens 8 through the lens 7 and the depth shape of the lamp body 2. In other words, if the opening angle of both inner lenses, that is, the sum of α angle and β angle, is significantly smaller than 90°, the position that supports one side edge of both inner lenses will move toward the inner back of lamp body 2. The inner lens 16 or 1 must be in an extended position, which naturally increases the depth of the lamp body.
The incident angle of the light irradiated toward the inner surface of the correction lens 7 from 7 becomes larger and is reflected by the inner surface, and conversely, the opening angle becomes larger than 90°. Being significantly enlarged means that the position supporting one side edge of both inner lenses will be closer to the front opening 5 of lamp body 2, and the inner surface of correction lens 7 will be illuminated from both inner lenses. The light from the bulb 28 or 29 is not irradiated onto the inner surface of the correction lens 7 in an upwardly or downwardly biased range.
Therefore, the light emitting range of the lens surface of the outer lens 8 is also shifted upward or downward, and the light emitting display area becomes smaller.

According to the rear marker light 1 configured as described above, the outer lens 8, the correction lens 7, and each inner lens 16, 17 are all achromatic, so when the bulbs 28 and 29 are not lit, the outer lens No signal color is visible on the lens surface of No. 8, making it possible to create a clear and clear feeling.

In addition, when the light is not lit, high-intensity sunlight 37, 37,
When ... is irradiated, the light passes through the outer lens 8 and correction lens 7 and reaches the total reflection prism elements 25 and 2 of the inner lens 16 or 17.
5,... or 27, 27,..., is reflected there, passes through the correction lens 7 again, and is irradiated onto the outer lens 8, but the sunlight is reflected by the achromatic lenses 7, 8 and 8. 16 or 17, the signal color of the bulb 28 or 29 provided inside the inner lens 16 or 17 is not displayed on the light emitting display window of the outer lens 8, and the same And the sun's rays 3
7, 37, . . . are the refractive prism elements 24, 24, . . . or 26, 2 of the inner lens 16 or 17.
6, ..., passes through this, and then enters each valve 2.
Even if irradiated to 8 or 29, this bulb 2
The sunlight that has entered the lens 8 or 29 is diffusely reflected inside the inner lens 16 or 17, and is no longer reflected.
There is almost no possibility that the light emitting display window of the outer lens 8 will be irradiated again, and in any case, the false lighting caused by the sunlight rays 37, 37... entering the inside of the lamp body 2. can be almost completely prevented.

When either one of the bulbs 28 or 29 is turned on, the predetermined color applied to the glass bulb of each bulb 28, 29 is displayed on the light emitting display window of the outer lens 8 by direct light from the bulb. Ru. For example, if the tail and stop lamp bulb 29 is lit now, then the bulb 2
The direct light 38, 38, . . . from the bulb 29 is accompanied by the color given to the glass bulb of the bulb 29, that is, red, and a part of it is transmitted to the refractive prism elements 24, 24, . . . in the upper inner lens 16. Therefore, it is refracted, and a part is totally reflected prism element 25,
25, . . . and are all emitted as parallel light beams in a direction substantially parallel to the direction of the perpendicular line 33 perpendicular to the lens surface of the upper inner lens 16, and these emitted light beams pass through the correction lens. 7 is irradiated with an incident angle i1, and then refracted in a direction parallel to the lamp axis x-x by correction prism elements 9, 9, . . . formed in this correction lens 7, The light becomes a parallel light beam and is irradiated onto the outer lens 8. And this outer lens 8
The irradiation causes substantially the entire display window of the outer lens to emit red light, and the fisheye lens elements 10 and 1 formed on the inner surface of the outer lens 8
0, . . ., the light is appropriately diffused in the vertical and horizontal directions and emitted. On the other hand, when the turn lamp bulb 28 is lit, the direct light 39, 39, . The refractive prism elements 26, 26 in the lower inner lens 17 with the color given to the sphere, that is, yellow-orange,
...or total reflection prism elements 27, 27, ...
An incident angle i is applied to almost the entire inner surface of the correction lens 7 through
2 and then through the prism elements 9, 9, . . . of the correction lens 7 to the outer lens 8.
This causes almost the entire surface of the light emitting display window of the outer lens 8 to emit yellow-orange light. Therefore, no matter which bulb is lit, the signal color will be emitted and displayed on the surface of the outer lens 8. Therefore, two bulbs are provided in the integrated lamp, and the lens surface of the outer lens 8 is connected to each lens surface. This means that the light emitting display surface can be doubled compared to the case where the display is divided into two parts dedicated to the bulb.

