JP2009277419A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive vehicular lighting fixture for serving as a light space rendering function by improving a lighting function and a degree of freedom in utilizing emitted light. <P>SOLUTION: A light source 1 is arranged in a lamp chamber 41 formed by a lens 30 having a central portion 31, a sidewall portion 33 and a flange portion 34, and a housing 20. Light L1 moving to the central portion 31 and light L2 moving to a parabolic reflective surface 26 of the housing 20, out of light emitted from the light source 1, are used as illuminating light. Light L3 moving to the sidewall portion 33 is emitted to the flange portion 34 subjected to a lens cut 35, and light reflected and refracted by the lens cut 35 is used to produce decorative effects and rendering effects. Thus, such an impression that the flange portion floats in the air is made on viewers. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp using an inner lens.

  Depending on the function of the vehicle lamp, the headlamp, fog lamp, backup lamp, etc., such as a lighting lamp for the driver to recognize the situation around the vehicle by irradiation light, a vehicle width lamp, a direction indicator lamp, a stop & tail lamp, etc. In addition, there are roughly classified into two types of display lamps in which a pedestrian around the vehicle or a driver of another vehicle recognizes the movement of the vehicle by irradiation light.

  In general, both of the above two types of lamps have a single function of either illumination or display, and the safe driving of the vehicle is ensured by mounting the lamps having each function individually on the vehicle. To do.

  In this case, since the number of lamps mounted on the vehicle increases, a large space is required for mounting the lamps. As a result, the degree of freedom in designing the vehicle is restricted and the effective use of the vehicle space is limited. It will be.

  Therefore, in order to ensure safe driving of the vehicle and reduce the mounting space of the lamp, a lamp having two functions of illumination and display by a single light source has been proposed.

  As shown in FIG. 5, the lamp body 51 to which the bulb 50 serving as a light source is attached is extended to the side of the vehicle to provide a wraparound portion 52, and the outer lens 53 is provided near the wraparound portion 52 of the lamp body 51. A side marker portion 54 is formed, and a correction step portion 56 that is bent toward the wraparound portion 52 side is formed in the vicinity of the wraparound portion 52 of the inner lens 55.

  The side marker portion 54 of the outer lens 53 is formed with a diffusion step 57 in which a plurality of kamaboko-shaped steps extending in the vertical direction are arranged in the horizontal direction, and a cross section is formed on the side marker portion 54 side of the correction step portion 56. A large number of horizontal refraction steps 58 that are sawtooth-shaped and extend in the vertical direction are formed. On the light source (bulb 50) side, there are a plurality of vertical refraction steps 59 that are sawtooth-shaped and extend in the horizontal direction. Is formed.

  In the vehicular lamp configured as described above, out of the light emitted from the bulb 50, the light emitted toward the front direction of the lamp, the light emitted toward the side direction and the rear direction of the lamp, and reflected by the reflector 60 Both lights are sequentially guided through the inner lens 55 and the outer lens 53 to control the optical path, and are emitted toward the front of the lamp.

  At the same time, the light emitted from the bulb 50 toward the front side of the lamp is sequentially guided through the correction step portion 56 of the inner lens 55 and the side marker portion 54 of the outer lens 53, and the optical path is controlled. Is irradiated.

  At this time, the light emitted from the bulb 50 in the horizontal direction reaches the correction step portion 56 of the inner lens 55, is guided as it is through the passage portion of the correction step portion 56, and is refracted in the rear direction of the lamp in the horizontal refraction step 58, The light is irradiated to the side of the lamp at a required horizontal light distribution angle by the diffusion step 57 of the side marker portion 54 of the outer lens 53.

On the other hand, the light emitted from the bulb 50 in the vertical direction reaches the correction step unit 56 of the inner lens 55, and is converged in the lateral direction of the lamp in the vertical refraction step 59 of the correction step 56, and the required vertical direction on the side of the lamp. (For example, refer to Patent Document 1).
JP 2001-39214 A

  The vehicle lamp described above performs lens cutting on both the inner lens and the outer lens in order to control the optical path of the light emitted from the light source. In recent years, the outer lens is often passed through, and in this case, if the outer lens is provided with a lens cut, the design of the vehicular lamp that gives a sense of depth to the outer outer lens is impaired, resulting in a reduction in the merchantability. It will be. In particular, it is difficult to improve the visibility in the oblique direction unless lens cutting is performed on both the inner lens and the outer lens in order to make it possible to confirm lighting from the left and right 45 degrees of the vehicle.

  In addition, since the outer lens is transparent, it is possible to easily guess the lighting state when viewing the vehicular lamp when it is turned off, and as a result, there is not much change in how it looks when it is turned off and when it is turned on. The design was obsolete.

