JPS58184201A - Light emitting apparatus for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a light emitting device for an automobile. The invention relates in particular to lighting or signaling devices used in motor vehicles, i.e. headlights or lights which conventionally include: (1) An enclosure with an opening in the front (2) A light source installed inside the enclosure (3) A device that receives a part of the luminous flux radiated by the light source and transmits it in the form of a directional beam. (4) a nine-globe mounted in front of the light source at the opening position of the outer enclosure; In conventional devices, a beam regenerator emits a nine-directional beam that is then focused onto the optical axis of the lamp through a filament of the light source. , Ichireru. The globe often has light scattering ridges, and the ridges serve to suitably equalize or redistribute the light flux exiting the device. The above-mentioned "enclosure" may be a container suitable for the light emitting device or a simple recess in the body of an automobile, in which the light source and the luminous flux regenerator are housed. In the following, it must be understood that the illustrations of these two possibilities are always expected and considered as being included and recited in the claims. For aesthetic reasons, the car manufacturer must, in the color scheme, light fixtures and/or headlights, ν1, which are integrated or in perfect harmony with the bodywork of the car, also harmonize with the bodywork of the car when turned off. It has an external shape, preferably the same color as the vehicle body, and when it is supplied with electricity, regardless of whether it is colored or not,
It is desirable to have a lamp and/or a headlamp that emits light in accordance with the standards and therefore has a different external color from the device when it is turned off. Attempts have been made to solve this problem by installing a perforated opaque plate between the light source and the globe. - For example, by placing a tube colored with the color of the car body on the outside of the board, the light emitting device can be confused with the car body when the light is turned off. For this purpose, of course, the area of the non-perforated part of the plate, the total area of the sealing plate σ
It is preferable to choose a long length that allows for a perfect fit. However, on the other hand, in order to avoid blocking most of the luminous flux emitted from the light source and the luminous flux regenerator, it is possible to increase the ratio of the hole area of the plate to the total @J product of the plate. preferable. Reconciling these two conditions is a serious national challenge. The use of perforated plates of this type necessarily results in a considerable loss of luminous flux, f%, so that for a given power a lamp or a pre-extinguisher can no longer meet the standards. do not have. For these reasons, the solution proposed above, consisting of using opaque vertical perforated plates, cannot give complete satisfaction. The present invention attempts to improve the situation by proposing a light emitting device for automobiles that is simple, robust and economical at the same time, and completely solves the above-mentioned problems. For this purpose, the present invention includes a beam regenerator positioned in one envelope so as to tilt the output directional beam toward the lower edge, and a plurality of optical paths exhibiting the same inclination toward the lower edge as the directional beam. stipulate. a colored grid positioned in front of the light source and the luminous flux recorder;
and an optical element having a prismatic element located in front of the grid and for receiving a directional beam passing through the grid and deflecting it in a substantially vertical plane. Furthermore, as an undesirable case, conventional automotive lamps have the possibility that light rays coming from the sun, for example, may be incident on the lamp when it is turned off, and these rays are reflected by the lamp and cause the lamp to turn on. It emits this in the form of a colored beam almost unique to the state. This phenomenon is generally referred to as [Pseudo lighting phenomenon J (Effetallumage phantom
). Needless to say, this phenomenon is particularly dangerous in motor vehicle traffic, where the driver's voice can be confusing. Therefore, it is important to reduce the length to avoid this inconvenience. The present invention is an attempt to propose an excellent solution for this purpose.As it is clear from the above explanation, the present invention almost eliminates the above-mentioned "pseudo lighting phenomenon". This is because it is completely avoided. In a first embodiment according to the invention, the beam regenerator consists of several juxtaposed paddles of prismatic elements located in front of the light source and acting as a refracting device. In another embodiment according to the invention, which is, if necessary, compatible with the first embodiment, the beam regenerator consists of a Fresnel lens located in front of the light source, the focal plane of the wrinkled lens being connected to the filament of the light source. Contains l. In the embodiment of j13 according to the invention, the beam regenerator is formed by a parabolic reflector located behind the light source, and the focus of the reflector → the focus is scattered with the filament of the light source, and - □The optical axis of the reflecting mirror points downward 7jK with an inclination equal to the inclination defined by the grid. Preferably, the light source is provided with a member for coloring the beam exiting the device when the light source is energized, the grid being formed by a plurality of parallel walls of the same slope as the directional beam emitted by the beam regenerator; The walls define the optical path between each other for the directional beam and have a color different from the color of the beam exiting the device. Other characteristics and advantages of the invention will become apparent from reading the following description and from viewing the accompanying drawings, which show by way of non-limiting example. The passage shown in Figure 1, although the outer enclosure is not shown in this figure,
The device of the present invention has a lamp (10) which serves as a light source, and a lamp (10) that receives part of the radiated light beam and directs it toward the front of the device in the form of a nine-directional beam by tilting it toward the lower blade. a luminous flux regenerator, schematically indicated by (20), located in front of the lamp, ie on the opposite side of its base (11), and a luminous flux regenerator (20).
