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.