The fact that the light emitting display area for each signal color has been dramatically increased in this way not only makes it easier and more reliable to see the signal color light emitted, but also allows the direct light from the bulb to be diffused over the entire large light emitting display window. As a result, localized light emission can be suppressed, and unnecessary glare will not be caused to following vehicles.

Furthermore, since the light from the tail-and-stop lamp bulb 29 and the light from the turn lamp bulb 28 can be displayed in the same light-emitting display window, one side end of the outer lens 8 can be displayed. By attaching the lamp 1 to the side edge of the vehicle, the turn lamp signals can be clearly seen to the rear and sides of the vehicle, and the vehicle width can also be displayed accurately by lighting the tail lamp. The vehicle width can be displayed.

Furthermore, one side edge 18 and 22 of each inner lens
is supported at the rear of the interior of the lamp body 2, that is, in a narrow space where installation work is difficult. Moreover, each of the side edges 19 and 23 is made to protrude to the outside of the lamp body 2, and the protruding side edges are screwed or welded to the opening edge 6 of the lamp body 2. , the installation work can be made extremely easy.

In addition, in this embodiment shown in FIG.
The two inner lenses 16 and 17 are provided above and below the internal space of the lamp body 2, that is, the lens surfaces of both the inner lenses 16 and 17 are inclined in the vertical direction. It is also possible to set it as follows. To briefly describe the configuration in this case, FIG. 3C shows a longitudinal side view, but it can be understood as the configuration when viewed by replacing this figure with a cross-sectional plan view.

By the way, in such a vehicle signal lamp, it is necessary to control so that two bulbs are not turned on at the same time. Therefore, an example of the control circuit shown in FIG. 4 will be briefly explained.
This control circuit is constituted by a general integration circuit, and is particularly effective when the tail-and-stop lamp bulb 29 and the turn lamp bulb 28 are supplied with current for lighting at the same time. The lamp bulb 29 is configured to be controlled by a charging/discharging circuit so that the lighting of the bulb 29 is turned off. In figure A, S1 is the ON-OFF switch for the valve 29 for the tail-and-stop lamp, and S2 is the ON-OFF switch for the valve 28 for the turn lamp.
ON-OFF switches are shown, and these switches S
1. When S2 is turned on, a current with a voltage of 12V flows from the battery. D1 is switch S1
The cathode of the diode is connected to the tail-and-stop lamp valve 29 via the b contact RLb of the relay RL. Further, a diode D2 is connected to the ON-OFF switch S2 for the turn lamp, and resistors R1 and R2 are connected in series to the cathode of the diode D2, and the resistor R2 is further connected to the base of the transistor Tr1. A capacitor c is connected to a connecting terminal 40 between the resistors R1 and R2, and the other connecting end of the capacitor c is grounded. Further, a series circuit consisting of a variable resistor VR and a resistor R3 is connected to the connection terminal 41 between the resistor R2 and the base of the transistor Tr1, and the resistor R of this series circuit is connected to the connecting terminal 41 between the resistor R2 and the base of the transistor Tr1.
3 is grounded. Then, the charging circuit is formed by the resistor R1 and the capacitor c, and the capacitor c
A discharging circuit is constituted by resistors R2 and R3 and a variable resistor VR, and this charging circuit,
The current flowing from transistor Tr1 to the next circuit is controlled ON-OFF by the discharge circuit, and relay RL
The contact point RLb is turned on and off, thereby controlling the lighting of the bulb 29. The collector of the transistor Tr1 is connected to the connection terminal 42 on the cathode side of the diode D1, and the emitter is connected to the base of the transistor Tr2 via a resistor R4. The emitter of transistor Tr2 is grounded, and the collector is connected to relay RL. and relay RL and transistor Tr
A relay is connected from the connection terminal 43 between the collector of 2.
A diode D3 is connected in parallel with RL.

Each control operation of the control circuit configured in this way is explained below.
The ON conditions for ON-OFF switches S1 and S2 will be described separately.

(1) Tail and stop lamp switch S1
If only is turned on, switch S2 is turned off
Therefore, both transistors Tr1 and Tr2
OFF, therefore, current flows through the relay contact RLb without opening it, and the tail-and-stop lamp bulb 29 is lit.

(2) When only the turn lamp switch S2 is turned on, no current flows through the circuit connected to the tail-and-stop lamp bulb 29, so the bulb 29 is not lit.