) is located in front of the beam regenerator (20 beams) and has a plurality of parallel optical paths (51) with the same lower blade inclination as the directional beam emitted.
a grid (50) that defines a ti
t consists of a translucent globe (80) with horizontally deflecting prismatic elements (not shown). The trajectory of the light ray that comes out from the lamp filament and hits the luminous flux regenerator (20) is shown as (0-P) and (0-Q) on the diagram.
) is indicated by a dashed line. Lamp < 10 M, conventional and without f, 9, but radiating a light beam at more than 2 solid angles around the longitudinal axis indicated by (A-A) passing through the filament of the lamp. (10) The lamp is shown in a position such that the axis (A-A) is horizontal on the diagram.
However, the optical path (51) determined by the grid (50) C) slope and #1#! It may also be tilted downwardly toward the front of the device. In the embodiment shown in Fig. 3111, a beam regenerator (20
) K is the principal axis Aly7c10) olli ray center axis (A-A
) and its focal plane forms a 7-lens lens that includes the lamp filament (3). On the planar surface of the lens, a plurality of horizontally extending light beams made parallel by the Fresnel lens and grids (5o) are formed and act as refractors to tilt the lower blade according to the inclination of the nine optical paths. A prism (21) is provided. Alternatively, the principal axis of the Fresnel lens is the radiation center axis (A-A) of the lamp and therefore the provided prism (21).
It may be aligned with the axis of The prism (21) is advantageously molded together with the Fresnel lens during the manufacture of the beam regenerator (20). In Figure 1, the central convex lens of the Fresnel lens (22
) and a plurality of circular rings (23) surrounding the central lens (22) (similar to the rings cut out within the convex lens) can be seen. As schematically illustrated in Figures 1 and 82, a preferably opaque front is provided with a substantially opaque colored grid t50M, and in the upper half of the figure a plurality of parallel thin II ( 52), the direction of which is perpendicular to the plane of the ILI diagram and Figure 2 is located on the submerged plane, and the direction is in front of the device, in the ・l direction, [and tilted toward the lower blade, and the light beam is regenerated between them. A plurality of beams (51) having the same inclination as the directional beam emitted from the device (20) are defined, and the directional beam forms a grid fC. For that purpose, the walls of the grid (52) must of course be thin. In the Hajime embodiment, the grid may be made of a slightly translucent and colored substance. Figures 1 and 2 In the embodiment shown in the figure, an optical element is surrounded by an optical element having a prismatic element (82) located in front of the grid (50) and for receiving the directional beam passing through the grid (5o) and deflecting it substantially horizontally. It is integrated into the globe located at the opening of the globe. In this case, it is advantageous to mold the arrow-shaped cylindrical koyanagi (82) together with it when forming the globe. This is also conventional. However, the globe (8o) has small striated ridges for even better dispersion.

