Illumination – Elongated source light unit or support – With light modifier
Reexamination Certificate
2000-01-19
2001-09-18
Sember, Thomas M. (Department: 2875)
Illumination
Elongated source light unit or support
With light modifier
C362S263000, C362S539000, C362S543000, C362S351000, C362S519000, C362S307000
Reexamination Certificate
active
06290371
ABSTRACT:
This application claims Paris Convention priority from DE 199 02 629.7 filed Jan. 23, 1999 the complete disclosure of which is hereby incorporated by reference.
BACKGROUND OF THE INVENTION
The invention concerns a light for a vehicle having a reflector, at least one neon lamp and a cover plate.
DE 94 13 286 U1 describes an auxiliary brake light for an automobile which is disposed on the inside rear shelf of the vehicle and is directed towards the rear window. A curved fluorescent tube can be disposed within the lighting housing. Although fluorescent tubes can effect a very high light yield, the neon lamp is visible as a bright stripe and the light intensity decreases rapidly with distance. In addition, the connector elements must be covered with additional components. Another disadvantage is that, for insertion or exchange of the fluorescent tubes, either the cover plate has to be removed or the entire lamp must be dismounted.
WO-A-98 12 471 describes a rear light in which a plurality of fluorescent tubes are disposed in front of the reflector.
SUMMARY OF THE INVENTION
Departing from DE 94 13 286 U1 it is the underlying purpose of the invention to provide a light in which a neon lamp can be easily inserted and with which the neon lamp can be exchanged in a simple fashion.
This purpose is achieved in accordance with the invention with a light of the above mentioned kind in that the reflector is provided with a shield for the direct light travelling towards the cover plate.
This shield prevents the neon lamp from being visible through the cover plate as a bright stripe. In addition, this shield prevents the neon lamp from blinding other drivers and passengers due to its high light intensity and associated light density. The illumination and the overall lighting effect is thereby improved. Possible lights include rear lights, brake lights, blinkers, backup lights etc.
A preferred improvement provides that the neon lamp can be inserted into the reflector from the backside thereof. The reflector has an opening having a shape adapted to that of the neon light through which the neon light can be completely or partially inserted into the reflector from the rear, i.e. from the backside. This has the substantial advantage that the cover plate must not be detached from the reflector in order to insert or exchange the neon lamp and the cover plate can even be permanently mounted to the reflector. An additional advantage of the light in accordance with the invention, is that the neon lamp can be easily attached to the reflector from inside the vehicle and even optionally without the use of tools. In another embodiment, the neon lamp can be inserted from the front.
A further improvement provides that the shield is configured to reflect light at the side facing the neon lamp, in particular, to deflect the light towards the reflector. The light directly incident from the neon lamp onto the shield is deflected by the shield, in particular by its reflector, towards the main reflector of the lamp so that this light can be utilized and is not destroyed behind the cover.
In accordance with the invention, the shield is connected to the reflector via one or a plurality of braces. The braces have the advantage that the large length of the neon lamp is associated with nearly no shadowing.
The shield is advantageously formed on the reflector and is preferentially integral therewith. In this fashion, the shield and the reflector can be simultaneously evaporation coated and must not be subsequently processed further. The integral configuration has the additional advantage that the shield is exactly positioned in or on the reflector.
In an embodiment of the invention, the shield is partially permeable to light so that a black stripe is not produced in the cover. The partial optical permeability of the shield can thereby be selected in such a fashion that the intensity of the light passing through the shield is as large as the intensity of the light reflected from the reflector.
An improvement provides that the shield has a surface structure on the side facing away from the neon lamp and/or is tinted. This facilitates optical or design effects.
In an additional embodiment, the reflector has a corrugated or stepped reflector surface. Instead of a parabolic shape, the corrugated reflector can reflect the light towards the cover plate in dependence on the configuration of the corrugations. This can also be achieved using a stepped reflector surface.
The back side of the reflector preferentially has holding elements and or plug contacts for the neon lamp. The plug contacts for the neon lamp are thereby covered so that no additional covering is necessary. The holding elements can be used to precisely position and mount the tubes of the neon lamp. The tubes can e.g. directly seat on the holding elements.
Further advantages, details and features of the invention can be extracted from the dependent claims as well as from the following description in which particularly preferred embodiments are described in detail with reference to the drawing. The features disclosed in the description and the claims and shown in the drawing can be important to the invention individually or collectively in arbitrary combination.
REFERENCES:
patent: 5347435 (1994-09-01), Smith et al.
patent: 5782550 (1998-07-01), Ohashi et al.
patent: 5879073 (1999-03-01), Hori et al.
patent: 6079860 (2000-06-01), Ito
patent: 6132068 (2000-10-01), Katsumata
patent: 6 15 690 (1935-06-01), None
patent: 9 30 612 (1955-06-01), None
patent: 94 13 286 (1994-12-01), None
patent: 44 17 695 (1995-11-01), None
patent: 197 37 550 (1998-03-01), None
patent: 08244524 (1996-09-01), None
patent: 08238981 (1996-09-01), None
patent: WO 98 12 471 (1998-03-01), None
Feger Rolf
Lendle Reiner
Sember Thomas M.
Valeo Beleuchtung Deutschland GmbH
Vincent Paul
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