JP3140160U - Directional angle enlargement device for LED in-vehicle lamp - Google Patents

Abstract

In an LED type vehicle-mounted lamp, the directivity angle is expanded to about 105 ° to 180 ° to improve visibility.
In a vehicle light with a configuration in which LEDs 12a to 12e are attached to the front surface of a base 11 and the LEDs are covered with a transparent or lightly colored cover, a part of the light is laterally directed in front of the LEDs. The prism lenses 14 and 15 that refract and emit light and diffuse are attached. The light emitted from the LED is refracted by about 90 ° right and left sides by the prism lens together with the straight light, so that the finger light angle is expanded to about 105 ° to 180 °. As a result, the visibility from the following vehicle is enhanced, which is effective as a nighttime safety measure. Moreover, since the prism lens can be attached together with the cover with the cover attaching screw 19, it can be retrofitted to an existing vehicle height light.
[Selection] Figure 2

Description

  The present invention relates to a directivity angle expansion device for an LED-type vehicle lamp, and more specifically, improves visibility from a wide range by improving the directivity characteristic of an LED from about 30 ° to about 105 ° to 180 °. The present invention relates to a directivity angle enlarging device for enhancing the position.

LED-type in-vehicle lamps are particularly popular for trucks because of their low power consumption, excellent durability, low cost compared to light bulbs, and high light intensity. There are vehicle height lights, side lights, auxiliary direction indicators, high-mount brake lights, and the like.
FIG. 4 shows an example in which LED type lamps are mounted as truck light lamps. In this example, the LED type is provided on both sides of the rear part of the container 2 of the truck 1 near the roof. A vehicle light 3 is attached. In the vehicle height light 3 in this example, the LEDs 5 a to 5 e are arranged in a line in front of the base 4 as shown in FIG. 5. Also in this case, since the finger angle of the light of the LEDs 5a to 5e is as narrow as about 30 °, the reflection plate 6 is attached to the front of the base 4, and the reflected light from the reflection plate 6 is assisted. Thus, the narrowness of the finger light angle is covered.

However, this reflector 6 not only reflects light in the front (rear) direction, but also emits light from the LEDs 5a to 5e in the front direction and not in the rear direction. Therefore, it is not so useful for improving the visibility.
Of course, if the LEDs 5a to 5e are not only oriented in the front direction but also increased in number, they can improve the above-mentioned directivity angle of about 30 °. Increasing the number leads to an increase in cost and power consumption.
Moreover, as above-mentioned, since LED5a-5e has the characteristic to irradiate strong light in a front direction, the dazzling light to the vehicle which faces directly is regarded as a problem as light pollution.

  An object of the present invention is to solve the above-mentioned problems. In an LED type vehicle-mounted light including a conventional vehicle height light, the light irradiation angle is set to about 105 ° to 180 ° without increasing the number of LEDs. In addition to being able to be expanded to a degree, it is characterized in that it can be easily retrofitted to an existing LED-type in-vehicle lamp.

  In order to achieve the above object, according to the first aspect of the present invention, in the directivity angle widening device for an LED-type in-vehicle lamp, an LED is attached to the front surface of the base, and the LED is covered with a transparent or lightly colored cover. In addition to transmitting the light of the LED to the front side of the transparent substrate disposed on the front side of the LED, it is used by attaching to the vehicle lamp having the configuration, and about 90 on the left and right or one side. A prism lens that refracts and expands the directivity angle of the light of the LED is provided.

  Furthermore, in invention of Claim 2, in the directivity angle expansion device in LED type vehicle-mounted light of Claim 1, screw holes for screws for attaching the cover to the base pass through both sides of the substrate. And is configured to be configured so that the directivity angle widening device can be mounted in the lamp together with the mounting of the cover.

  Furthermore, in the invention according to claim 3, in the directivity angle expansion device for the LED type vehicle lamp according to claim 1, the directivity angle expansion device is configured to be retrofitted to an existing vehicle light. It is characterized by comprising.

  Furthermore, in the invention according to claim 4, in the directivity angle enlarging device in the LED type vehicle lamp according to claim 1, the substrate and the prism lens are integrally injection-molded with a transparent plastic, To do.

  Furthermore, in the invention described in claim 5, in the directivity angle enlarging device in the LED type vehicle lamp according to claim 4, the transparent plastic is made of methacrylic resin.

As described above, according to the present invention, a prism lens that reflects not only light emitted from the LED forward but also a 90 ° side reflection is provided on the front surface of the LED. Can be enlarged in the direction of about 105 ° to 180 °, thereby improving the visibility from the following vehicle and further solving the problem of light pollution such as dazzling.
In addition, due to the expansion of the light angle from the LED, in the case of a vehicle light, etc., the area directly under the rear of the vehicle becomes brighter, which is convenient for loading and unloading luggage and is also effective as a nighttime safety measure.
Further, in the present invention, since the prism lens can be retrofitted in a vehicle lamp, the directivity angle of the existing vehicle lamp can be easily improved. Therefore, it is not necessary to separately install an in-vehicle lamp for improving the angle of irradiation light, and it is economical.