  In addition, the light traveling in the lateral direction from the lamp is directly irradiated with the light passing through the lens in the same manner as the light traveling in the forward direction. For this reason, a viewer who observes the light traveling in the lateral direction recognizes the irradiated light by viewing the lens, and it can be said that this is insufficient as a presentation method for the display function required for the lamp.

  Therefore, the present invention was devised in view of the above problems, and the object of the present invention is to reduce the cost of a vehicular lamp that also serves as a lighting space function by increasing the degree of freedom of use of irradiation light as well as the illumination function. It is to be realized with.

  In order to solve the above-described problem, a vehicular lamp according to the first aspect of the present invention includes a light-shielding member that includes a reflective surface and a side wall and is open at the front, and an opening inside the light-shielding member. A light source disposed; a translucent member disposed in the vicinity of the periphery of the front opening of the light-shielding member; and an outer lens covering these; the translucent member comprising the light-shielding member and the outer It is characterized in that a flange portion is formed in an area outside the effective light emitting area formed by the reflection surface and the side wall, being spaced apart from both between the covers.

  Further, the invention described in claim 2 of the present invention is characterized in that in the vehicular lamp of claim 1, lens cut and / or coloring is performed.

According to the first aspect of the present invention, when the light source is turned on, the effective light emitting region formed by the reflecting surface and the side wall is irradiated. At that time, part of the light emitted from the light source reaches the flange portion of the translucent member. At this time, the flange portion is disposed in the vicinity of the periphery of the opening, and is located outside the effective light emitting region. Thereby, light can be irradiated in an oblique direction through the flange portion, and the visibility in the oblique direction is improved.
By illuminating the flange portion, it is possible to provide a difference in appearance between when the light source is turned on and when the light source is turned off, giving a new design impression.

  According to the second aspect of the present invention, only the area provided with the reflecting mirror is normally recognized as the lighting area in the vehicular lamp using the reflecting mirror. The flange part which is the outer side of the area | region which provided is brightly visually recognized. As a result, compared with the invention of claim 1, as a design having a three-dimensional effect that is recognized as being even more floating in the air, there is an effect of producing unexpectedness and decoration by light. Moreover, the visibility from the side direction other than the effective irradiation region can be improved when the light source is turned on.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 (the same reference numerals are given to the same parts). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  FIG. 1 is a perspective view of a vehicular lamp according to an embodiment of the present invention cut in the lateral direction. This first embodiment mainly includes a light source 1, a housing 20 to which the light source 1 is attached, and a lens 30 that fits into the housing 20.

  The light source 1 is a bulb with a socket, for example, and includes a wedge base bulb (bulb 2) and a wedge base bulb socket (socket 3).

In the bulb 2, a filament 6 connected to one end of each of a pair of lead wires 5 fixed to a stem is disposed in a hollow inside of a substantially cylindrical glass tube 4, and the other of the lead wires 5 is a socket 3. The inside of the insertion portion (which is also a hermetic sealing portion of the valve) is led out from the end portion to the outside, and is folded back to extend the surface of the insertion portion to a position near the valve portion.
The socket 3 is a power supply terminal that supplies power to the valve 2 that is inserted into the flange portion 8 that extends in the radial direction from the outer peripheral surface of the substantially cylindrical socket body 7 and the opening space 9 into which the insertion portion of the valve 2 is inserted. Is integrated into the socket body 7.

  Then, by inserting the insertion portion of the valve 2 into the opening space 9 of the valve holding portion 10, the lead wire 5 positioned on the surface of the insertion portion of the valve 2 comes into contact with the power supply terminal of the valve holding portion 10 and contacts the valve 2. Electric power is supplied.

  The housing 20 includes a bottom portion 21, a substantially cylindrical side wall portion 23 that rises from the outer peripheral edge portion 22 of the bottom portion 21, and a wing portion 25 that opens outward from the open end 24 of the side wall portion 23. The light source 1 is attached to the bottom portion 21, and the inner surface of the bottom portion 21 is a paraboloid with the position of the filament 6 of the light source 1 as the focal point P, and the optical axis X of the light source 1 passing through the focal point P is the central axis. The concentric circles are divided and arranged in a ring shape. Furthermore, a metal reflecting surface made of a metal film such as aluminum or silver is formed on the inner surface made up of a plurality of ring-shaped paraboloids arranged with steps, and is a composite parabolic reflecting surface 26.

  The inner lens 30 includes a central portion 31 swelled in a spherical shape or an aspheric shape toward the front of the lamp 45, a substantially cylindrical side wall portion 33 rising from the outer peripheral edge portion 32 of the central portion 31, and an outer side of the central portion 31. The flange portion 34 extends from the peripheral edge portion 32 in a ring band shape in a direction substantially perpendicular to the side wall portion 33. A lens cut 35 is applied to one side of the flange portion 34 (the side in the rear direction of the lamp). Thereby, the flange part 34 can give a viewer the impression that it is floating away from both the housing 20 and the outer lens 47 and exists in the middle position between the two. In addition, although the side wall part 33 of the inner lens 30 has shown the example formed over the perimeter corresponding to the opening edge part 24 of the housing 20, it may provide partially. By providing partially, the impression which floated the flange part 34 more hollow can be given.

