JPH0235121Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that allows the lighting state of the lamp to be visually confirmed from a remote location.

<<Prior Art>> This type of vehicle lamp is used, for example, as a lamp for visually checking whether or not the headlights of a car are on or not from the driver's seat. An example of this is shown in the third
To explain with reference to FIGS. 4 to 4, the vehicle lamp m has, for example, an LEDa which is a second light source inserted in series with a lighting circuit of a filament of a headlamp which is a first light source, and a light source holding part c of a housing b. A lens d is disposed on the upper surface of the housing b, and the leg portion of the housing b is inserted into the mounting hole of the vehicle body e, and the housing b is placed and fixed on the vehicle body e through a gasket f on the back surface of the housing b. Ru.

<<Problems to be solved by the invention>> However, in such conventional vehicle lamps, a light-receiving surface with a large number of prisms is formed on the back surface of the lens d, and when the light from the LEDa enters, the The prism formed on the light-receiving surface causes the light to be diffused and emitted, resulting in a problem of poor visibility for the driver from a remote location.

Also, as shown in FIG. 5, above the lens d
Although it is possible to form a notch with a total reflection surface that totally reflects the light from the LEDa, there is a problem in that sufficient light reflection characteristics cannot be obtained because water droplets, dust, etc. adhere to the notch.

Therefore, an object of the present invention is to provide a vehicle lamp with good visibility that notifies the lighting status of other lamps.

<Means for Solving the Problems> In order to solve the above-mentioned problems, the vehicle lamp of the present invention houses a second light source that operates in conjunction with turning on and off of the first light source located at a remote location. The vehicular lamp comprises an inner lens and an outer lens disposed on the upper surface of a housing that holds the second light source, and the inner lens has a first reflective surface formed above the light receiving surface. a second reflective surface formed on the side of the inner lens to reflect the light from the first reflective surface in the direction in which the light comes; a third reflective surface that reflects the light from the second reflective surface upward; and a third reflective surface that is formed on the upper surface of the inner lens and that reflects the light from the third reflective surface toward the front surface of the outer lens. 4 reflective surfaces, and the outer lens has a prism surface on its lower surface, into which light from the fourth reflective surface of the inner lens enters at right angles.

<<Operation>> The light from the second light source is reflected from the first reflective surface formed above the light-receiving surface of the inner lens, to the second reflective surface formed on the side of the inner lens, and then to the lower surface of the inner lens. The light is sequentially guided to the third reflective surface formed on the upper surface of the inner lens, and further transmitted through the prism surface formed on the lower surface of the outer lens, exits from the front surface of the outer lens, and is emitted in a predetermined direction. Proceed to.

《Example》 Figures 1 and 2 show an example of this invention. 2 is inserted into the light source holding part 4 and fixed,
An inner lens 5 is mounted and fixed on the upper surface of the housing 3, and an outer lens 6 is fixed above the inner lens 5 by having its lower part engaged with a locking protrusion 3a of the housing 3.

The inner lens 5 is made of transparent resin with excellent light guiding properties, and has a first reflective surface 5b cut into a V-shape at an angle of 45 degrees above the light receiving part 5a that receives light from the LED 2, and both sides of the inner lens 5. a second reflective surface 5c forming a right-angled reflective surface provided on the inner lens 5; a third reflective surface 5d formed in a concave shape on the lower surface of the inner lens 5; and a third reflective surface 5d formed in a convex shape on the upper surface of the inner lens 5. 4 reflective surfaces 5e.

On the other hand, the outer lens 6 has an exit surface 6a formed on its front surface, and an inner lens 5 on its lower surface.
A prism surface 6b is formed on which the light from the fourth reflective surface 5e enters at right angles.

The vehicle lamp 1 is attached to the vehicle body panel 7 in the same manner as before by inserting the leg portion 3b formed on the back side of the housing 3 into the mounting hole of the vehicle body panel 7, and placing it on the vehicle body panel 7 via the gasket 8. Fixed.

Next, the optical path from the second light source in the vehicle lamp of the present invention will be explained. The light emitted from the LED 2, which is the second light source, is transmitted to the light receiving portion 5a of the inner lens 5.
The light enters the inner lens 5 and is reflected by the first reflecting surface 5b toward both sides of the inner lens 5. Then,
This light is reflected by second reflecting surfaces 5c formed on both sides of the inner lens 5 in the direction in which it came, and is further reflected by a third reflecting surface 5d formed on the lower surface of the inner lens 5. reflected upwards at right angles. Next, this light is reflected from the fourth reflective surface 5e formed on the upper surface of the inner lens 5 toward the output surface 6a of the outer lens 6, and then passes through the prism surface 6b formed on the lower surface of the outer lens 6. The light then advances to the output surface 6a, and is emitted from the output surface 6a in a predetermined direction.

In the above embodiment, light is reflected in both directions of the inner lens by providing a V-shaped reflecting surface as the first reflecting surface above the light receiving part of the inner lens. The surface may be a reflective surface that reflects the light to either side.

Further, although an LED is used as the second light source, the present invention can also be applied to a vehicle lamp that uses a light cable as the second light source.

<<Effects of the invention>> As described above, the vehicle lamp of the invention reflects light from the second light source through the respective reflecting surfaces formed on the inner lens and the prism surface formed on the lower surface of the outer lens. Since the light can be reliably guided to the front emission surface of the outer lens, the lighting state can be displayed with high visibility even from a remote location.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a vehicle lamp showing an embodiment of the present invention, Fig. 2 is an enlarged view of part A in Fig. 1, and Fig. 3 is an exploded perspective view showing an example of a conventional vehicle lamp. 4
This figure is a cross-sectional view of the vehicle lamp shown in FIG. 3, and FIG. 5 is a cross-sectional view showing another example of the conventional example. 2...LED, 3...Housing, 4...Second
Light source holding part, 5... Inner lens, 5a... Light receiving surface, 5b... First reflecting surface, 5c... Second reflecting surface, 5d... Third reflecting surface, 5e... Fourth reflecting surface. surface, 6... outer lens, 6b... prism surface.

Claims (1)

[Scope of utility model registration request] A vehicle lamp housing a second light source that operates in conjunction with turning on and off of a first light source located at a remote location, wherein an inner lens and an outer lens are provided on the upper surface of a housing that holds the second light source. The inner lens has a first reflecting surface formed above the light receiving surface thereof, and a first reflecting surface formed on the side of the inner lens to reflect light from the first reflecting surface. The second wave is reflected in the opposite direction.
a third reflective surface formed on the lower surface of the inner lens to reflect the light from the second reflective surface upward; and a third reflective surface formed on the upper surface of the inner lens to reflect the light from the second reflective surface upward. a fourth reflective surface that reflects light from the reflective surface toward the front surface of the outer lens, and the outer lens has a prism surface on the lower surface of which light from the fourth reflective surface of the inner lens enters at right angles. A vehicle lamp characterized by comprising: