摘要:
One electrical lead from an LED package is soldered to an inner electrically conductive member positioned and electrically isolated from an outer electrically conductive member by electrically insulating material while a second electrical lead and a neutral lead from the LED are soldered to the outer electrically conductive member so that heat is transferred from an LED die within the LED package to the outer electrically conductive member and then to a thermally conductive outer casing with a thermal path that minimizes thermal resistance.
摘要:
A portable lighting device that provides different user interfaces that may be selected by the user. Each user interface may provide one or more operational modes, such as on mode, power save mode, strobe mode or momentary mode. After a user interface is selected, the user may select on of the operational modes. The portable lighting device may be a flashlight.
摘要:
A portable lighting device, such as a flashlight, with a mechanical power switch and multiple operating modes is provided. The mechanical power switch is disposed in series with the controller for the lighting device and acts as the user interface to the controller to change modes of operation. Because the mechanical power switch is in series with the controller, the portable lighting device does not consume battery power when the mechanical switch is open. A state machine coupled to the controller is polled by the controller each time it is powered up to determine the operational mode of the lighting device.
摘要:
A flashlight having a locking mechanism for securing a head skirt to a head assembly is disclosed. A circuit for temporarily remember the mode of operation of the flashlight is also disclosed.
摘要:
A light emitting diode (“LED”) module with improved thermal characteristics is provided. The module includes an LED, a first circuit board, a second circuit board, a lower insulator, an upper insulator, a lower contact, upper contacts, and a heat sink. Preferably, the heat sink comprises an outer housing and a contact ring. The LED and the heat sink are attached to the first circuit board via solder. In addition to serving as a substrate for the LED, the first circuit board (which contains a plurality of thermally conductive layers connected by vias) facilitates the transfer of heat away from the LED to the heat sink. The module also has improved mechanical and electrical properties, including redundant electrical connections, stable mechanical connections, and a shock-absorbing lower contact. The lower insulator can also be configured to prevent misalignment of the power source with the lower contact when the module is used in a flashlight or other lighting device.
摘要:
A charger is provided that includes an improved contact for holding a flashlight and electrically connecting to a charging contact of the flashlight. The charger includes an area for receiving the head of a flashlight, and an area for receiving the barrel of a flashlight. The contact is disposed about the area for receiving the barrel. The contact is deflectable and includes portions that expand and mate with the charging contact of the flashlight to hold the flashlight in place while electrically connecting to the charging contact for supplying electrical energy to a rechargeable battery contained in the flashlight.
摘要:
A flashlight in accordance with the present invention includes a chamber, end cap, head assembly and lamp holder assembly. The end cap includes a bowed tripod portion to facilitate standing the flashlight on a flat surface. The head assembly includes a reflector and a lens. In one embodiment of the invention, the head assembly includes an elliptical reflector. In accordance with another embodiment of the present invention, the flashlight having a elliptical reflector is matched with a negative or planar lens. In accordance with another embodiment of the present invention, the head assembly includes an hyperbolic reflector. In accordance with another embodiment of the present invention, the flashlight having a hyperbolic reflector is matched with a positive or planar lens. In accordance with another aspect of the present invention, the flashlight includes electrode connections which prevent the conduction of electrical energy from batteries which are improperly aligned within the flashlight. In another embodiment, the lamp holder assembly includes a lamp socket having a lamp guide which provides a guide for installing lamp bulbs into the lamp socket and also provides a secure position for the lamp bulb. In another embodiment, the lamp holder assembly further includes a fluorescent coating or additive which illuminates light in otherwise dark conditions, thereby facilitating lamp replacement in the less than desirable light conditions. In another embodiment, the flashlight comprises a head assembly attached to the chamber which is rotatable relative to the chamber to cause electrical coupling of a lamp and one or more batteries retained by a chamber. In another embodiment of the flashlight, the spare lamp is held secure by the lamp holder assembly until the user of the flashlight rotates the lamp holder assembly to align a spare lamp opening with the spare lamp.
摘要:
An improved tail cap assembly having features that allow direct electrical contact between a battery and the barrel of a flashlight is provided. The tail cap assembly includes a cap and a conductive spring. The cap is adapted to engage with the flashlight barrel. The tail cap assembly includes a cap which has a seat, two ears extending from the seat and gaps between the two ears. A conductive spring that includes a base portion is disposed between the ears. At least a part of the base portion is arranged to bear against the seat. And the base portion extends outward in a radial direction through at least one of the gaps. The conductive spring may be a coil spring, and the base portion is oval or asymmetrical shaped.