[not shown] should be provided. \. Of course, the optical element may be formed as an independent member located within the envelope between the grid (5o) and the globe (80). As previously indicated, it is desirable for the device to have a shape and color that blend in with the rest of the vehicle body when the lights are off. To do so, the grid li (52) (t or the nearly translucent "material" forming the grid) may be made to take on the same color as the exterior body color of the vehicle;
0), namely the optical member and the glove (8
Company 0 is considered unreasonable. Of course, it is also desirable that the award beam that comes out while the device is on has a different color than the color of the device when it is off. This design makes it possible to clearly identify in particular when the vehicle's light fixture is on or off. For this purpose, it is necessary to provide a translucent member that colors the beam exiting the device. This colored element can be formed, for example, by a filament (Fl) or a colored filter (not shown) surrounding the lamp (10), and for which the bulb (12) of the lamp can also be colored. The light beam can be colored gold by forming the regenerator (20). The operation of this device is as follows: When the lamp (10) is lit, a part of the luminous flux radiated by the lamp (10) is transferred to the luminous flux regenerator. (20) and is deflected downward to pass through the grid (5o) unobstructed by it.The globe (8o) is then deflected by the rounding of the prism (82), the pointing which passed through the grid (50) f. i.e. when the lamp is ignited, the device emits a beam of light in the color of the filament) (Faf bending colored filter) or the color of the beam regenerator, depending on the mode in which it is implemented. On the other hand, when the lamp is turned off, the radiation coming from the source of the globe (80) K, i.e. mainly the sun and clouds on cloudy days, passes through the globe (80) and becomes integral with it in the illustrated embodiment. After being deflected by an optical component of It exhibits a uniform appearance, colored or uncolored. Of course, the slope of the grid I! (52), the dimension of the optical path defined between them, the thickness of the grid, as well as the overall slope of the grid For normal diffuse illumination of
80) t - Most of the light passing through the grid (50) and the wall (52
) can be easily determined by one skilled in the art. It turns out that the device according to the invention can almost completely eliminate the above-mentioned "false lighting phenomenon" by itself. A preferred example of the angle of inclination of the optical path (51) defined by the grid (50) and thus of the directional beam defined by the beam regenerator is between 5'' and 25°. According to the example, the main optical axis passes through the filament of the light source (10) and the grid (
It is inclined downwardly at an appropriate angle corresponding to the inclination of the optical path (51) formed by (50) and can be formed only by a Fresnel lens of a known type. In such a case, the lamp filament (F') is located at the focal point of the lens. In the above case, the lamp (10 companies) should preferably be tilted so that its central radiation axis (A-A) is aligned with the main optical axis of the lens. The embodiment shown in FIG. 2 is different from that in FIG. Simply a luminous flux regenerator (
The only difference is the structure of 20). Therefore, only this member will be explained below. In FIG. 2, the prismatic element (82-crown globe) of the optical member is schematically shown in the form of a dashed line parallel to the 80 planes, and is numbered (81). In , the beam regenerator is formed by a plurality of juxtaposed prism elements (schematically represented by a series of dashed lines), which act as refracting elements, accepting a portion of the light rays emitted by the lamp (1o) and converting it into a directional beam. KW, and tilt the optical axis (B-B) of the luminous flux regenerator (2o) downward parallel to K. To explain in more detail, 1.-yt east regenerator is connected to the lamp (1o).
The optical axis (,B
-B) is composed of a plurality of vertical adjacent regions (ZO, Zl, 22. z6e z4) that form separate slopes. It goes without saying that each region (zO) to z4) of the beam regenerator can take on a variety of functionally equivalent shapes. That is, 2 filaments (10)) (optical axis CB-B of the beam regenerator (20) where Fl is located) The central region (zO) centered on f is formed by a diverging 7 Lennel lens,
The adjacent regions (zl) and (z2), on the other hand, are formed by juxtaposed concentric prism elements centered on the aforementioned optical axis CB-B) with internal or external prism surfaces acting as refractors. . According to the first embodiment, the peripheral area (Z3) of the beam regenerator
O and (Z4) uso O + optical axis CB-B)K extend in the buried direction, so it does not have the effect of deflecting the beam in the direction of the optical axis CB-B), but it It serves to secure it within the perimeter. In another Kaya-shaped embodiment, the peripheral area of the beam regenerator (z
3) and (z4) are internal or external elements that act as total reflectors to send the light # emitted from the lamp (10) in the direction of the optical axis (B-B) of the beam regenerator (20). It has a prismatic surface. Furthermore, this latter structure is also applicable to the peripheries of (zl) and (z2), which may likewise have internal or external prismatic surfaces acting as total reflectors. In the special case that the lamp (10) tends to be tilted so that its central radiation axis (A-A) coincides with the optical axis CB-B) of the regenerator, the regenerator is centered around its optical axis CB-B). These regions (zl) and (z2) adjacent to the central region (zO) are in this case of the same width, so as to form a cut-conical tube seeded with a prismatic surface. It has been extended. The luminous flux regenerator (20) has a large solid angle, for example, it is desirable that it surrounds the lamp with a solid angle of 2π or more. It is absolutely necessary that the area of the vessel has a prismatic surface that acts as a total reflector. According to another embodiment (not shown), the beam regenerator is also located behind the lamp (10), i.e. Base (11) Ill. It can be formed by a conventional reflector of parabolic shape located at K, and the focal point of the parabolic reflector coincides with its filament by ψ1, but the optical axis of the reflector is aligned with the grid. It is inclined toward the lower blade at an inclination equal to the inclination of the optical path (51) defined by (50). In this case the beam exiting the device! The D5iIr color can be achieved in one of the methods described above. In this last T-shaped example, however, it is also a BJ practice to color the reflective surface of the reflective mirror. Therefore, the present invention makes it possible to easily realize a headlamp and accessories that emit colored or non-colored light that is different from the color of the outer sheath of the lamp when the lamp is off. This principle also applies to the fact that the light fixtures are integrated with the vehicle body, making them virtually invisible when they are turned off; This also makes it possible to realize a lamp that emits radiation from the source. Of course, the present invention is limited to the embodiments described above.
