JPS5814002B2 - Vehicle lights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle lamp used as a display lamp, a signal lamp, etc.

In this type of lamp, a lamp body is disposed within a lamp chamber defined by a lamp body and a front lens, and a reflector is used to convert the light from the lamp body into substantially parallel light rays in the forward direction.

For example, in the conventional example shown in FIG.
The inner surface of the back is a paraboloid of revolution reflector b, and the lamp body c
This makes the light into a substantially parallel light beam in the direction of the front lens d.

However, in the light fixture shown in the figure, the light body c is attached to a socket g in a socket holder f that is integrally formed with the back cover e.
It can be detachably attached via the lamp body c.
This is accomplished by inserting the reflector b into the lamp body a through an insertion hole h provided at the rear thereof.

This lamp has an insertion hole h for the lamp body in the effective reflection surface of the reflector b, so when viewed from the lens light emitting surface, the effective luminous flux of the reflected light near the optical axis, that is, the horizontal line at the center of the lamp, decreases. , and the luminous intensity of the light distribution will decrease.

In other words, the effective light in the portion A shown in the figure is reduced.

In addition, in this lamp, the lamp body c is inserted from the back side of the mirror body a toward the front in the direction of the arrow B along the horizontal axis Y-Y line in the figure, so the depth H of the lamp body a must be made considerably large. Therefore, installation space is required deep inside the vehicle body.

Therefore, for example, it is necessary to take up a large space for the lamp in the trunk, which is disadvantageous.

Therefore, in an attempt to reduce the depth H, the depth H of the reflecting surface
If a reflector with a long focal length is used in order to make the focal length shallow, the solid angle spanned by the reflector will decrease, and the effective luminous flux will decrease.

In order to solve the above problems, a lamp as shown in FIG. 2 has been proposed.

In this case, a hole h' is formed in the lower part of the lamp body a', and a lamp body c' is inserted through the hole h'.

Therefore, the lamp body c' has a vertical axis X that is perpendicular to the horizontal axis Y-Y line
- It is passed through the hole h' along the X-ray and is then placed in the lamp chamber.

In this way, there is no through hole on the back as shown in Figure 1, so the reflector will not become ineffective due to the through hole, improving the reflection efficiency and solving space problems due to the depth of the lamp. Does not occur.

However, in this configuration, the lamp body c' and its holder f' cross b' and d' between the reflector b' and the front lens d', so that the base of the lamp c' and the holder f'', the reflected light is blocked and the part A' in the figure becomes a shadow, the effective luminous flux of the reflected light below the horizontal line of the lamp is reduced, the light distribution luminous intensity is reduced, and this becomes a factor that reduces the function of the lamp.

In order to overcome the drawbacks shown in FIG. 2, a lamp shown in FIG. 3 has been proposed.

In this case, a Fresnel cut portion i'' is formed on the lens surface corresponding to the above-mentioned shadow portion (portion A').

In this way, the Fresnel cut part i'' can emit the direct light from the lamp c'' as a parallel beam to the front, but the reflected light from the reflector b'' cannot be used, so the lens light emitting surface is uniform. However, it is not a fundamental solution.

Moreover, since the Fresnel cut portion i'' on the lens surface needs to be molded separately from other prism parts, the molding of the lamp and lens takes more man-hours, becomes complicated, and tends to be expensive.

It is an object of the present invention to solve the above-mentioned problems, improve the utilization efficiency of the reflector of a lamp, and provide a compact lamp at low cost that can fully satisfy lamp functions such as light distribution function. It is something.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 6.

FIG. 4 shows an example in which the present invention is applied to a signal light for automobiles, which includes a lamp body 3 that supports a lamp body 2 via a holder 1, and a lamp chamber 4 defined together with the lamp body 3. The lamp body 3 is provided with a first reflector 61 that directs the light from the lamp body 2 forward into substantially parallel light rays.

In the present invention: A second reflector 62 is disposed between the holder 1 and the front lens 5 to reflect the direct light from the lamp body 2 forward as approximately parallel light, and a second reflector 62 is provided between the holder 1 and the front lens 5. A sub-reflector 63 is provided to make the light incident on the second reflector 62, and a back cover 7 is attached to the bottom of the lamp body so that the lamp body holding axis of the holder 1 is approximately perpendicular to the horizontal axis of the lamp body.

Here, the horizontal axis is the Y-Y line in the figure, which corresponds to the axis of symmetry of the first reflector 61 which is in the shape of a paraboloid of revolution, which will be described later. The direction in which the light body extends is the horizontal direction, and the lamp body holding axis of the holder 1 is approximately perpendicular to the horizontal direction.

