JPS5882401A - Lamp apparatus for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle lamp such as a rear combination lamp, and more particularly to a vehicle lamp with an improved lens portion.

In general, as an example of a vehicle lamp, a Norya combination lamp, manufactured by Pu1 Co., Ltd., as shown in Figs. 1 to 3, is used.
The tail/stop lamp section 2 and the turn signal lamp section 3 are integrated into one unit, and its specific structure includes a tail/stop lamp pulp 4 and the like inside, and a paraboloid of revolution reflecting light. It consists of a lamp case 6 having a mirror part 5, and a lens 7 located in the opening part Wi of the lamp case 6. According to this type, the beam irradiated from the nude tube lamp bulb 4 is reflected by the reflector portion 5 of the lamp case 6, becomes a substantially parallel beam 9, and is transmitted through the lens 7. It is sometimes spread.

By the way, in this type of rear combination lamp, during the daytime, external light is irradiated onto the lens 7, so the external light transmitted through the lens 7 is reflected by the reflector portion 5 of the lamp case 6 and then reflected again. The light may pass through the lens 7, causing the surface of the lens 7 to shine. For this reason, there is a risk that passengers in the following vehicle may misunderstand the situation as if the tail stop lamp section 2 were turned on.

Therefore, conventionally, in order to prevent such misidentification, as shown in FIGS. 2 and 3, the lens I is replaced with a single clear lens 8 having a predetermined transmittance, and this Adhesive 10 is placed inside the four parts 9 formed on a part of the clear lens 8.
A smoke lens 11 (a lens with lower transmittance than a clear lens of the same color) with a substantially U-shaped cross section is fitted and fixed through the lens. There is a method in which the amount of light transmitted from this polymerized portion is reduced by making it lower than other portions. According to this, even if the lens 7 is irradiated with external light during the daytime, the amount of external light that passes through the lens 7 itself is reduced by the presence of the overlapping portion, and the reflected light reflected by the reflecting mirror portion 5 This means that almost no light is transmitted through the polymerized portion, so that the outer surface of the smoke lens 11 does not shine due to external light. On the other hand, when the tail/stop lamp part 2 is lit, the strong light from the bulb 4 is transmitted even though the amount of light transmitted from the back surface of the lens 7 is lower than that of other parts.
If the entire lens 7 is shining, it can be recognized that the tail stop lamp part 2 is lit, and if it looks bright except for the smoked lens 11 part of the lens 7, it can be recognized that the outside light is shining. Because of this, it can be recognized that only the tail stop lamp section 2 is not lit, and the following vehicles will not be mistaken about the flashing state of the tail stop lamp section 2.

However, in such a conventional vehicle lamp, the lens 1 is a separately molded smoke lens 11fI-adhesively fixed in the recess 9 of the clear lens 8, so in particular, Adhesive 1o on the bottom surface of the four parts 9
As a result, the light from the pulp 4 is blocked, and the amount of light transmitted from the smoke lens 11 portion itself when the tail strut lamp portion 2 is lit is reduced. As a result, the illumination effect of the tail/stop lamp section 2 is degraded, the blinking of the lamp at the smoke lens 11 section becomes uncertain, and the lighting condition at the smoke lens 11 section becomes uneven. It looks bad.

The present invention has been made based on the above-mentioned viewpoints, and its purpose is to provide a vehicle lamp that ensures the illumination effect of the lamp while also making it possible to reliably recognize the blinking state of the lamp. Our goal is to provide the following.

The gist of the present invention is to provide a vehicle lamp in which a laminated molded portion of lenses having different transmittances is formed on at least a portion of the lens.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

The first embodiment shown in FIGS. 4 and 5 is an example in which the present invention is applied to a rear combination lamp 1. The basic structure of the tail/stop lamp part 20 of this rear combination lamp 1 is that It consists of a lamp case 6 having a stop lamp bulb 4 and a paraboloid of revolution reflecting mirror portion 5, and a lens 7 covering an opening of the lamp case 6.

