Exterior Rearview Mirror for Vehicles, Preferably Motor Vehicles

The present invention relates to an exterior rearview mirror for vehicles, preferably motor vehicles, comprising a mirror housing in which a mirror support plate is pivotably supported and in which at least one light source is provided that has coordinated therewith at least one light outlet opening.

Exterior rearview mirrors are known in which the mirror housing is provided with an auxiliary turn signal light. As a light source an incandescent light bulb is usually employed whose light will exit through the light outlet opening of the housing to the exterior. An incandescent light bulb generates a considerable amount of heat within the mirror housing and has a relatively short service life. Furthermore, the incandescent light bulb requires a large space and complicated assembly parts within the mirror housing.

It is therefore an object of the present invention to embody an exterior rearview mirror of the aforementioned kind such that a simple and inexpensive mounting of the light source within the mirror housing is provided.

The exterior rearview mirror for motor vehicles according to the present invention is primarily characterized by:

A housing;

A mirror pane pivotably supported in the housing;

A light source mounted in the housing;

The housing having an outlet opening through which light emitted by the light source exits the housing;

A light guide at least partially filling the outlet opening and connected within the interior of the housing to the light source.

Advantageously, the light guide completely fills the outlet opening.

The light guide expediently consists of clear plastic material.

The light source may be an LED.

Advantageously, the light guide has an outer side and the outer side is positioned at least partially within the outer contour of the housing.

The light guide rests at the inside surface of the housing. Advantageously, the light guide has a main body and at least one support part, wherein the support part rests at the inside surface of the housing.

The support part is preferably an edge portion of the light guide and extends at least partly along the circumference of the main body.

Preferably, the support part has a reduced thickness relative to the thickness of the main body.

The light guide is preferably detachably mounted in the housing.

Preferably, the mirror comprises at least one holder for securing the light guide at the housing.

The at least one holder is detachably secured at the inside surface of the housing. The at least one holder includes at least one seal resting at the inside surface of the housing.

Advantageously, the at least one holder is spaced from the light guide within the area of the outlet opening.

The inventive exterior rearview mirror is provided with a light outlet opening that is at least partially, advantageously completely, filled by a light guide. The light emitted by the light source can be simply guided through the light guide to the light outlet opening. The use of a light guide has the advantage that the light source can be provided in the form of at least one LED. The light guide is then connected to the LED. A simple assembly of the mirror housing and the light guide is possible so that the exterior rearview mirror can be easily assembled and manufactured. The light guide and the light source are advantageously used as an auxiliary turn signal.

The object and advantages of the present invention will appear more clearly from the following specification in conjunction with the accompanying drawings, in which:

FIG. 1 is a cross-section of the mirror housing of the inventive exterior rearview mirror;

FIG. 2 shows a section along the line II--II of FIG. 1;

FIG. 3 shows a section of the fastening location of the light guide of the inventive exterior rearview mirror;

FIG. 4 shows a view onto the back of the mirror housing of the inventive exterior rearview mirror.

The present invention will now be described in detail with the aid of several specific embodiments utilizing FIGS. 1 through 4.

The exterior rearview mirror has a non-represented mirror leg which is used for connecting it to a vehicle, preferably a motor vehicle. The mirror leg has supported thereat a mirror head 1 which is preferably foldable in and counter to the travel direction of the vehicle by providing a joint between the mirror leg and the mirror head. The mirror head 1 has a mirror housing 2 in which, in a manner known per se, a non-represented mirror pane support with a mirror pane attached thereto is pivotably supported. The mirror pane and support are shown in FIG. 1 only schematically by the ball-and-socket joint 3 by which they are pivotably supported in the mirror housing 2. They can be manually or electro-motorically position-adjusted.

The mirror housing 2 has in the direction of travel F of the vehicle a wall 4 facing forward which has at least one outlet opening 5 in which at least one light guide or window 6 is arranged. In the shown embodiment the window 6 extends horizontally transverse to the direction of travel. It is shaped as a band and extends about half the width of the mirror housing 2.

