JP6983592B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lighting fixture in which a plurality of lamp units are arranged side by side.

For example, the rear combination lamps arranged on the left and right sides of the rear of the vehicle are integrally configured by incorporating lamp units such as tail lamps, stop lamps, and turn signal lamps in the lamp room defined by the outer lens that covers the housing and its opening. Has been done. Here, an example of such a rear combination lamp is shown in FIG.

That is, FIG. 7 is a plan sectional view of a conventional rear combination lamp, and the illustrated rear combination lamp 101 is a tail lamp as a lamp unit in a lamp chamber 104 defined by an outer lens 103 covering a housing 102 and its opening. The 105, the stop lamp 106, and the turn signal lamp (not shown) are housed and integrally formed.

The tail lamp 105 and the stop lamp 106 have the same emission color of red, and these are arranged side by side in the horizontal direction. Here, the tail lamp 105 includes a plurality of (six) LEDs 109 which are first light sources mounted on the substrate 108, a first reflector 110 having an arcuate curved surface, and a second reflector 111 having a flat plate shape. A shielding portion 111a extending integrally toward the rear of the vehicle (lower part in FIG. 7) is formed in a part of the second reflector 111.

Further, the stop lamp 106 includes a plurality of (four) LEDs 113 which are second light sources mounted on the substrate 112, a first inner lens 114, and a second inner lens 115.

In the rear combination lamp 101 configured as described above, the tail lamp 105 is lit at night and the like, and the stop lamp 106 is lit when the driver depresses the brake pedal (not shown). That is, when a current is supplied to each of the plurality of LEDs 109 of the tail lamp 105 at night or the like and these emit light, most of the light L emitted from each LED 109 is reflected twice by the first reflector 110 and the second reflector 111. The tail lamp 105 lights up in red because it passes through the transparent first inner lens 114 and the outer lens 103 and emits light toward the rear of the vehicle.

Further, when the brake pedal is stepped on by the driver, a current is supplied to each of the plurality of LEDs 113 of the stop lamp 106 to emit light, and the light from each LED 113 is the transparent second inner lens 115 and the first inner lens 115. The stop lamp 106 lights up in red because it passes through the lens 114 and the outer lens 103 and emits light toward the rear of the vehicle.

By the way, Patent Document 1 proposes a configuration in which a novel lighting feeling with a three-dimensional effect can be obtained in a vehicle lamp such as a rear combination lamp configured by integrally incorporating a plurality of lamp units into a lamp chamber. There is. Further, Patent Documents 2 and 3 propose a configuration for brightly emitting light from a gap formed between an adjacent movable lamp unit and a fixed lamp unit to enhance the sense of unity when both lamp units are lit. ing.

Japanese Unexamined Patent Publication No. 2010-225388 Japanese Unexamined Patent Publication No. 2016-134342 Japanese Patent No. 5526373

However, in the conventional rear combination lamp 101 shown in FIG. 7, when the tail lamp 105 is lit at night or the like and the stop lamp 106 is off (the driver does not depress the brake pedal). Since the portion of the stop lamp 106 is locally darkened, there is a problem that the lighting feeling of the tail lamp 105 is poor.

In order to solve the above problem, an attempt was made to remove the shielding portion 111a of the second reflector 111 that separates the tail lamp 105 and the stop lamp 106, and to brighten the portion of the stop lamp 106 with a part of the light of the tail lamp 105. Not enough effect was obtained. It is impossible to solve such a problem even with the configurations proposed in Patent Documents 1 to 3.

The present invention has been made in view of the above problems, and an object of the present invention is to eliminate a dark part by shining a part of a lamp unit in a non-lighting state brightly with a part of the light of a lamp unit in a lighting state. The purpose is to provide a vehicle lamp that can enhance the lighting feeling.

In order to achieve the above object, the invention according to claim 1 is a vehicle lamp in which a plurality of lamp units having the same emission color are housed in a lamp chamber defined by an outer lens covering a housing and an opening thereof.
A first lamp unit having a first light source and first and second reflectors and a second lamp unit having a second light source and an inner lens are arranged side by side.
A light receiving cut is formed on the side surface of the inner lens facing the first reflector to receive a part of the light emitted from the first light source and reflected by the first reflector, and a part of the surface of the inner lens. Form a concentric Fresnel lens ,
It is characterized in that a lens cut is formed on the inner surface of a vertical wall facing the light receiving cut of the inner lens to totally reflect the light leaked from the light receiving cut to the outside.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the light receiving cut is a semi-cylindrical flute cut.

The invention according to claim 3 is characterized in that, in the invention according to claim 1, a plurality of the Fresnel lenses are formed in regions that equally divide a part of the surface of the inner lens.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a lens cut is formed on the inner surface of a standing wall of the inner lens facing the light receiving cut to totally reflect the light leaked from the light receiving cut to the outside. It is characterized by the fact that it was done.

The invention according to claim 5 is characterized in that, in the invention according to claim 4, the lens cut is a mountain valley-shaped V-cut.