In this embodiment, the lens 7 includes a lamp base 6.
For example, a red clear lens 8 with a transmission weight of about 50% covers the opening, and a blackened smoke lens 11 with a vorticity of about 50% (for example, (a lens made of a clear lens material mixed with black material particles, a lens with a translucent black coating applied to the front or back surface of the clear lens, etc.), and the central outer surface of the clear lens 8 and It continues smoothly with the outer surface of the smoke lens 11, and the outer surface of the lens 1 is formed flat. Therefore, the lens 7 is configured as a clear portion 19 with a single clear lens 8 in the central portion, and as a laminated molded portion 20 of the clear lens 8 and the smoke lens 11 in the upper and lower portions.

As an example of a method for molding the lens 7, first, as shown in FIG.
A molding material is injected to form a clear lens 8, and then, as shown in FIG. 6(b), a mold consisting of an upper mold 24 and a lower mold n forming a cavity corresponding to the lens 7 is formed. The above-mentioned clear lens 8 is installed in M2, and the smoke lens 11 is formed by injecting the smoke lens 11 molding material from the injection port 26 into the gap formed between the clear lens 8 and the mold M2. It is something to be molded. As a result, Figure 6 (C
), the smoke lens 11 is laminated on the outer surface of the clear lens 8 to obtain the yttz lens 7.

Therefore, according to the vehicle lamp according to this embodiment, the shape of the lens 7 is determined by the mold, and since the outer surface of the lens 7 is flat, there is a gap between the clear lens 8 and the smoke lens 11. There will be no steps or gaps, and dust will not adhere to the steps.

In addition, since the laminated molded part of the lens described above is obtained by laminating the smoke lens 11 on the outer surface of the clear lens 8 without using an adhesive with poor transmittance, light can pass through this laminated molded part. The light is transmitted according to a predetermined transmittance, and the light from the bulb 4 and the like is not blocked by the laminated molded portion 20. At this time, the transmittance of this laminated molded part is about 10% due to the influence of the transmittance of the clear lens 8 and the smoke lens 11, which is half that of the central part of the lens 7.

Therefore, for example, during the daytime when external light is irradiating the surface of the lens 7, the amount of external light passing through the lens 7t is reduced due to the presence of the laminated molded part 20, and the external light transmitted through the lens I is reflected on the reflecting mirror part 5. Even if it is reflected by the laminate molding part and goes towards the laminate molding part, the transmittance is low in this laminate molding part, so
Reflected light from a small amount of external light is hardly transmitted. As a result, the outer surface of the laminated molded part does not shine due to external light. In this case, since the clear portion 19 of the lens I has a high transmittance, reflected light from external light may be transmitted therethrough, resulting in a bright appearance.

On the other hand, when the tail stop lamp section 2 is lit, the light from the bulb 4 is irradiated onto the back surface of the lens 7. At this time, the clear part 19 of the lens 7 has a high transmittance and becomes ψ, so much of the light from the bulb 4 is transmitted through this part, making the clear part 19 bright and shiny. Also, although the laminated molded part 20 has a lower transmittance than the clear part 19, the strong light from the bulb 4 passes through the entire area of this laminated molded part, so the outer surface of the laminated molded part has a certain degree of transmittance. The entire surface is uniformly soft and shines with a luminous intensity of . As a result, the laminated molded part flashes reliably in response to the flashing of the tail stop lamp part 20, so the occupants of the following vehicle can see that if the entire lens 7 is shining, the tail stop lamp part 2 will blink. If a part of the lens 7 is slightly shining, it is possible to confirm that the tail/stop lamp part 2 is not lit, and that it is due to external light. .

Furthermore, in the above embodiment, the lens T has a clear portion 19.
Since it is equipped with clear section 1 when driving at night etc.
9 shines brightly, and the amount of transmitted light necessary for illuminating the lamp can be effectively secured in the clear section 19.

Next, a second embodiment shown in FIGS. 7 and 8 will be described.