・ Rather than leaving the 1σ frame of the present invention from these, /
Needless to say, many suitable embodiments can be imagined. Show the cut number diagram, I! FIG. 2 shows an axial sectional view of a device according to another embodiment of the invention. DESCRIPTION OF SYMBOLS 10... Light source, 2o... Luminous flux regenerator, 21... Prism-shaped member (of the luminous flux regenerator), 23-, Renel lens, 50... Grid, 51... Optical path (in the grid) 80 ...Glove, optical member, 82...Prismatic agent Patent attorney Sanro Kimura: 1:.

Claims (1)

[Scope of Claims] (1) A light source, a light flux regenerator that takes a part of the light flux radiated by the light source and sends it to a beam of the device in the form of a directional beam, and an opening in the outer enclosure. In an automotive light-emitting device of the type formed by a ``pure outlet'' comprising a globe attached to the front part of the light beam at the front part of the light beam, the beam regenerator (20) is configured to direct the incoming beam to the lower blade. 5'l (10) and a plurality of optical paths (51) located in front of the beam regenerator (20) and having the same downward slope as the incident beam.
); and a prismatic member (82) positioned in front of the grid to receive the directional beam passing through the grid and to make it substantially horizontal at one angle. For automobiles, characterized by having
5: Device (2) %iFF, characterized in that the beam regenerator (20) is constituted by a plurality of juxtaposed blizzard-like members positioned in front of the light source and serving as a refractor. The emitting jt device according to item 1. (3) The ft East regenerator (20) consists of a Fresnel lens located in front of the light source, and the focal A plane of the Fresnel lens includes a lamp filament (Fl). The light emitting device according to item 2.
) (4) The ft east regenerator (20) is formed by a parabolic reflector located at the rear of the light source (10), and the focal point of the reflector is the light source filament. The light emitting device according to claim 1, characterized in that the optical axis of the reflection is inclined downward at an inclination equal to the inclination of the optical path (51) defined by the grid (50). (5) Reflection The light emitting device according to claim 11!4, characterized in that the reflection direction of the mirror is colored. A light-emitting device according to any one of claims 1 to 4. (7) A light-emitting device according to claim 1, characterized in that the luminous flux regenerator (20) is realized by a colored material. The light emitting device according to item 2 or 5. (8) The grid (50) is formed by a plurality of parallel walls having the same inclination as the nine directional beams sent out by the beam regenerator (20), and has a core wall. form said grid (51) between them, through which the directional beam passes, and the grid is characterized in that it has a color different from the color of the beam exiting the device when the light source is turned on. (9) An optical member located in front of the light source and a globe (the first range of %r'F clearness characterized by being uncolored)
The light emitting device according to any one of Items 8 to 9. (To) Any one of claims 1 to wJ4, characterized in that the optical member that horizontally deflects the directional beam is integrated with the globe (80).''*[el!
″Qf!t・ 11 (1η Light w1 (51) defined by grid (50)
The angle of inclination facing downward 7iK with respect to the horizontal that forms is 5° and 2
The light emitting device according to any one of claims 1 to 10, characterized in that the light emitting device is configured between 1 and 2. ′