The window 6 is shaped such that its exterior side 7 (FIG. 2 and FIG. 3) forms at least approximately a continuous surface with the wall 4 of the mirror housing 2 in the area of the opening 5. The window 6 has a circumferentially extending edge portion 8 of reduced thickness with which it rests at the inside surface 9 of the mirror housing 2 (FIGS. 2 and 3). Of course, the edge portion 8 must not extend over the entire circumference of the window 6. Advantageously, the edge portion 8 can be provided only at portions of the circumference. Expediently, the edge portion 8 extends over the entire circumference of the window 6 and thus closes off the gap between the edge of the opening 5 and the window 6 so that dirt etc. can not enter the interior of the mirror housing 2. The edge portion 8 is curved across its width so as to match the curvature of the wall 4 of the mirror housing 2. Accordingly, it rests in the direction of its width with a large surface area at the inside surface 9 of the mirror housing 2. The window 6 is inserted from the interior of the mirror housing 2 into the opening 5 to such an extent that the edge portion 8 will come to rest at the inside surface 9 of the mirror housing 2. The edge portion 8 can be secured with an adhesive etc. at the inside surface 9 of the mirror housing 2. In order to provide for a simple exchangeability of the window 6, it is preferably detachably secured at the mirror housing 2. For this purpose, at least one holder 10 is provided which rests at the back side of the window 6 and is detachably connected to the mirror housing 2. The holder 10 is advantageously embodied such that it rests only at the edge portion 8 of the window 6 but is otherwise spaced from the window (see FIG. 1). The holder 10 is provided for this purpose with an edge 11 which rests on the edge portion 8 of the window 6. Advantageously, the edge 11 extends along the circumference of the holder 10. It is secured with at least one screw 12 (FIG. 3) at the mirror housing 2. For this purpose a projection 13 is provided which extends away from the inside surface 9. The screw 12 can be threaded into the projection 13. Additionally, the holder 10 is provided with a seal 14 that rests at the inner surface 9 of the mirror housing 2 (FIGS. 2 and 3). The seal 14 projects past the edge 11 of the holder 10 and prevents that light can be reflected away from the window 6 into the interior of the mirror housing 2 and be deflected to the rear.

The light guide or window 6 is connected to at least one light source 15 (FIG. 1) which is advantageously an LED. It is connected to a circuit board 16 which is arranged in a receiving member 17 at the inside surface 9 of the mirror housing 2. The light source 15 is provided at a narrow side of the substantially rectangular light window (light guide) 6. The light window (light guide) 6 is advantageously comprised of clear plastic material and guides the light emitted by the light source 15 to an end portion 18 which has profilings 19 at its inner side. Here the light is bundled, concentrated, and deflected to the exterior. As shown in FIG. 1, the end portion 18 is the end of the light window 6 remote from the vehicle. The end portion 18 projects from the outer contour of the mirror housing 2 in the outward direction away from the vehicle. The length of the end portion 18 measured transverse to the travel direction F can differ depending on the required specifications. The profilings 19 may extend over the entire length of the light window 6 so that the light can be distributed over the entire light window length to the exterior. The emitted light is easily visible. Since the light window 6 is positioned at the back side of the mirror housing 2, which faces forwardly with respect to the travel direction F, the light can be easily detected from the front of the vehicle and thus alerts oncoming traffic. The end portion 18 of the light window 6 in the shown embodiment is provided in the vicinity of the outer edge of the mirror housing 2 relative to the vehicle so that the emitted light can also be seen by traffic from the side of the vehicle.

The use of LEDs as a light source 15 has the advantage that only minimal heat is developed within the mirror housing 2. Furthermore, LEDs have a long service life. Also, LEDs are very robust, require only minimal space, and can be easily fastened. An LED can be easily mounted on the circuit board 16 by soldering.

The electrical supply line to the circuit board 16 is guided through the non-represented mirror leg of the exterior rearview mirror. Thus, an additional bore in the vehicle body for an electrical supply line is not required. Since an LED does not require a socket as does an incandescent light bulb, there are also no contacting and/or corrosion problems.

The light window 6, in deviation from the embodiment according to FIG. 4, may have any other suitable shape. For example, it is possible to provide a plurality of light windows at the back side of the mirror housing 2. The light window must not have a rectangular contour but can also have any other suitable contour. The light source 15 can be colored, so that differently colored light can be emitted by the light window 6.

The specification incorporates by reference the disclosure of German priority document 297 02 746.8 of Feb. 18, 1997.

The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.