JP3271445B2 - Spot lamp lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot lamp lens for a spot lamp installed in a passenger compartment of a truck or a passenger car.

[0002]

2. Description of the Related Art Conventionally, in a vehicle such as a truck or a passenger car, a spot lamp 5 is provided on an overhead console 3 in addition to a room lamp 1 as shown in FIG. By doing so, for example, when driving at night, the map can be expanded and the route to the destination can be confirmed.

Conventionally, in order to achieve a design effect, a spot lamp lens (hereinafter referred to as a “lens”) of the spot lamp 5 is squeezed on the front surface or the entire back surface.
Alternatively, as shown in FIG. 5, the central portion 9 of the lens 7 is not apertured, and the aperture 13 is uniformly applied to the entire periphery 11 thereof. Here, the term "aperture" refers to a rough surface having irregularities of several tens of microns to one hundred and several tens of microns having an effect of irregularly reflecting light from a light source, and usually, a die is etched with a solvent. Thereafter, a lens is formed by pouring a resin material into a mold and cooling it.

[0004]

However, a lens which is fully apertured has a drawback that the illuminance is reduced as compared with a lens without aperture, and the central portion 9 as shown in FIG. In the case of the lens 7 in which the aperture 13 is uniformly applied to the peripheral portion 11 except for the boundary portion 15, the boundary 15 is formed between the central portion 9 and the peripheral portion 11, so that when the target such as a map is irradiated, the boundary 15 is mapped. It was pointed out that there was something wrong with the light distribution.

The present invention has been devised in view of such circumstances, and does not cause a decrease in illuminance when a target such as a map is irradiated.
It is another object of the present invention to provide a spot lamp lens for a vehicle in which the conventional light distribution is eliminated and the spot lamp is improved in marketability.

[0006]

In order to achieve the above object, the invention according to claim 1 is directed to an overhead in a vehicle cabin.
Light source mounted in the housing provided on the console
Correspondingly, on the decorative plate on the surface that covers the housing
A spot lamp lens to be attached.
And from the center to the periphery
Apply a lot of squeezing sequentially, and gradually move from the center to the periphery.
It is characterized by gradually lowering the illuminance of the pot lamp
You.

[0007]

According to the spot lamp equipped with the lens according to the present invention, the light emitted from the light source of the spot lamp is radiated to the driver's seat and the passenger's seat through the respective lenses as in the prior art. The light emitted from the part illuminates the target object such as a map brightest, and the light emitted through the peripheral part gradually decreases in illuminance as the aperture increases.

[0008] Then, the lens according to the present invention, because there is no conventional such boundary between the center portion and the peripheral portion, when irradiated with target such as a map, and no boundary to user light distribution Become.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a spotlight according to an embodiment of the present invention.
FIG. 2 is a plan view of a spot lamp equipped with a pump lens (hereinafter, referred to as a “lens”) . FIG. 2 is a cross-sectional view of the spot lamp, and the spot lamp 17 in this embodiment is different from the conventional spot lamp 5 shown in FIG. Similarly, it is provided on the overhead console 3 in the cab room. Then, the two light sources 21 are mounted in the housing 19 mounted on the overhead console 3, and the concave lens mounting portion 25 provided on the decorative plate 23 on the surface covering the housing 9.
In addition, the convex lenses 27 according to the present embodiment are attached to the respective light sources 21 so that light emitted from the light sources 21 is radiated to the driver's seat and the passenger's seat through the respective lenses 27. It has become.

In this embodiment, as shown in FIG. 3, the central portion 29 on the front surface or the rear surface of the lens 27 is not stopped down, and the central portion 29 extends from the central portion 29 to the peripheral portion 31 thereof. A large number of diaphragms 33 are sequentially applied, and the central part 29 to the peripheral part 3
It is characterized in that the illuminance of the spot lamp 17 is gradually reduced as going to 1. Since the lens 27 according to the present embodiment is configured as described above, when the lens 27 is mounted on the spot lamp 17, the light emitted from the light source 21 passes through each lens 27 and the driver's seat and the assistant, as in the related art. Light is emitted to the seat. The light emitted from the central portion 29 illuminates an object such as a map brightest, and the light emitted through the peripheral portion 31 gradually decreases in illuminance as the aperture 33 increases. To decline.

[0011] Then, the lens 27 according to this embodiment,
Since there is no boundary 15 as shown in FIG. 5 between the central portion 29 and the peripheral portion 31, when irradiating a target such as a map as described above,
Light distribution is seamless to the user. Therefore, according to the spot lamp 17 using the lens 27 according to the present embodiment, when a target such as a map is irradiated ,
It is possible to maintain a sufficient brightness in eccentric part 29, the medium
Spot lamp 1 as going from the center 29 to the periphery 31
7 result of gradually lowering the illumination of, than the no boundary to the user light distribution, gets rid discomfort, such as traditional, to improve the commercial value of the scan <br/> pot lamp 17 Has the advantage that

[0012]

As described above, according to the spot lamp using the lens according to the present invention, when a target such as a map is irradiated , sufficient brightness can be maintained at the center of the lens. Along the way from the center to the periphery
A result of gradually lowering the illuminance of Ttoranpu, than the no boundary to the user light distribution, Ri without <br/> name discomfort, such as traditional, is possible to improve the commercial value of the spot lamp Have the advantages that can be.

[Brief description of the drawings]

1 is a top plan view of a spot lamp fitted with a lens according to an embodiment of claim 1.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view of a lens.

FIG. 4 is a perspective view of the interior of the cab showing a mounting position of a spot lamp.

FIG. 5 is a plan view of a conventional lens.

[Explanation of symbols]

Reference Signs List 3 overhead console 17 spot lamp 19 housing 21 light source 23 decorative plate 25 lens mounting part 27 lens 29 central part 31 peripheral part 33 aperture

Claims (1)

(57) [Claims] 1. An overhead console in a vehicle cabin.
This corresponds to the light source mounted in the provided housing.
A cover attached to the decorative plate on the surface covering the housing
A lens for a playing card, in which the center is not squeezed, and
Squeeze through the center and go from the center to the periphery.
A spot lamp lens for a vehicle, wherein the illuminance of the spot lamp is gradually reduced in accordance with the requirements.