(3) When both the turn lamp switch S2 and the tail and stop lamp switch S1 are turned on, the tail and stop lamp bulb 29 is turned off by the charging/discharging circuit described above, and only the turn lamp bulb is turned on. will be lit. That is, as shown in FIG. 4B, since the lighting current of the turn lamp bulb flows intermittently at a constant period through an appropriate flasher unit, the current signal is as shown at 44 in the same figure. Repeats ON and OFF. When such a continuation signal is received, the charging/discharging circuit Z changes the charging curves 46, 46, . 47,47,...
, and repeat the charging/discharging operation. During these charging curves 46, 46, . . ., current naturally flows through transistor Tr1, and therefore transistor Tr2 is turned on, so relay RL is turned on.
The b contact RLb opens and the current to the bulb 29 is cut off, preventing the bulb 29 from lighting up. If the charging voltage exceeds the minimum voltage required to turn on the transistor Tr1, the transistor Tr1 can remain on in this case as well, so that the bulb 29 can continue to be prevented from lighting up.

Embodiment 2 Figure 5 shows another embodiment of the vehicle signal lamp of the present invention.
1A, which, like the one shown in FIG. 3 mentioned above, was applied to a rear indicator light for automobiles.

The rear indicator light 1A in this embodiment has a so-called slant type lens surface in which one side of the outer lens is deviated rearward, and the inclination mode of each inner lens according to the slant, and the shape of the inner lens. The only difference is the manner in which the other side edge is supported and the like from that of the first embodiment described above. Therefore, only those different points will be explained, and the parts and members that are not different from those of the first embodiment will be given the same reference numerals as those of the first embodiment, and the explanation will be omitted.

As described above, the outer lens 48 of the rear marker lamp in this embodiment has its upper part deviated rearward so as to be inclined by θ degrees, and the correction lens 49 is arranged so as to be parallel to the lens surface of the outer lens 48. It is also tilted by θ°. The inclinations of the inner lenses 16 and 17, that is, the inclination angles with respect to the lamp axis XX, are set in accordance with the inclinations of the outer lens 48 and the correction lens 49. That is, the lens surface of the upper inner lens 16 is inclined at an angle of about 45 degrees with respect to a plane passing through the perpendicular line Y-Y, which intersects perpendicularly with the lens surfaces of the outer lens 48 and the correction lens 49, and the lower inner lens 17 Similarly, the lens surface of
-Y is inclined at an angle of approximately 45° with respect to the plane passing through Y, and thereby the opening angle formed by the lens surface of the upper outer lens 16 and the lens surface of the lower inner lens 17 is adjusted as described above. As in Example 1, the angle is approximately 90°. This means that the respective opening angles α and β of the inner lenses 16 and 17 with respect to the horizontal plane passing through the lamp axis XX are not equal. In other words, the aperture α formed by the horizontal plane passing through the lamp axis XX and the lens surface of the upper inner lens 16 is made larger than the aperture angle β formed by the horizontal plane and the lens surface of the lower inner lens 17. There is. This is outer lens 48
In response to the fact that the upper parts of the and correction lenses 49 are slanted backward, the lens surfaces of the respective lenses are turned upward by θ°, and the lens surfaces of both the inner lenses 16 and 17 are also turned upward by θ°. This means that each angle was moved upward by θ° accordingly. In this way, it is the upper inner lens 1 that also makes the inner lenses 16 and 17 face upward.
An incident angle i1 of the light 50 emitted in a direction perpendicular to the lens surface of the lens 6 and incident on the inner surface of the correction lens 49;
This is to make the incident angle i2 of the light 51 emitted in a direction perpendicular to the lens surface of the lower inner lens 17 and the inner surface of the correction lens 49 equal to each other. This is because if the incident angles i1 and i2 of the two lights 50 and 51 are different, the correction lens 49
control of light, that is, the upper inner lens 1
6 or the lower inner lens 17, it is extremely difficult to control the light to be emitted in the same direction in a predetermined direction, regardless of which direction the light is incident. Further, in this embodiment, the outer lens 48, the correction lens 49, the other side edges 19 and 23 of each inner lens, and the lower wall 52 of the lamp body 2 are all attached to the rim 53.

Embodiment 3 Figure 6 shows the third embodiment of the vehicle signal lamp of the present invention.
This shows 1B. This embodiment 1B is also applied to a rear marker light for an automobile, similar to the embodiment 1 shown in FIG. 3 described above. In this embodiment 1B, only the outer lens and the correction lens are different from those in the first embodiment, and other parts are the same as those in the first embodiment. The description will be omitted with reference numeral .