In this embodiment, unlike the first embodiment, the lens 1
7Ifi, consisting of a clear lens 8 having a flat outer surface, and several smoke lenses 11 stacked on the back side of the clear lens 8 and extending in the left-right direction, and a clear part 19, and a clear lens and a smoke lens. The laminated aima are arranged alternately along the direction of the hand.

In this embodiment, the same functions and effects as in the first embodiment are achieved, and since the smoke lens 11 is laminated on the back surface of the clear lens 8, the smoke lens 11 is not directly exposed to the outer surface of the lens 17. , it is possible to make the outer surface of the lens 17 clear. In this embodiment, the transmittance of the several smoke lenses 11 may be varied.

The third embodiment shown in FIG. 9 is an application of the present invention to a lamp of a different type from the above-mentioned first and second embodiments.
consists of a rectangular parallelepiped lamp case 6 with a pulp 4 inside, an outer lens 27 that covers the opening of the lamp case 6, and an outer lens I arranged inside the outer lens 27 that converts the light from the pulp 4 into parallel light. Inner lens 27a that leads to ! : The outer lens 27C of the second embodiment may be partially provided with a laminated molded part of the lens. In this case, in order to ensure the illumination effect of the lamp to some extent, it is desirable to make at least a portion of the smoke layer of the laminated molded portion 20 of the lens thin. Further, the arrangement of the laminated molded portion 20 of the lens and the number of laminated layers are not limited to those shown in each of the above embodiments, and the design may be changed as appropriate. Furthermore, regarding the lenses formed in the laminated molded part 20, it is of course possible to combine clear lenses 8 and smoke lenses 11 of different colors and transmittances. It is sufficient to set the transmittance at a low value within a range that allows confirmation of blinking of the lamp.

Furthermore, in each of the above embodiments, it goes without saying that the present invention can be applied to the tail e-stop lamp of the rear combination lamp 1, and the present invention can be applied not only to a single lens structure but also to a structure in which two lenses are spaced apart. It may also be applied to a so-called double lens structure attached with a double lens structure.

As explained above, according to the vehicle lamp according to the present invention, since the laminated molded portion of lenses with different transmittances is formed in at least a part of the lens, the laminated molded portion with low transmittance is not affected by external light. Although the lamp does not shine, the lamp light is transmitted uniformly over the entire area of the lens laminated molded part, so that the illumination effect of the lamp can be ensured, and the blinking state of the lamp can be confirmed reliably. Furthermore, since the lens is molded as one lens during molding, it is possible to prevent dust and the like from adhering to the clear lens and the smoke lens.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automobile seen diagonally from the rear, showing an example of a conventional vehicle lighting device, Fig. 2 is an enlarged front view of section A in Fig. 1, and Fig. 3 is a sectional view taken along line 11 in Fig. 2. , FIG. 4 is a front view similar to FIG. 2 showing the first embodiment of the vehicle lamp according to the present invention;
u (a) t(b) t(C) are explanatory diagrams showing the method of molding the lens shown in FIG. 6(C) is an explanatory sectional view showing the lens after molding is completed, and FIG. 7 is similar to FIG. 4 showing the second embodiment of the vehicle lamp according to the present invention. 8 is a sectional view taken along line 11 in FIG. 2, and FIG. 9 is a sectional view similar to FIG. 8 showing a third embodiment of the vehicle lamp according to the present invention. 11...Smoke lens 19...Clear club prisoner/
...Laminated molding part of lens Patent applicant: Nissan Motor Co., Ltd. Fig. 1-5, Fig. 7, Fig. 7, 8114, JP-A-58-82401 (6) Fig. 19

Claims (1)

[Claims] 1) A vehicle lamp comprising a lamp case fixed to the vehicle body and provided with pulp inside, and a lens covering an opening of the lamp case, wherein the lens is at least partially transparent. A vehicle lamp comprising a laminated molded portion of lenses having different ratios. 2) The above-mentioned lens lamination molding part is located at the opening 1 of the lamp case.
1. Consisting of a clear lens and a smoke lens layered on a part of the surface of this clear lens? A vehicle lamp according to claim 1, characterized in that: