JPH0446321Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is applied to a vehicle that has a deep light chamber space in which a bulb is installed and a light chamber space that is small in depth and cannot be reached by the bulb light. Regarding lighting equipment.

[Prior art]

Among automotive lighting equipment, for example, side lamps such as turn signal lamps and clearance lamps have a recent trend of being horizontally long and low in vertical width.
In addition, L-shaped tires that extend around the sides of the vehicle are becoming mainstream.

6 and 7 show a horizontal cross-sectional view and a vertical cross-sectional view of a conventional turn signal lamp. The lamp is approximately L-shaped when viewed from above, and has a depth at which the bulb 4 is installed. A certain light room space 3
A light chamber space 3b with a small depth is formed adjacent to a. Reference numeral 2 is a lamp body, and reference numeral 6 is a front lens.A region 6a of the front lens 6 facing the light chamber space 3a is a light emitting region that emits light by bulb light when the lamp is lit.
The area 6b facing the area 6b is a non-light emitting area where the bulb light does not reach and does not emit light when the lamp is lit.

[Problem that the invention attempts to solve]

In the turn signal lamp described above, the depth of the light chamber space 3b where the bulb light does not reach is smaller than the depth of the light chamber space 3a in which the bulb 4 is installed. Therefore, when the lamp is viewed from the front in the daytime or when it is not lit, the lack of depth in the non-light-emitting region 6b is noticeable, and the difference in depth from the light-emitting region 6a creates a problem in that the lamp looks unsightly.

As a result of examining the prior art, the inventors and others found that the inner circumferential surface 2b of the lamp body 2 forming the lamp chamber space 3b is as follows.
It was found that the vertical cross section was a planar shape or a curved surface shape convex toward the front lens side as shown in FIG. 7, and that this was the cause of the appearance of no depth.
That is, when the inner circumferential surface of the lamp body has _a curved shape convex to the front as shown in _FIG . reflect the image. To the viewer, the area indicated by the symbol A appears bright due to the reflected light _l2 , and this bright area A is wider than the area B, which is a shadow where the reflected light of sunlight does not reach. Therefore, the depth of the light chamber space 3b appears to be even smaller.

The present invention was devised in view of the problems of the prior art described above, and its purpose is to provide a sense of depth to the non-light emitting area of a vehicular lamp that appears to have no depth.

[Means to solve the problem]

In order to achieve the above object, the vehicle lamp according to the present invention has a deep light chamber space in which a bulb is installed and a second light chamber space with a small depth where the bulb light does not reach. In the lamp, a longitudinal section of an inner circumferential surface area of the lamp body forming the second lamp chamber space has a curved shape with the rear side of the lamp convex.

[Effect]

The longitudinal section of the inner circumferential surface area of the lamp body forming the second lamp chamber space has a curved shape convex to the back side,
Sunlight enters the second lamp chamber space inside the lamp from diagonally above. The sunlight that enters the lamp,
This reflected light is reflected only in a part of the area below the inner peripheral surface of the lamp body, that is, the area of the reflecting surface, which is the inner peripheral surface of the lamp body that reflects sunlight, is smaller than that of the conventional example, and this reflected light makes it brighter. The visible area is smaller than before. On the contrary, it is not affected by light reflected by sunlight on the inner peripheral surface of the lamp body, and the shadow area is expanded compared to the conventional example, increasing the sense of depth in the second lamp chamber space area.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

Figures 1 to 5 show one embodiment of the present invention, in which Figure 1 is a front view of the front turn signal lamp, Figure 2 is a horizontal cross-sectional view thereof, and Figure 3 is a front view of the front turn signal lamp.
4 is an enlarged sectional view taken along the line shown in FIG. 1, and FIG. 5 is a perspective view of the lamp body in the dummy region having a small depth.

In these figures, reference numeral 10 denotes a lamp body having a horizontally long rectangular shape, and a seal groove 12 is provided around the front opening of the lamp body 10, and a seal leg 22 of a front lens 20 is assembled into this seal groove 12. It is integrated as a lamp.