  The opening end 24 of the side wall portion 23 of the housing 20 and the opening end portion 36 of the side wall portion 33 of the inner lens 30 are fitted via a sealing material 40, and the lamp chamber formed by the housing 20 and the lens 30. 41 is arranged in a state where the light source 1 is supported.

  FIG. 2 shows a cross section of a vehicular lamp 46 provided with the lamp 45. Reference numeral 47 denotes an outer lens provided on the front surface of the lamp 45, which is fixed to a housing (not shown), and the housing is assembled to a vehicle body (not shown). The outer lens 47 is a transparent cover that is not subjected to lens cutting. A light beam L1 emitted from the bulb 2 toward the front direction, that is, toward the inner lens central portion 31, passes through the central portion 31 and irradiates the front direction of the lamp 45 from the central portion 31.

  The light beam L2 emitted from the bulb 2 toward the rear side of the bulb 2, that is, toward the parabolic reflecting surface 26 of the housing 20, is reflected by the composite parabolic reflecting surface 26, and the reflected light becomes substantially parallel light. The lens 30 is directed toward the central portion 31, passes through the central portion 31, and is irradiated from the central portion 31 toward the front of the lamp 45. At this time, the composite parabolic reflection surface 26 is designed to reflect a substantially parallel ray forward, and irradiates the effective light emitting area A1 determined by the reflection surface 26 and the side wall portion 23. Therefore, the effective light emission area A1 can be visually recognized from the outside. In addition, the effective light emission area | region A1 of the lamp | ramp 45 is an area | region pinched | interposed between the virtual straight lines which extended the side wall part 23 to the front direction.

  A light beam L3 emitted from the bulb 2 obliquely forward of the bulb 2, that is, toward the side wall portion 33 of the lens 30, is emitted out of the lamp chamber 41 through the translucent side wall portion 33, and is emitted into the atmosphere. It propagates through the space and faces the flange portion 34 of the lens 30. At this time, as the lens cut 35 provided in the flange portion 34, for example, for enhancing the visibility from the oblique direction with respect to the main irradiation direction of the vehicle lamp, such as the oblique direction of 45 ° to 80 ° of the vehicle lamp 46. A cut with a sawtooth cross section is formed as the cut. Thereby, lighting can be confirmed from the diagonal direction. Although FIG. 1 shows an example in which the lens cut 35 is provided on the entire irradiation side of the flange portion 34 and the outer peripheral edge on the light source side, this is not restrictive. A prism cut for refraction and / or reflection may be provided on one side or both sides.

  With the configuration described above, the flange portion 34 of the inner lens 30 is viewed as if it floats independently in the space at an intermediate position away from any of the light source 1, the reflective surface 26, and the outer lens 47. Therefore, when the lamp 45 of the vehicular lamp 46 is viewed from the front, a bright spot-like illumination light is recognized from the central portion 31 of the lens 30 and a relatively soft ring-shaped decorative effect from the flange portion 34. It is recognized that the auxiliary light having a floating in the hollow, and a design with a three-dimensional effect can be obtained. In addition, an area larger than the effective light emitting area A1 is visually recognized as a light emitting area, giving an impression that the light emitting area of the lamp 45 is enlarged. This improves visibility.

  FIG. 3 is a cross-sectional view showing a second embodiment according to the vehicular lamp of the present invention. Similarly to the vehicle lamp 46 of the first embodiment, the vehicle lamp 46 of the present embodiment includes a lamp 45 having a configuration in which the light source 1 is supported in a lamp chamber 41 formed by the housing 20 and the inner lens 30. In addition, another lamp 48 is provided below the lamp 46 inside the outer lens 47.

The lamp 48 is similar to the lamp 45 described above in that it includes the light source 1, the housing 20 to which the light source 1 is attached, and the inner lens 30 fitted into the housing 20, but in the lamp 45 described above, the central portion of the inner lens 30 is provided. In contrast to the uncut through 31, the present embodiment is different in that a light distribution cut 31 b is applied to the peripheral region 31 a on the flange 34 side of the central portion 31.
Thereby, in the lamp 48, a part of the light rays L1 and L2 out of the light emitted from the light source 1 enters the peripheral region 31a of the inner lens 30, and a predetermined light distribution characteristic is given by the light distribution cut 31b. The The light controlled by the light distribution cut 31b and the light beam L3 controlled by the lens cut 35 of the flange portion 34 form a predetermined light distribution for improving the visibility in the side direction of the lamp 47.

