Handheld flashlight

Abstract

A handheld flashlight is provided. The handheld flashlight includes a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery; a lamp head, connected the first end of the hollow cylinder and comprising a light source; a window breaker, configured to break windows for emergency vehicular escape; a charging-discharging port, selectively connected to an external power source or an external load; a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables; and a management circuit, selectively applying power from the battery to the light source, the charging-discharging port, and the connection, and selectively charging the battery from the external power source through the charging-discharging port; wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.

1 . A handheld flashlight, comprising
 a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery,   a lamp head, connected the first end of the hollow cylinder and comprising a light source,   a window breaker, configured to break windows for emergency vehicular escape,   a charging-discharging port, selectively connected to an external power source or an external load,   a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables, and providing electrical power to start the vehicle, and   a management circuit, selectively applying power from the rechargeable battery to the light source, the charging-discharging port, and the connection port, and selectively charging the rechargeable battery from the external power source through the charging-discharging port,   wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.   
     
     
         2 . The handheld flashlight of  claim 1 , wherein a mounting cap is connected to the second end of the hollow cylinder, the charging-discharging port and the connection port are disposed on the mounting cap. 
     
     
         3 . The handheld flashlight of  claim 2  further comprising a sealing cap, disposed on the mounting cap for removably sealing the charging-discharging port and the connection port. 
     
     
         4 . The handheld flashlight of  claim 1 , wherein the lamp head comprises a lamp base connected to the first end of the hollow cylinder. 
     
     
         5 . The handheld flashlight of  claim 4 , wherein a light-collecting cup and an acrylic translucent lens are positioned in sequence from the lamp base, the light-collecting cup collects, concentrates and redirects the light emitted from the light source. 
     
     
         6 . The handheld flashlight of  claim 1 , wherein the window breaker comprises a punch, connected to the lamp head. 
     
     
         7 . The handheld flashlight of  claim 6 , wherein the punch comprises a raised and wavy edge to assist in breaking windows for emergency vehicular escape. 
     
     
         8 . The handheld flashlight of  claim 1 , wherein the hollow cylinder comprises two pieces of half cylindrical plastic bases. 
     
     
         9 . The handheld flashlight of  claim 1  further comprising a metallic case, having an interference fit outside the hollow cylinder. 
     
     
         10 . The handheld flashlight of  claim 1  further comprising the light source comprises a LED light for illumination, a signal light for SOS function, and a flashing light for quick flashing function. 
     
     
         11 . The handheld flashlight of  claim 10  further comprising a button, disposed on the hollow cylinder and selecting functions between off, the illumination function, the SOS function, and the quick flashing function. 
     
     
         12 . A handheld flashlight, comprising
 a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery,   a lamp head, connected the first end of the hollow cylinder and comprising a light source, wherein the light source comprises a LED light for illumination, a signal light for SOS function, and a flashing light for quick flashing function,   a window breaker, configured to break windows for emergency vehicular escape,   a charging-discharging port, selectively connected to an external power source or an external load,   a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables, and providing electrical power to start the vehicle,   a management circuit, selectively applying power from the rechargeable battery to the light source, the charging-discharging port, and the connection port, and selectively charging the rechargeable battery from the external power source through the charging-discharging port,   a metallic case, having an interference fit outside the hollow cylinder, and   a button, disposed on the hollow cylinder and selecting functions between off, the illumination function, the SOS function, and the quick flashing function,   wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user,