JP4565655B2 - Lamp unit and combination lamp incorporating the lamp unit - Google Patents

Description

  The present invention relates to a lamp called a tail lamp, a stop lamp or the like that is used for a vehicle or the like and is used for notifying the following vehicle, a pedestrian or the like of the behavior of the own vehicle.

  FIG. 9 shows an example of the configuration of a conventional lamp 90 of this type, and the lamp 90 is provided with a rotating paraboloid reflecting mirror 91, and a light source placed at the focal point of the reflecting mirror 91. The light from 92 is reflected as a substantially parallel light beam, and is emitted in the direction intended for irradiation.

An outer lens 93 is provided on the reflecting direction side of the reflecting mirror 91 so as to cover the reflecting mirror 91 and transmits the parallel light rays. At this time, the outer lens 93 is transmitted. Is provided with a fish-eye lens cut 93a, and the light distribution characteristics of the lamp 90 can be obtained by appropriately diffusing the parallel light rays.
JP 2000-149616 A

  However, in the lamp 90 having the above-described conventional configuration, the surface on which the uneven fish-eye lens cut 93a is applied is directed toward the reflecting mirror 91 for the purpose of preventing the adhesion of dust and the like, and the following vehicle at daytime. When the outer lens 93 surface is viewed from the above, it can only be seen as a flat surface, for example, it is unclear when viewed from the following vehicle such as a difference in car type, car grade, that is, a design difference is difficult to express. The problem which has become.

  In addition, even when the light is on, the connecting line between the fish-eye lens cuts 93a applied to the inside only looks like a cross-shaped pattern or a hexagonal honeycomb-shaped pattern. It was something that could not be given, and it was poor in terms of design.

  Further, the fish-eye lens cut 93a has a structure in which a small-diameter hemisphere is continuous to form a single lens. Therefore, the diffusibility is high, the transparency of the lens itself is poor, the transparency in recent years is high, and the internal reflection is high. There is also a problem that the compatibility when combined with other lamps that are clearly designed to have a clear surface and shine, and has a high metallic feeling has been raised.

  In particular, in recent years, so-called combination lamps, in which a plurality of lamps for use on both the front side and the rear side of a vehicle are integrated with a transparent lens that matches the shape of the vehicle body, are often adopted. As described above, when lamps with low transparency of the lens surface are mixed, there is a problem that the vehicle user is uncomfortable and the merchantability is impaired.

  Further, in the conventional method, in the case of an independent light source such as an LED lamp, a configuration that attempts to perform uniform light emission by combining each cut such as a fish-eye lens cut 93 has been tried. In some cases, it is possible to feel a particle feeling (smooth feeling) that makes each individual light source shine independently when lit, and in any case, it is difficult to obtain a sense of unity with other lamps. It was producing points.

  As a specific means for solving the above-described conventional problems, the present invention forms a bottomed cylindrical lens comprising a cylindrical portion and a bottom portion that closes one end of the cylindrical portion with a transparent member. A plurality of light sources are arranged in a ring shape in the vicinity of the inner surface of the cylindrical portion at the bottom, and a substantially V-shaped groove is formed in close contact with the outer diameter of the cylindrical portion. By providing a lamp unit and a combination lamp for the rear or front, which is characterized by incorporating at least one of the above lamp units, it is possible to unify the design and to produce a novel light emission that has never been seen before It is possible to provide a lamp unit that performs the above and solve the problem.

  In a conventional lamp, particularly a combination lamp in which a plurality of lamps are combined, a combination of a plurality of independent light sources such as LED lamps is used. As a lamp that emits a sense of incongruity with other parts of the lamp and emits a novel light emission that is unprecedented when it is lit, it further enhances the aesthetics and improves the aesthetics of the entire vehicle. It has an excellent effect.

  Below, this invention is demonstrated in detail based on embodiment shown in a figure. FIG. 1 and FIG. 2 show a first embodiment of a lamp unit 1 according to the present invention. This lamp unit 1 includes a lens 2 having a bottomed cylindrical shape and a plurality of, for example, LED lamps. And a light source 3.

  The lens 2 includes a cylindrical portion 21 that is substantially cylindrical with a transparent resin or the like, and a bottom portion 22 that has a substantially disk shape that closes one end of the cylindrical portion 21. As shown in FIG. 2, the bottom portion 22 is provided with a plurality of light source mounting portions 22a, and the light source 3 such as an LED lamp is mounted in a ring shape at a predetermined position by an appropriate means such as adhesion or insertion.

  And in the bottom part 22 to which the said light source 3 was attached, the cylindrical part 21 of the said lens 2 is set as the structure (refer FIG. 1) which can be attached as the state which accommodates the said light source 3 inside. At this time, the bottom portion 22 is provided with a power supply terminal (not shown) for the light source 3 so as to be able to blink from the outside of the lens 2.

  In addition, a plurality of substantially V-shaped grooves 21a (hereinafter referred to as V-shaped grooves 21a) are formed on the outer side surface of the cylindrical portion 21 as shown in FIG. Yes. In this embodiment, the V-shaped groove 21 a is formed as a direction orthogonal to the central axis Z of the cylindrical portion 21.

  FIG. 3 is an explanatory view showing the operation of the lamp unit 1 according to the present invention. When the lamp unit 1 is actually attached to a vehicle and the light source 3 is turned on, the lamp unit 1 is viewed in most cases. The person sees the light source 3 through the V-shaped groove 21 a provided in the cylindrical portion 21.