The first and second reflectors 61, 62 are both formed integrally with the lamp body 3, and each reflecting surface 61',
62' is formed by plating metal such as chrome or pasting aluminum foil.

The first reflector 61 has the shape of a paraboloid of revolution, similar to known ones of this type, and the light source of the lamp body 2 is arranged near its focal point, so that the reflected light from the first reflector 61 is directed forward. It emits as a parallel ray of light.

The second reflector 62 has a parabolic or spherical shape, and emits direct light from the lamp body 2 and reflected light from the sub-reflector forward as substantially parallel light rays.

The holder 1 is integrally formed with the back cover 7,
One end of the back cover 7 fits into the groove 31 of the mirror body 3, and the other end is fixed to the mirror body 3 by appropriate means.

As the fixing means, screws or engagement using engagement claws can be used.

A socket 11 is press-fitted into the holder 1, and a base 21 of the lamp body 2 is inserted and held in the socket 11.

This holder 1 is inserted into the lamp chamber 4 from below in the figure, so that its lamp holding axis (X-X axis) is aligned with the horizontal axis (Y-Y axis).
It is configured to be at right angles to.

The second reflector 62 compensates for the reflected light from the first reflector 61 being blocked by the holder 1, etc., and is therefore disposed at a position corresponding to the dark portion caused by the holder 1, etc.

That is, the area indicated by the fine dots in FIG. 5 is the range of the second reflector 62, and the light is reflected forward as a parallel light beam by this reflector 62.

The sub-reflector 63 is provided on the inner surface of the lamp body 3 at a position facing the second reflector 62, and is provided on the inner surface of the lamp body 3.
Direct light from the mirror is reflected toward the second reflector 62.

In this way, the light reflected by the sub-reflector 63 is reflected again by the second reflector 62 and emitted forward as a substantially parallel light beam, and is emitted to the lens portion where the dark portion was supposed to be caused by the holder 1 etc. The amount of light emitted can be increased.

In the example shown in FIG. 4, the sub-reflector 63 is arranged separately from the lamp body 3.
It can also be provided integrally with.

An example is shown in FIG.

In addition, in FIG. 6, reference numeral 8 indicates a punched hole for molding the sub-reflector 63.

As described above, the vehicle lamp of the present invention includes a lamp body having a first reflector on the inner surface, a front lens disposed in the opening of the lamp body corresponding to the first reflector, and a front lens disposed in the opening of the lamp body corresponding to the first reflector. In a vehicle lamp having a striking body disposed at a focal point position, the lamp body is assembled to the bottom of the lamp body through a holder and a back cover so that the lamp holding shaft is substantially perpendicular to the horizontal axis of the lamp body. and a second reflector that reflects direct light from the light body forward is disposed between the holder of the light body and the front lens, and a second reflector that reflects the direct light from the light body to the second reflector. Since we installed a sub-reflector to allow the light to enter, the direct light from the lamp body is reflected by the second reflector, and the light from the lamp body is reflected onto the lens surface, which was supposed to be a dark zone due to the lamp holder and base. The total amount of light reflected by the sub-reflector and the second reflector enters the lens, and as a result, the entire surface of the lens emits light almost uniformly, and visibility can be improved by increasing the amount of light.

[Brief explanation of the drawing]

1 to 3 are side sectional views showing conventional examples. FIG. 4 is a side sectional view showing an embodiment of the vehicle lamp of the present invention, and FIG. 5 is a partial front view thereof. FIG. 6 is a partial side sectional view showing a modification of FIG. 4. DESCRIPTION OF SYMBOLS 1... Holder, 2... Lamp body, 3... Lamp body, 4... Lamp chamber, 5... Front lens, 61... First reflector, 62... Second reflector, 63...
sub-reflector.

Claims (1)

[Claims] 1. A lamp body having a first reflector on the inner surface, a front lens disposed at the front opening of the lamp body corresponding to the first reflector, and a lamp body disposed at the focal point of the first reflector. In vehicle lighting equipment,
The lamp body is assembled to the bottom of the lamp body through the holder and the bank cover so that the lamp body holding axis is approximately perpendicular to the horizontal axis of the lamp body, and the lamp body is mounted between the holder of the lamp body and the front lens. A second reflector that reflects direct light from the lamp body toward the front is disposed, and a sub-reflector is disposed that makes direct light from the lamp body enter the second reflector, and the second reflector and the A vehicular lamp characterized in that the light reflected by the sub-reflector and the second reflector is made to enter a front lens portion in front of the holder.