JP7121604B2 - vehicle lamp - Google Patents

Description

The present invention relates to a vehicle lamp.

BACKGROUND ART A rear combination lamp provided at a rear portion of a vehicle as a vehicle lamp includes, for example, a tail lamp that lights at night, a brake lamp that lights when the brake is stepped on, a turn signal lamp, and the like.

Each lamp of a conventional vehicle lamp consists of a light source and an inner lens. In this case, there is a system in which the inner lens is composed of a Fresnel lens having a concentric lens cut, and the light source is positioned on the optical axis of the Fresnel lens to illuminate the whole (see Patent Document 1).

JP 2018-6059 A

However, in the above-described conventional vehicle lamp, when constructing a lamp with a different design, that is, a lamp with a different appearance, such as a tail lamp or a brake lamp, Fresnel lenses having different lens cuts must be provided as the inner lens. There is a problem that the number increases, resulting in an increase in manufacturing costs.

In order to solve the above-described problems, a vehicle lamp according to the present invention includes a plurality of Fresnel lenses arranged continuously in one direction as inner lenses, each having a concentric lens cut on a light incident surface, and each Fresnel lens. A plurality of first light sources provided at a first position and a plurality of second light sources provided at a second position shifted from the first position of each Fresnel lens, light sources are turned on at the same time to realize a lamp of a first design, and a lamp of a second design different from the first design lamp is realized when a plurality of second light sources are turned on at the same time is realized .

According to the present invention, lamps with different designs can be realized according to the first and second light sources, and therefore the number of inner lenses can be reduced, thereby reducing manufacturing costs.

1 is a front view showing an embodiment of a vehicle lamp according to the present invention; FIG. FIG. 2 is a cross-sectional view of the vehicle lamp of FIG. 1 taken along the line II-II. FIG. 2 is a cross-sectional view of the vehicle lamp of FIG. 1 taken along line III-III. FIG. 4 is a diagram showing the positional relationship between a light-emitting diode (LED) element and a Fresnel lens in the vehicle lamp of FIGS. 1 to 3; FIG. 5 is a diagram showing the light distribution of the Fresnel lens by the LED element in FIG. 4, (A) when the LED element on the optical axis is turned on, and (B) when the LED element on the first protrusion is turned on indicates the case. 1 to 3 are photographs showing the light irradiation state of the vehicle lamp, where (A) is when the LED element on the optical axis is turned on, and (B) is when the LED element on the first projection is turned on. shows the case of 5 is a diagram showing a modification of the positional relationship between the LED element and the Fresnel lens in FIG. 4; FIG.

1 is a front view showing an embodiment of a vehicle lamp according to the present invention, FIG. 2 is a cross-sectional view of the vehicle lamp of FIG. 1 taken along line II-II, and FIG. 3 is a vehicle lamp taken along line III-III of FIG. It is a sectional view.

As shown in FIGS. 1, 2, and 3, a vehicle lamp, such as a rear combination lamp, includes a housing 1 attached to a vehicle, a wiring board 2 in the housing 1, and a light source provided on the wiring board 2. Red or yellow light emitting diode (LED) elements 3a-1, 3a-2, 3a-3, 3a-4, 3a-5; 3b-1, 3b-2, 3b-3, 3b-4, 3b-5 and , an inner lens 4 consisting of Fresnel lenses 4-1, 4-2, 4-3, 4-4, and 4-5 having concentric lens cuts, and an outer lens 5 forming a housing together with the housing 1. FIG.

In each Fresnel lens 4-1, 4-2, 4-3, 4-4, 4-5, a concentric lens cut is provided on the light incident surface on the LED element side, and unevenness is provided on the light output surface on the non-LED element side. provided to eliminate uneven light irradiation. In addition, the lens cut has a convex portion having optical axes 4-1a, 4-2a, 4-3a, 4-4a, and 4-5a in the central portion, and circular projections 4-1b and 4-2b around it. , 4-3b, 4-4b, 4-5b, . As a result, the Fresnel lenses 4-1, 4-2, 4-3, 4-4 and 4-5 act as convex lenses, and the LED elements 3a-1, 3a-2 and 3a-3 on the wiring board 2 , 3a-4, 3a-5; 3b-1, 3b-2, 3b-3, 3b-4, 3b-5 are Fresnel lenses 4-1, 4-2, 4-3, 4-4, 4-5 is located at that focal length or more away from

As shown in FIG. 4, LED elements 3a-1, 3a-2, 3a-3, 3a-4 and 3a-5 are connected to respective Fresnel lenses 4-1, 4-2, 4-3, 4-4 and 4-5. optical axes 4-1a, 4-2a, 4-3a, 4-4a and 4-5a. On the other hand, LED elements 3b-1, 3b-2, 3b-3, 3b-4, and 3b-5 are light incident surfaces of respective Fresnel lenses 4-1, 4-2, 4-3, 4-4, and 4-5. are positioned on the first protrusions 4-1b, 4-2b, 4-3b, 4-4b, and 4-5b of the lens cut of , and arranged in a zigzag pattern.

