Illumination – Light source and modifier – Laser type
Reexamination Certificate
2002-07-16
2003-11-25
Husar, Stephen (Department: 2875)
Illumination
Light source and modifier
Laser type
C362S240000, C362S247000, C362S285000, C362S519000, C362S545000, C362S310000, C362S307000
Reexamination Certificate
active
06652122
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority of Taiwanese application no. 090212439, filed on Jun. 23, 2001.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a lighting apparatus, more particularly to a low-power high-intensity lighting apparatus that is easy to assemble and convenient to replace.
2. Description of the Related Art
A conventional high-intensity lighting apparatus, such as a warning indicating lamp, an emergency illumination equipment, an incandescent lamp, etc., usually relies on an incandescent bulb or fluorescent lamp as a light source, with an optional reflector for luminance enhancement. The aforesaid conventional high-intensity lighting apparatus is disadvantageous in that power consumption of the light source is relatively large.
Referring to
FIGS. 1 and 2
, to overcome the aforesaid drawback of large power consumption, another conventional lighting apparatus
1
is shown to include a housing
2
, a pair of circuit boards
3
mounted on the housing
2
, and a plurality of light emitting diodes
4
mounted on one of the circuit boards
3
. The light emitting diodes
4
emit light directly and outwardly of the housing
2
without processing by a focusing element. Therefore, to achieve a certain degree of luminance, a large quantity of light emitting diodes
4
is needed, thereby resulting in a complicated circuit arrangement.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide a low-power high-intensity lighting apparatus that is easy to assemble and convenient to replace.
Another object of the present invention is to provide a low-power high-intensity lighting apparatus with a variable focusing effect.
Accordingly, a low-power high-intensity lighting apparatus of this invention comprises a housing, a lamp base mounted in the housing, and a lamp unit mounted on the lamp base. The lamp unit includes at least one light emitting diode and generates light that propagates rearwardly toward a curved reflector of the housing and that is reflected forwardly by the reflector.
Preferably, the lamp base is mounted adjustably on the reflector to achieve a variable focusing effect.
REFERENCES:
patent: 6238073 (2001-05-01), Ito et al.
Husar Stephen
Trop Pruner & Hu P.C.
Tsidulko Mark
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