In the first embodiment 1 shown in FIG. 3 described above, the fisheye lens elements 10, 10, . However, in the third embodiment 1B, this diffusion function is provided separately to the outer lens and the correction lens. That is, on the inner surface of the outer lens 54, that is, the surface facing the correction lens 55, a large number of cylindrical lenses 56, 56, .
The light emitted from the correction lens 55 toward the outer lens 54 by the lenses 6, 56, . Further, on the inner surface of the correction lens 55, that is, the surface facing the inner lenses 16 and 17, a large number of cylindrical lenses 57, 57, . The light emitted from the lens 55 is given diffusivity in the vertical direction.

In this way, due to the cylindrical lenses 56, 56, . . . of the outer lens 54 and the cylindrical lenses 57, 57, . given the diffusivity to. However, in this way, in front of the correction prism elements 9, 9, .
6,... are arranged, the correction prism elements 9,
The patterns 9, . . . are not clearly visible and are suitable for design.

Effects of the Invention As is clear from the above description, the inventive vehicle signal light has an achromatic lens surface, and one side edge of each surface is supported at approximately the middle of the rear inside the lamp body. It has two inner lenses whose other side edge is supported near the front opening of the lamp body and a prism element is formed on the lens surface, and a light source is provided inside each inner lens, and the light source and the inner A filter means for coloring the light from the light source is provided between the lens and the front opening of the lamp body. It is characterized by having an achromatic correction lens formed with a prism element and an achromatic outer lens positioned in front of the correction lens, so that no signal can be detected from outside the lamp when the lamp is not lit. The color is not visible at all, creating a clean and beautiful design.
Further, even if sunlight enters the lamp, these signal colors will not be displayed as pseudo-luminous light, and erroneous signal visibility can be completely prevented.
In other words, the function when not lit means that the signal color does not appear at all except when it is truly lit, and this makes the visibility as a signal light extremely accurate. .

In addition, if the light emission display window of this lamp, that is, the entire outer surface of the outer lens, is used as the light emission display window for the common signal color from the two bulbs, a dedicated outer lens may be provided for each bulb. Since the space can be made significantly larger than the space on the outer surface of the outer lens, the light emitting display area of the signal color can be dramatically increased, and the visibility can be made even clearer and more accurate. Furthermore, because the light emitting display area has been increased, the light from the bulb can be appropriately diffused into the display window, so it does not cause excessive glare to following vehicles, etc., improving visibility. It can be made very good.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a conventional vehicular signal lamp attached to the rear of an automobile, Fig. 2 shows details of the vehicular signal lamp shown in Fig. 1, and A is a longitudinal side view. , B is an enlarged longitudinal sectional side view of the main parts, FIG. 3 shows the first embodiment of the vehicle signal lamp of the present invention, A is a front view with a part of the lens cut away, and B is a front view showing the lens with a part cut away. Figure A is a cross-sectional view taken along the line B-B in Figure A, C is an enlarged vertical side view taken along the line C-C in Figure A, and Figure 4 is a stop lamp in the vehicle signal lamp shown in Figure 3. An example of a lights-off control circuit is shown, A is a circuit diagram, B is a time chart showing charging and discharging operations in the circuit,
FIG. 5 is a longitudinal sectional side view showing a second embodiment of the vehicular signal lamp of the present invention, and FIG. 6 is a longitudinal sectional view of a third embodiment of the vehicular signal lamp of the invention. Explanation of symbols, 2... Lamp body, 7... Correction lens, 8... Outer lens, 9... Correction prism element, 16... Inner lens, 17... Inner lens, 24... Prism element, 25...
Prism element, 26... Prism element, 27...
Prism element, 31... light source, 32... light source, 5
6...Outer lens, 57...Correction lens.

Claims (1)

[Scope of utility model registration request] It has achromatic lens surfaces, one side edge of each surface is supported near the rearward middle of the lamp body, and the other side edge is supported near the front opening of the lamp body, and a prism element is formed on the lens surface. A light source is provided inside each inner lens, and a filter means for coloring the light from the light source is provided between the light source and the inner lens. includes an achromatic correction lens formed with a correction prism element that directs the light emitted from the light source through the inner lens in a direction substantially parallel to the lamp axis, and an achromatic correction lens located in front of the correction lens. A vehicle signal lamp characterized by being coated with an achromatic outer lens.