  In the present embodiment, since it is configured as described above, auxiliary light having a relatively soft ring-shaped decorative effect is recognized as floating in the air from both flange portions 34 of the lamp 45 and the lamp 48. It can be a design with a feeling. Also, there are a plurality of flange portions 34 that give the impression of floating in the vehicle lamp 46, and one of them has a light distribution cut 31 b formed on the front surface of the inner lens side wall portion 33. , The impression of floating more hollow can be enhanced.

  FIG. 4 is a sectional view showing a third embodiment according to the vehicular lamp of the present invention. The vehicular lamp of the present embodiment includes a lamp on the inner surface of the outer lens 47 as in the vehicular lamp of the first embodiment described above. In the lamp 46 described in the first embodiment, the inner lens 30 is fixed to the side wall 23 of the housing 20 of the lamp 46. However, in this embodiment, the inner lens 30 is provided with a lens cap-shaped inner lens 70. The point which is used as the lamp 49 is greatly different.

  In the lamp 49, the light source 1 is supported in a lamp chamber 41 formed by the housing 20 having the concave reflecting surface 26 a and the inner lens 30. The reflecting surface 26a extends to the side of the bulb 2, thereby forming an effective light emitting area A1. The inner lens 70 includes a cap portion 71, a flange portion 72, and a connecting portion 73 that extends from the cap portion 71 and supports the flange portion 72. The cap portion 71 covers the bulb 2 of the light source 1 and is fixed to the housing 20 on which the reflection surface 26a is formed by a hook or the like. The flange portion 72 is circumferentially positioned around the bulb 2 like the flange portion 34 of the first embodiment described above, and lens cuts are formed on both surfaces thereof.

At this time, the flange portion can be recognized as auxiliary light having a relatively soft ring-shaped decorative effect floating in the hollow, and can have a three-dimensional design. Further, if colored inner lens 70 is used, colored light can be easily irradiated.
In the case where the cap portion 71 and the flange portion 72 are colored the same, the flange portion 71 is colored in a deep color by passing through both the cap portion 71 and the flange portion 72. Thereby, the flange part 72 which gives the impression which floated in the hollow is observed in a darker color than the cap part, and in the vehicle lamp 46, the impression which floated in the hollow can be given further, and a novel three-dimensional effect is provided. It will be given to the viewer. Further, if the cap portion 71 and the flange portion 72 have different color tones, the flange portion 72 can further appeal a novel design.

  As described above, in the vehicular lamp of the present invention, a part of the light emitted from the light source disposed in the lamp chamber is directed toward the flange portion. The flange portion is located in the hollow space between the outer lens and the reflecting mirror, and by irradiating the flange portion, the viewer feels as if the flange portion is floating in the hollow space. I did it.

  Further, when the flange is provided with a lens cut for improving lateral light distribution characteristics, it is possible to improve the side visibility of the vehicular lamp.

  Moreover, when coloring a flange part, the impression which raised the flange part more can be given.

  The shape of the flange portion is not limited to the circumferential shape. For example, it may be oval, U-shaped, rectangular, or provided with a step. Furthermore, the lens cut provided on the flange is not only a lens cut made of well-known lens cuts such as Fresnel cut, fish-eye cut and knurled cut, or a combination of these, but also diffusion by lens cuts of diffusion processing such as embossing and hairline processing. Processing is also included in the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which cut | disconnected Example 1 concerning the vehicle lamp of this invention in the horizontal direction. It is a longitudinal cross-sectional view of Example 1 concerning the vehicle lamp of this invention. It is a longitudinal cross-sectional view of Example 2 concerning the vehicle lamp of this invention. It is a longitudinal cross-sectional view of Example 3 concerning the vehicle lamp of this invention. It is sectional drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source 2 Bulb 3 Socket 8 Flange part 9 Open space 10 Valve holding part 20 Housing 21 Bottom part 22 Outer peripheral edge part 23 Side wall part 24 Open end part 25 Wing part 26 Compound parabolic reflection surface 30,70 Inner lens 31 Central part 32 Outer Peripheral portion 33 Side wall portion 34, 73 Flange portion 35 Lens cut 40 Sealing material 41 Lamp chamber 45 Lamp 46 Vehicle lamp 47 Outer lens 71 Cap portion A1 Effective light emitting area

Claims (2)

A light-shielding member having a reflective surface and a side wall, with the front opening;
A light source disposed inside the opening of the light shielding member;
A translucent member disposed near the periphery of the front opening of the light shielding member;
With an outer lens covering these,
The translucent member is positioned between the light-shielding member and the outer cover so as to be separated from both, and a flange portion is formed in an area outside the effective light-emitting area formed by the reflective surface and the side wall. A vehicular lamp characterized by that.   The vehicular lamp according to claim 1, wherein the flange portion is lens cut and / or colored.

Images