  At this time, when the line of sight passes through the V-shaped groove 21a provided in the cylindrical portion 21, the difference between the refractive index of the member in which the cylindrical portion 21 is formed and the refractive index of the atmosphere is refracted. However, since the viewer cannot detect refraction, it seems that light from the light source 3 or light from the light source 3 exists on the extension of the line of sight, as schematically shown in FIG. Furthermore, it appears that the light from the light source 3 is curved in the cylindrical portion 21.

  Thus, even in the cylindrical portion 21, the lamp unit 1 in which the light from the light source 3 appears curved has not existed in the past, and the present invention makes it possible to provide a lamp unit 1 with a completely new appearance that has never been seen before. In addition, since the shape of the light in the cylindrical portion 21 changes variously depending on the viewing direction, it is possible to provide the lamp unit 1 having a novel appearance which is not present in this respect.

  FIG. 4 shows another second embodiment of the present invention. This second embodiment is mainly performed in consideration of appearance when the lamp unit 1 is viewed from the front direction (center axis Z direction). It has been broken.

  When the lamp unit 1 is viewed from the direction of the central axis Z of the cylindrical portion 21 as described above, the line of sight of the viewer hardly passes through the V-shaped groove 21a, and FIG. In the cylindrical portion 21 having the configuration shown in FIG. 6, there is a high possibility that the light source 3 is directly viewed, and the curved light as described above is not displayed or is not likely to be seen as expected.

  Therefore, in the second embodiment, a decorative lens 23 having a ring shape is provided at the opposite end where the bottom portion 22 of the cylindrical portion 21 is provided. The central portion of the width of the portion thus formed is formed thick, and when viewed through the light source 3, an appropriate deformation is generated so as to avoid a real image in which the light source 3 is directly viewed.

  FIG. 5 and FIG. 6 show a third embodiment of the present invention, and this third embodiment is intended to provide a further novel appearance to what has been described above.

  Also in the third embodiment, the lamp unit 1 is composed of a lens 2 and a light source 3, and the lens 2 is composed of a cylindrical portion 21 and a bottom portion 22. Similar to the example. Moreover, the point which the decoration ring 23 is provided as needed, such as the appearance as the lamp unit 1, is also the same.

  Here, in the third embodiment, the V-shaped groove 21a provided in the cylindrical portion 21 is devised, and both the V-shaped groove 21a of the first embodiment and the second embodiment are described above. Whereas in the third embodiment, all the V-shaped grooves 21a are, for example, 15 degrees with respect to the central axis Z, whereas they are formed in a circular shape orthogonal to the central axis Z of the cylindrical portion 21. Etc.

  Note that the amount of inclination of the V-shaped groove 21a with respect to the central axis Z described above depends on factors such as the diameter of the cylindrical portion 21, the depth of the V-shaped groove 21a, the pitch, the number of light sources 3, and the decoration ring. Since the effect varies depending on various conditions such as the presence or absence of 23, it is preferable to set so as to obtain a desired effect under the condition of actually attaching to a vehicle or the like.

  By doing so, as schematically shown in FIG. 6, the light from the light source 3 appears to bend so that each of them is twisted, which is more than the configuration shown in the first and second embodiments. As a result, a more innovative lighting state can be obtained.

  FIG. 7 shows a combination lamp 10 in which the lamp unit 1 of the first to third embodiments described above is incorporated. As is apparent from the description of the embodiment of the lamp unit 1, the lamp is shown in FIG. The unit 1 can be sufficiently viewed not only from the rear but also from the side, and can provide an unprecedented appearance when viewed from the side. By attaching it to a position that can be seen from the side of the combination lamp 10, the entire combination lamp 10 can be obtained with a novel appearance.

It is a front view which shows the 1st Example of the lamp unit which concerns on this invention. It is sectional drawing which follows the AA line of FIG. It is explanatory drawing which shows the effect | action of the 1st Example of the lamp unit which concerns on this invention. It is sectional drawing which shows the 2nd Example of the lamp unit which concerns on this invention. It is a side view which shows the 3rd Example of the lamp unit which concerns on this invention. It is explanatory drawing which shows typically the effect | action of the 3rd Example of the lamp unit which concerns on this invention. It is a front view which shows the Example of the combination lamp which employ | adopts the lamp unit which concerns on this invention. It is a perspective view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lamp unit 2 ... Lens 21 ... Cylindrical part 21a ... V-shaped groove 22 ... Bottom part 22a ... Light source attachment part 23 ... Decoration ring 3 ... Light source 10 ... Combination lamp

Claims (4)

  A transparent member is used to form a bottomed cylindrical lens composed of a cylindrical portion and a bottom portion that closes one end of the cylindrical portion, and a plurality of light sources are provided in the vicinity of the inner surface of the cylindrical portion of the bottom portion. A lamp unit, which is arranged in a ring shape, and has a substantially V-shaped groove in close contact with the outer diameter of the cylindrical portion.   The decorative lens having a ring shape protruding toward the inner diameter side of the cylindrical portion is provided at an end portion of the cylindrical portion opposite to the end portion where the bottom portion is provided. The lamp unit according to 1.   The lamp unit according to claim 1 or 2, wherein the substantially V-shaped groove formed in the cylindrical portion is provided with an inclination with respect to a central axis of the cylindrical portion.   A rear or front combination lamp in which at least one of the lamp units according to claim 1 is incorporated.

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