Illumination – Supported by vehicle structure – Housing
Reexamination Certificate
2000-08-28
2001-09-04
O'Shea, Sandra (Department: 2875)
Illumination
Supported by vehicle structure
Housing
C362S548000, C362S546000
Reexamination Certificate
active
06283624
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a shade assembly for headlamp, and more particularly to a shade assembly that includes a shade holder adapted to fix on a lamp holder either in US or European specification and allows heat produced by the lamp covered therein to well dissipate from the shade assembly.
A headlamp A for a motor vehicle typically includes a lamp B
2
fixed on a lamp holder B and a shade B
1
fixed on a shade holder B
3
, as shown in FIG.
1
. The shade holder B
3
is connected to lugs B
4
provided on the lamp holder B. The lamp B
2
usually produces yellowish white light that does not provide good illuminating effect in foggy areas and is therefore selectively replaced with a colored lamp, such as yellow and blue lamps. The lamp holder B has specification varied with its origin. Since there are many countries manufacturing motor vehicles, and lamp holders B made by these countries usually have different specifications, it is necessary to produce shades B
1
of different specifications to adapt to these differently sized lamp holders B. Conventional shades B
1
are made of glass that does not provide good conduction of heat and define a completely closed inner space therein. When the shade B
1
is connected to the lamp holder B to cover the lamp B
2
, heat produced by the lighted lamp B
2
tends to be sealed in the shade B
1
and could not be radiated. Therefore, the lamp B
2
tends to easily break due to overheating after being used for a prolonged time.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a shade assembly for headlamp that permits a lamp covered by it to maintain a designed usable life and is adapted to fix on lamp holders of either US or European specification.
Another object of the present invention is to provide a shade assembly for headlamp, a shade holder of which includes anti-vibration supports with suitable flexibility for supporting the shade, so that the shade is not subject to breaking due to vibration during driving.
To achieve the above and other objects, the shade assembly for headlamp according to the present invention mainly includes a shade holder and a shade seated on a number of anti-vibration supports provided on inner wall surface of the shade holder. The shade holder is also provided on its peripheral wall with a number of radially outward extended fork-headed legs adapted to engage with lugs provided on a lamp holder of the headlamp and thereby causes the shade to cover the lamp no matter what specification the lamp holder has. The shade holder is also provided on its wall with a number of convection holes and the shade is provided on a top with a heat-dissipating hole. Heat produced by the lighted lamp can move out of the shade via the convection holes on the shade holder and the heat-diffusing hole on the top of the shade through the effect of air convection thereof. A ferrule is put around a joint of the shade and the shade holder to fasten them together.
REFERENCES:
patent: 5402325 (1995-03-01), Wisler et al.
patent: 5497298 (1996-03-01), Luallin et al.
patent: 5722763 (1998-03-01), Chen
O'Shea Sandra
Rosenberg , Klein & Lee
Truong Bao
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