The directivity angle widening device for in-vehicle lights according to the present invention includes in-vehicle lights using LEDs as light sources, such as in-vehicle lights such as vehicle high lights, side lights, auxiliary direction indicators, and high-mount brake lights. As a safety measure, it can be implemented to improve the directivity of all LED safety lights and illuminating lights such as curbs and various supports.
The number of LEDs used is not limited to one, but of course a single row or a plurality of rows mounted on the same plane. Can do.

The prism lens may be attached to the in-vehicle lamp from the beginning, or may be attached later. When installing this prism lens, the prism lens may be independently installed in the vehicle lamp using screws or adhesives, but in the case of the vehicle lamp, it is transparent or semi-transparent on the front surface so as to cover the LED. Since the transparent cover is screwed, the prism lens may be fixed together with the cover by using this screwing.
The prism lens has a shape that reflects a part of the light of the LED 90 ° to the side, and in order to reflect it in both the left and right directions, a part of the straight light is moved 90 ° left and right within a range that cannot prevent straight light. In order to refract, prism lenses are juxtaposed in two places. However, one is used when reflecting only in the left or right direction. The material of the prism lens is a hard plastic excellent in transparency, and for example, methacrylic resin is suitable, and can be manufactured at low cost by using an injection molding method for molding.
Reflectors and covers used in conventional vehicle lamps can be used as they are.

Hereinafter, the case where this invention is applied to a vehicle height light is demonstrated in detail based on FIGS. 1-3. Reference numeral 10 indicates an entire vehicle light lamp in which the present invention is implemented, and 11 is a base incorporating an electric circuit therein, and five LEDs 12a to 12e are attached in a row on the front surface of the base 11. .
Reference numeral 13 denotes a directivity angle widening device in which prism lenses 14 and 15 are formed in two rows with a space in front of a flat plate portion (substrate) 16. The directivity angle widening device 13 is made of transparent plastic and has both sides. A screw hole 17 is formed in the flat plate portion 16, and the flat plate portion 16 is set to a height that escapes the height of the LEDs 12a to 12e.

Reference numeral 18 denotes a transparent cover, and the LEDs 12a to 12e and the finger light angle widening device 13 are entirely watertightly covered by the cover 18 as shown in FIG. 1, and when the cover 18 is attached to the base 11, The directivity angle enlarging device 13 is fixed together with the cover 18 by a screw 19 through the screw hole 17.
In the figure, 20 is a power line, and 21 is a bolt shaft for attaching the vehicle light 10 to the upper part of the container 2 of the truck 1 as shown in FIG.

  When retrofitting the directional angle expansion device 13 to an existing vehicle height light, the screw 19 is removed and the cover 18 is opened, and the screw holes 16a on both sides of the flat plate portion 16 are aligned with the screw holes 17 on the cover 18 side. Then, cover 18 is placed and screw 19 is tightened. By doing in this way, about the existing vehicle height light 10, a directivity angle can be expanded without adding a hand at all, and the visibility from the 180 degree direction as the vehicle height light 10 can be improved.

Explanatory drawing which shows the whole vehicle height lamp which assembled | attached the directivity angle expansion apparatus which concerns on this invention Illustration of the vehicle light with the cover removed AA 'line sectional view Explanatory drawing of a container truck with a vehicle light attached to the rear of the container Explanatory drawing of the state with the cover removed in a conventional vehicle light

Explanation of symbols

10 Car high light 11 Base 12a-12e LED
13 Directional angle expansion device 14, 15 Prism lens 16 Flat plate portion 17 Screw hole 18 Cover 19 Screw 20 Power line 21 Bolt shaft

Claims (5)

  An LED is attached to the front of the base, and the LED is attached to an in-vehicle lamp having a structure covered with a transparent or lightly colored cover. The transparent substrate disposed on the front side of the LED is used. Directional angle in an LED-type vehicle-mounted lamp in which a prism lens that refracts about 90 ° to the left or right or one side and expands the directivity angle of the LED light is arranged on the front side in addition to transmitting the LED light. Enlarging device.   Screw holes through which screws for attaching the cover to the base pass are formed on both sides of the substrate, and the directional angle expanding device can be attached in the lamp together with the attachment of the cover. The directivity angle enlarging device in the LED type on-vehicle lamp according to claim 1.   The directivity angle expansion device for an LED type vehicle lamp according to claim 1, wherein the directivity angle expansion device is configured to be retrofitted to an existing vehicle light.   The directivity angle enlarging device for an LED-type in-vehicle lamp according to claim 1, wherein the substrate and the prism lens are integrally injection-molded with a transparent plastic.   5. The directivity angle enlarging device in an LED type vehicle lamp according to claim 4, wherein the transparent plastic is made of methacrylic resin.

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