According to the first and second aspects of the invention, even when the second lamp unit is turned off when the first lamp unit is turned on, the light is emitted from the first light source of the first lamp unit. A part of the light reflected by the 1 reflector is incident on the inner lens of the second lamp unit. Then, the light incident on the inner lens is efficiently emitted while being diffused by the Fresnel lens formed on the surface of the inner lens in the process of traveling through the inner lens while repeating total reflection, so that the light is turned off by this light. The second lamp unit emits bright light. For this reason, the dark portion of the vehicle lighting equipment is eliminated, and the entire vehicle light is emitted brightly to enhance the lighting feeling of the vehicle lighting equipment.

According to the third aspect of the present invention, since a plurality of Fresnel lenses are formed in a region that equally divides a part of the surface of the inner lens, the light distribution required for the second lamp unit can be satisfied.

According to the invention of claim 4, since a lens cut such as a mountain valley-shaped V-cut is formed on the inner surface of the standing wall facing the light receiving cut of the inner lens, the light leaked from the light receiving cut of the inner lens is externally formed by the lens cut. It can be totally reflected toward the lens, and the efficiency of using the light from the first light source can be improved.

It is a front view of the vehicle lamp (rear combination lamp) which concerns on this invention. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is an enlarged detailed view of part B of FIG. It is a perspective view of the 2nd inner lens of a stop lamp. It is a front view of the 2nd inner lens of a stop lamp. FIG. 5 is a cross-sectional view taken along the line CC of FIG. It is a plan sectional view of the conventional rear combination lamp.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a front view of a vehicle lamp (rear combination lamp) according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is an enlarged detailed view of part B of FIG. 2, and FIG. 4 is a stop lamp. A perspective view of the second inner lens, FIG. 5 is a front view of the second inner lens, and FIG. 6 is a sectional view taken along line CC of FIG.

The vehicle lighting tool 1 according to the present embodiment is a rear combination lamp provided on the right side of the rear part of the vehicle, and the basic configuration of the rear combination lamp provided on the left side is the same as that on the right side. Only the vehicle lamp 1 will be illustrated and described.

As shown in FIG. 2, the vehicle lighting fixture 1 that functions as the rear combination lamp on the right side has the same red emission color in the upper part of the lighting chamber 4 defined by the outer lens 3 that covers the housing 2 and its opening. A tail lamp 5 and a stop lamp 6 are arranged side by side as a certain lamp unit, and a turn signal lamp 7 (see FIG. 1) having an orange emission color arranged below the tail lamp 5 and the stop lamp 6 is housed and integrated. It is formed.

The tail lamp 5 has six LEDs 9 which are first light sources mounted along a vertical direction (vertical direction on the paper surface in FIG. 2) on a flat plate-shaped substrate 8, a first reflector 10 having an arcuate curved surface, and a flat plate-like shape. The second reflector 11 of the above is provided. Further, the stop lamp 6 includes four LEDs 13 (only two are shown in FIG. 2), which is a second light source mounted on the substrate 12, a first inner lens 14, and a second inner lens 15. There is. The inner surfaces (reflection surfaces) of the first reflector 10 and the second reflector 11 are subjected to reflection treatment such as aluminum vapor deposition.

Here, the first inner lens 14 and the second inner lens 15 are made of a transparent resin such as acrylic or polycarbonate, and as shown in FIGS. 4 to 6, a part of the second inner lens 15 is used. It is integrally molded into a notched rectangular box. Then, on the side surface of the second inner lens 15 facing the first reflector 10 (the right end surface in FIGS. 4 to 6), the light emitted from each of the plurality of LEDs 9 of the tail lamp 5 and reflected by the first reflector 10 is emitted. A light receiving cut 15a that partially receives L2 (see FIGS. 2 and 3) is formed. Here, the light receiving cut 15a is composed of a semi-cylindrical flute cut.

Further, as shown in FIGS. 4 and 5, a concentric Fresnel lens is formed in a region of a standing wall that stands vertically in front of the second inner lens 15 and divides the area of the vertical wall into four equal parts. A total of four 15b are formed. The back surface of the standing wall in front of the second inner lens 15 constitutes a flat flat surface.

Further, a lens cut 15c is formed on the inner surface of the vertical wall (side wall) facing the light receiving cut 15a of the second inner lens 15 to totally reflect the light leaked from the light receiving cut 15a to the outside. In the form, the lens cut 15c is composed of a plurality of mountain valley-shaped V-cuts. A knurled shielding cut 15d is formed on the inner surface of the bottom wall of the second inner lens 15 so that the inside of the vehicle lamp 1 cannot be seen from the outside.

Therefore, in the vehicle lamp 1 configured as described above as the rear combination lamp, the tail lamp 5 is lit at night and the like, and the stop lamp 6 is lit when the brake pedal is stepped on by the driver. That is, when a current is supplied to each of the plurality (six) LEDs 9 of the tail lamp 5 at night or the like and these emit light, most of the light L1 emitted from each LED 9 is a first reflector as shown in FIG. After being reflected twice by the 10 and the second reflector 11, the tail lamp 5 lights up in red because it passes through the transparent first inner lens 14 and the outer lens 3 and emits light toward the rear of the vehicle (lower part of FIG. 2).