As shown in FIG. 5A, when the LED element 3a-1 on the optical axis 4-1a of the Fresnel lens 4-1 is turned on, the entire surface is illuminated by the Fresnel lens 4-1. becomes the bright part. On the other hand, when the LED element 3b-1 on the first projection 4-1b of the Fresnel lens 4-1 is turned on, as shown in FIG. It becomes a part and a dark part. In this way, a significant difference occurs in the light irradiation of the LED elements 3a-1 and 3b-1.

Further, as shown in FIG. 6A, optical axes 4-1a, 4-2a, 4-3a, 4-1 of Fresnel lenses 4-1, 4-2, 4-3, 4-4, and 4-5 When the LED elements 3a-1, 3a-2, 3a-3, 3a-4 and 3a-5 on 4a and 4-5a are turned on, the entire surface is irradiated with light. On the other hand, as shown in FIG. 6B, the first projections 4-1b, 4-2b and 4-1 of the Fresnel lenses 4-1, 4-2, 4-3, 4-4 and 4-5 When the LED elements 3b-1, 3b-2, 3b-3, 3b-4, and 3b-5 on the LED elements 3b, 4-4b, and 4-5b are turned on, strong light irradiation is performed in a zigzag pattern. In this way, the light irradiation of the LED elements 3a-1, 3a-2, 3a-3, 3a-4 and 3a-5 and the LED elements 3b-1, 3b-2, 3b-3, 3b-4 and 3b-5 There is a significant difference between the light irradiation of the two lamps, and two lamps with different designs or appearances can be realized.

Light irradiation light sources by the LED elements 3a-1, 3a-2, 3a-3, 3a-4, 3a-5 can be used as tail lamps, brake lamps, turn signal lamps, daytime lights or position lamps. In this case, tail lamps, brake lamps, turn signal lamps, daytime lights or position lamps adjust the light intensity (brightness) of the LED elements 3a-1, 3a-2, 3a-3, 3a-4 and 3a-5. It can be used by On the other hand, the light source by the LED elements 3b-1, 3b-2, 3b-3, 3b-4, 3b-5 can be used as an accessory lamp.

In the above embodiment, the LED elements 3a-1, 3a-2, 3a-3, 3a-4, 3a-5 are arranged along the optical axes 4-1a, 4-2a, 4-3a, 4-4a, 4- 5a, LED elements 3b-1, 3b-2, 3b-3, 3b-4, 3b-5 are arranged on first projections 4-1b, 4-2b, 4-3b, 4-4b, 4- 5b, but in the present invention, the arrangement of the LED elements 3a-1, 3a-2, 3a-3, 3a-4, 3a-5 and the LED elements 3b-1, 3b-2, 3b -3, 3b-4, and 3b-5 may be arranged differently. For example, as shown in FIG. 4, 3b-5 may be arranged on the first projections 4-1b, 4-2b, 4-3b, 4-4b, 4-5b in an oblique direction to each other, and FIG. , the LED elements 3a-1, 3a-2, 3a-3, 3a-4, 3a-5 and the LED elements 3b-1, 3b-2, 3b-3, 3b-4, 3b-5 are mutually connected. It may be arranged horizontally on the first protrusions 4-1b, 4-2b, 4-3b, 4-4b, 4-5b.

Further, in the above embodiment, two LED elements are provided for each Fresnel lens 4-1, 4-2, 4-3, 4-4, 4-5, but three or more LED elements are provided. elements may be provided. In this case, three or more light sources with different designs can be realized.

Furthermore, although LED elements are used in the above embodiments, other light sources such as laser diode (LD) elements may be used.

Furthermore, the present invention can be applied to any modifications within the obvious scope of the above-described embodiments.

1: housing 2: wiring board 3a-1, 3a-2, 3a-3, 3a-4, 3a-5; 3b-1, 3b-2, 3b-3, 3b-4, 3b-5: LED element 4 : Inner lens 4-1, 4-2, 4-3, 4-4, 4-5: Fresnel lens 4-1a, 4-2a, 4-3a, 4-4a, 4-5a: Optical axis 4-1b , 4-2b, 4-3b, 4-4b, 4-5b: first projection 5: outer lens

Claims (5)

a plurality of Fresnel lenses arranged continuously in one direction as inner lenses and having concentric lens cuts on the light incident surface;
a plurality of first light sources provided at a first position of each Fresnel lens;
and a plurality of second light sources provided at a second position shifted from the first position of each Fresnel lens ,
realizing a lamp of a first design when the plurality of first light sources are turned on simultaneously;
A vehicle lamp that realizes a lamp of a second design different from the lamp of the first design when the plurality of second light sources are turned on at the same time . 2. The vehicle lamp according to claim 1 , wherein each of the first light sources is provided on the optical axis of each of the Fresnel lenses, and each of the second light sources is provided outside the optical axis of each of the Fresnel lenses. 3. The vehicle lamp according to claim 2 , wherein each of the second light sources is provided on the first projection of each of the Fresnel lenses. 3. The vehicle lamp according to claim 2 , wherein the second light sources are arranged in a zigzag pattern. The vehicle lamp according to any one of claims 1 to 4 , wherein the vehicle lamp is a rear combination lamp.

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