The lamp body 10 includes a relatively deep container-shaped lamp body portion 10a into which the bulb 14 is attached;
It has a container shape that is considerably shallower than the lamp body 10a, and consists of a lamp body portion 10b that is curved backward toward the right end. The front lens 20 also has a curved shape that matches the shape of the front opening of the lamp body 10, and a lamp chamber space 11 extending in a substantially L-shape is formed between the lamp body 10 and the front lens 20. has been done. The lamp chamber space 11 is a deep lamp chamber space 11a inside the lamp body part 10a.
and a light chamber space 11b with a small depth within the lamp body portion 10b. The front lens region 20a of the light chamber space 11a is a light emitting region that emits light by the light from the bulb 14, but the light from the bulb 14 does not reach the light chamber space 11b, and the front lens region facing this light chamber space 11b 20b is a non-light-emitting region, and this region 20b is a dummy region.

The inner circumferential surface of the lamp body portion 10a has a parabolic shape, and the surface thereof is processed to have a horizontally extending cylindrical convex surface, and a light reflecting surface _10a1 coated with an aluminum vapor-deposited film is formed here. . Note that reference numeral 16 is an amber-colored inner lens assembled to surround the bulb 14.

On the other hand, as shown in FIG. 4, the inner circumferential surface 10b ₁ of the lamp body part 10b forming the lamp chamber space 11b has an R surface whose vertical section is convex toward the back side of the lamp, and an aluminum vapor-deposited film is also applied here. is coated. The sunlight that has passed through the front lens 20 from the outside and entered the lamp chamber space 11b as shown by reference numeral _l3 in FIG.
It is reflected at the lower region of b ₁ and is transmitted through the area indicated by A ₁ of the front lens 20, as indicated by reference numeral l ₄ in FIG. When this lamp is viewed by a viewer, the area indicated by the symbol A ₁ appears to be shining, but the area A ₁ that is illuminated by this reflected light l ₄ is the 7th area.
Compared to the luminous range A in the conventional example shown in the figure, the width is overwhelmingly narrower in the vertical direction. In addition, the lamp body portion 10b and the front lens 20 are shaped to be inclined forward and downward compared to the conventional example, so that the area of the reflective surface area on which the sunlight _l3 is reflected is further narrowed. Also, the code B ₁ is
Reflection of sunlight on the inner peripheral surface of the lamp body _10b1
Indicates the area where l ₄ does not hit, that is, the area that becomes a shadow. This shadow area _B1 is expanded by the area where the sunlight is reflected, and as a result,
This non-light-emitting area 20b is similar to the conventional non-light-emitting area 6b.
(See Figure 6) It appears to have a sense of depth compared to the original.

Therefore, in the non-light-emitting region 20b, a sense of depth close to that of the deep light-emitting region 20a is obtained, the sense of unity as a lamp is enhanced, and the external appearance is good.

[Effect of idea]

As is clear from the above description, according to the vehicle lamp according to the present invention, the longitudinal section of the inner circumferential surface area of the lamp body forming the second light chamber space has a curved shape convex to the rear side, and The light beam enters the second lamp chamber space within the lamp from obliquely above. The sunlight that enters the lamp is reflected only in a part of the lower inner circumferential surface of the lamp body.In other words, the area of the reflecting surface, which is the inner circumferential surface of the lamp body that reflects sunlight, is smaller than that of conventional examples. It is small, and the area that appears bright due to this reflected light is smaller than in the past. vice versa,
It is not affected by sunlight reflected from the inner peripheral surface of the lamp body, and the shadow area is expanded compared to the conventional example. This increases the sense of depth in this second light chamber space area. Moreover, the difference in the sense of depth with the deep light emitting area is reduced, the sense of unity as a lamp is enhanced, and the external appearance is good.

[Brief explanation of drawings]

Fig. 1 is a front view of a turn signal lamp which is an embodiment of the present invention, and Fig. 2 shows the line shown in Fig. 1.
3 is a cross-sectional view taken along the line shown in FIG. 1.
4 is a sectional view along the line shown in FIG. 1, FIG. 5 is a perspective view of the lamp body in the dummy area, FIG. 6 is a horizontal sectional view of a conventional turn signal lamp, and FIG. The figure is a longitudinal cross-sectional view. 10...Lamp body, 14...Bulb, 10
a, 10b... Lamp body part, 10a ₁ ... Light reflecting surface, 10b ₁ ... Inner peripheral surface of lamp body part, 11...
...Light room space, 11a...Light room space with depth, 1
1b...Light room space without depth (second light room space).

Claims (1)

[Scope of utility model registration request] In a vehicle lamp having a deep light chamber space in which a bulb is installed and a small second light chamber space where the bulb light does not reach, an inner periphery of a lamp body forming the second light chamber space. A vehicular lamp characterized in that a longitudinal cross section of a surface area is curved so as to be convex toward the rear side of the lamp.