Further, when the brake pedal is stepped on by the driver, a current is supplied to each of the plurality (four) LEDs 13 of the stop lamp 6 to emit light, and the light from each LED 13 is a transparent second inner lens. The stop lamp 6 lights up in red because it passes through the 15 and the first inner lens 14 and the outer lens 3 and emits toward the rear of the vehicle.

By the way, even when the stop lamp 6 is turned off when the tail lamp 5 is lit at night or the like, in the vehicle lighting tool 1 according to the present embodiment, the light is emitted from each LED 9 of the tail lamp 5. A part L2 of the light reflected by the first reflector 10 is received by the light receiving cut 15a formed on the second inner lens 15 of the stop lamp 6 as shown in FIGS. 2 and 3. Then, the light L2 received by the light receiving cut 15a is incident on the inside of the second inner lens 15 and travels through the inside of the second inner lens 15 while repeating total reflection, and is applied to the surface of the second inner lens 15. Efficiently emits toward the rear of the vehicle (lower part of FIG. 2) while being diffused by each of the four Fresnel lenses 15b (see FIGS. 4 and 5) formed. Therefore, the light L2 causes the stop lamp 6 that is off to emit bright light, and as a result, the dark portion of the vehicle lighting tool 1 disappears, the entire light is emitted brightly, and the lighting feeling of the vehicle lighting tool 1 is enhanced. Be done. Here, in the present embodiment, since a total of four Fresnel lenses 15b are formed in the area where the area of the standing wall in front of the second inner lens 15 is equally divided into four, the light is emitted from each LED 13 when the stop lamp 6 is lit. The light can be efficiently emitted toward the rear of the vehicle, and the light distribution required for the stop lamp 6 can be satisfied.

In the present embodiment, the number of concentric Fresnel lenses 15b formed on the surface of the second inner lens 15 may be one as long as the second inner lens 15 is square. Further, if the second inner lens 15 is rectangular, the concentric Fresnel lenses 15b may be arranged vertically in even-numbered equal parts or more, and when the concentric Fresnel lenses 15b are placed side by side, 2 It may be arranged evenly or more. However, if it is desired to satisfy the light distribution control required for the stop lamp, the tail lamp, or the turn signal lamp, the concentric Fresnel lens 15b is divided into six equal parts or more on the upper and lower sides of the surface of the second inner lens 15 or the four divisions of the embodiment. It is more suitable to divide the light into even numbers because it enables complicated light distribution control.

Further, in the present embodiment, the lens cut 15c (see FIGS. 4 and 5) composed of mountain valley-shaped V-cuts is formed on the inner surface of the vertical wall (side wall) facing the light receiving cut 15a of the second inner lens 15. The light leaked from the light receiving cut 15a of the second inner lens 15 can be totally reflected outward by the lens cut 15c, and the effect of improving the utilization efficiency of the light from the LED 9 of the tail lamp 5 can be obtained. ..

Although the present invention has been described above with respect to a rear combination lamp in which a tail lamp, a stop lamp and a turn signal lamp are integrally incorporated, the present invention has described the DRL (Day Running Lamp) and the like in addition to the lamp. Of course, it can also be applied to vehicle lamps that are integrally incorporated with position lamps and the like.

1 Vehicle lighting equipment (rear combination lamp)
2 Housing 3 Outer lens 4 Lamp room 5 Tail lamp (1st lamp unit)
6 Stop lamp (second lamp unit)
7 Turn signal lamp 8 Board 9 LED (1st light source)
10 1st reflector 11 2nd reflector 12 Board 13 LED (2nd light source)
14 1st inner lens 15 2nd inner lens 15a Light receiving cut 15b Fresnel lens 15c Lens cut 15d Shielding cut L1, L2 Light

Claims (4)

In a vehicle lighting fixture consisting of a plurality of lamp units having the same emission color in a lamp chamber defined by an outer lens covering the housing and its opening.
A first lamp unit having a first light source and first and second reflectors and a second lamp unit having a second light source and an inner lens are arranged side by side.
A light receiving cut is formed on the side surface of the inner lens facing the first reflector to receive a part of the light emitted from the first light source and reflected by the first reflector, and a part of the surface of the inner lens. Form a concentric Fresnel lens ,
A vehicle lighting fixture characterized in that a lens cut is formed on the inner surface of a vertical wall facing the light receiving cut of the inner lens to totally reflect the light leaked from the light receiving cut to the outside. The vehicle lamp according to claim 1, wherein the light receiving cut is a semi-cylindrical flute cut. The vehicle lighting fixture according to claim 1, wherein a plurality of the Fresnel lenses are formed in regions that equally divide a part of the surface of the inner lens. It said lens cutting, vehicle lamp according to claim 1, characterized in that the peaks and valleys form of V-cut.

Images