Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers
Reexamination Certificate
2001-07-13
2003-02-25
Philogene, Haissa (Department: 2821)
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Flashers
C315S307000, C315S362000, C362S800000, C362S227000, C362S276000
Reexamination Certificate
active
06525487
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a light driver for shoe, especially to a light driver providing two kinds of voltage levels for the flashing light on shoe.
BACKGROUND OF THE INVENTION
FIG. 1
shows a prior art light driver comprising a button
1
a
, a controller
2
a
, a plurality of LEDs (light emitting diodes)
3
a
and a power source
4
a
. The button
1
a
is connected to an input of the controller
2
a
and the controller
2
a
has an output connected to the plurality of LEDs
3
a
. The power source
4
a
generally provides 3V voltage to the LEDs
3
a
and the controller
2
a
. The button
1
a
is pressed to generate a triggering signal to the controller
2
a
, which then drives the LEDs
3
a
to lighten in various flash modes.
In above flashing light can use LEDs of various colors to provide more colorful light. However, the LEDs of different colors require driving voltages of various levels. For example, the red, yellow, and green LEDs need driving voltage of 3V. The blue, white, purple and pink LEDs need driving voltage above 3.6V, otherwise, those LEDs will have dimmish light.
The conventional light driver generally uses an operation voltage of mono level. If the operation voltage complies with the operation voltage of the red, yellow, and green LEDs, the blue, white, purple and pink LEDs will have dimmish light. On the contrary, if the operation voltage complies with the operation voltage of the blue, white, purple and pink LEDs, the red, yellow, and green LEDs have risk of burning down.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a light driver providing two kinds of voltage levels for the flashing light on shoe.
To achieve above object, the present invention provides a light driver for shoe having a power source, a switch unit, a controller, and a plurality of LEDs. The power source is composed of a first battery and a second battery in serial arrangement to provide two kinds of levels for LEDs with different characteristics. The switch unit is connected to an input of the controller, and the LEDs are connected to an output of the controller. The controller receives a triggering signal from the switch unit and drives the LEDs to flash.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
REFERENCES:
patent: 4797864 (1989-01-01), Stano et al.
patent: 5644858 (1997-07-01), Bemis
patent: 5813148 (1998-09-01), Guerra
patent: 5821697 (1998-10-01), Weber
patent: 5895326 (1999-04-01), Cozza et al.
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