Flashlight using a light emitting diode as a lamp
First Claim
1. A flashlight comprising:
- a conductive barrel for receiving at least one battery therein;
a conductive tail cap detachably coupled to a rear end of the conductive barrel and electrically connecting a minus electrode of the battery accommodated in the conductive barrel to the conductive barrel through a spring; and
a head section detachably coupled to a front end of the conductive barrel, wherein the head section includes a conductive head cap detachably coupled to the front end of the conductive barrel and having a transparent window for radiating a light on a front surface thereof;
an insulation case having a front end and a slot, the front end being inserted into the conductive head cap from a rear end of the conductive head cap towards the transparent window, and the slot being formed at an outer wall thereof and extending lengthwise the insulation case;
a lamp module assembled into an inner rear end of the insulation case and having an insulating substrate, the insulating substrate including an LED at a front center portion thereof, an anode electrode terminal and a cathode electrode terminal of the LED being arranged around the LED, and a metal layer being connected to a positive electrode of the battery and being coated on a rear surface thereof for discharging heat;
a U-shaped first connecting conductor inserted to a peripheral portion of the insulating substrate in order to electrically connect the anode electrode to the metal layer;
a second connecting conductor having a first end and a second end opposite to the first end, the first end being installed in the slot of the insulation case so as to electrically come into contact with an inner portion of the conductive head cap, and the second end extending into the insulation case to be connected with the cathode electrode terminal of the lamp module; and
a collimator lens assembled into an inner portion of the insulation case between the transparent window and the insulating substrate in order to forwardly refract light radiated from the LED.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an LED flashlight using a high-luminance LED as a lamp. The LED flashlight has a conductive barrel, a conductive tail cap, and a head section. The head section includes a conductive head cap, an insulation case, a lamp module, first and second connecting conductors and a collimator lens. The conductive head cap is detachably coupled to a front end of the conductive barrel and has a transparent window. A front end of the insulation case is inserted into the head cap towards the transparent window. A slot is formed at an outer wall of the insulation case. The lamp module is assembled into an inner rear end of the insulation case and has an insulating substrate including an LED. An anode and a cathode electrode of the LED are formed at a peripheral portion of the lamp module. The lamp module has an insulating substrate formed at a rear surface thereof with a metal layer connected to a positive electrode of a battery. The first connecting connector has a U-shape and is inserted to peripheral portion of the insulating substrate. A first end of the second connecting connector is installed in the slot of the insulation case and a second end of the second connecting connector extends into the insulating case. The collimator lens assembled into the insulation case between the transparent window and the insulation substrate.
88 Citations
30 Claims
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1. A flashlight comprising:
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a conductive barrel for receiving at least one battery therein;
a conductive tail cap detachably coupled to a rear end of the conductive barrel and electrically connecting a minus electrode of the battery accommodated in the conductive barrel to the conductive barrel through a spring; and
a head section detachably coupled to a front end of the conductive barrel, wherein the head section includes a conductive head cap detachably coupled to the front end of the conductive barrel and having a transparent window for radiating a light on a front surface thereof;
an insulation case having a front end and a slot, the front end being inserted into the conductive head cap from a rear end of the conductive head cap towards the transparent window, and the slot being formed at an outer wall thereof and extending lengthwise the insulation case;
a lamp module assembled into an inner rear end of the insulation case and having an insulating substrate, the insulating substrate including an LED at a front center portion thereof, an anode electrode terminal and a cathode electrode terminal of the LED being arranged around the LED, and a metal layer being connected to a positive electrode of the battery and being coated on a rear surface thereof for discharging heat;
a U-shaped first connecting conductor inserted to a peripheral portion of the insulating substrate in order to electrically connect the anode electrode to the metal layer;
a second connecting conductor having a first end and a second end opposite to the first end, the first end being installed in the slot of the insulation case so as to electrically come into contact with an inner portion of the conductive head cap, and the second end extending into the insulation case to be connected with the cathode electrode terminal of the lamp module; and
a collimator lens assembled into an inner portion of the insulation case between the transparent window and the insulating substrate in order to forwardly refract light radiated from the LED. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A flashlight comprising:
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a conductive barrel for receiving at least one battery therein;
a tail cap detachably coupled to a rear end of the conductive barrel and electrically connecting a minus electrode of the battery accommodated in the conductive barrel to the conductive barrel through a spring;
a head case having a rear end into which a front end of the conductive barrel is inserted and a front end having a diameter larger than a diameter of the rear end, the head case being screw-coupled with the front end of the conductive barrel and moving along an axial direction of the conductive barrel in such a manner that the front end of the conductive barrel reaches a stopping jaw formed at an inner portion of the head case when the front end of the conductive barrel is screw-coupled into the head case;
a head cap detachably coupled to the front end of the head case and having a transparent window formed at a front surface thereof through which light is radiated;
a lamp module including an insulating substrate inserted into the head case and rested on the stopping jaw, a plurality of high-luminance LEDs aligned on a front surface of the insulating substrate so as to forwardly radiate light, a center terminal formed at a center of a rear surface of the insulating substrate to permit anode electrodes of the high-luminance LEDs to be commonly connected thereto and making contact with a plus electrode of the battery, and a ring terminal formed at a peripheral portion of the center to permit cathode electrodes of the high-luminance LEDs to be commonly connected thereto and making contact with the front end of the conductive barrel; and
a reflective mirror installed in an internal space, which is defined by the head case and the head cap coupled to each other, in order to forwardly reflect light radiated from the high-luminance LEDs. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A flashlight comprising:
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a conductive barrel having a head section, a housing section and a locking jaw formed at a boundary between the head section and the housing section, the housing section receiving at least one battery therein;
a tail cap detachably coupled to a rear end of the conductive barrel and having a push button, the push button electrically connecting a minus electrode of the battery accommodated in the conductive barrel to the conductive barrel through a spring;
a head cap detachably coupled to the front end of the head case and having a transparent window formed on a front surface thereof through which light is radiated;
a lamp module including an insulation substrate inserted into the head case to thereby be rested on the locking jaw, a plurality of LEDs aligned on a front surface of the insulating substrate so as to forwardly radiate light, a center terminal formed at a center of a rear surface of the insulating substrate to permit anode electrodes of the LEDs to be commonly connected thereto and slightly protruded in a rear direction thereof to make contact with a positive electrode of the battery, and a ring terminal formed at a peripheral portion of the center terminal provided on the rear surface of the insulating substrate to permit cathode electrodes of the LEDs to be commonly connected thereto and making contact with the locking jaw; and
a reflective mirror installed in an internal space, which is defined by the head case and the head cap coupled to each other, and forwardly reflecting light radiated from the high-luminance LEDs.
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Specification