Handheld flashlight

Abstract

A handheld flashlight includes a hollow cylinder having a first end and a second end, and a rechargeable battery therein. The handheld flashlight further includes a lamp head with a light source, a window breaker, a charging port and a 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 one or more of the light source, the discharging port, and the connection, and selectively charging the battery from the external power source through the charging 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.

We claim: 
     
         1 . A handheld flashlight, comprising:
 a hollow cylinder having a first end and a second end,   a rechargeable battery disposed within the hollow cylinder,   a lamp head, connected to the first end of the hollow cylinder and including a light source,   a charging-discharging port connectable to an external power source or an external load,   a connection port connectable to positive and negative terminals of a vehicle battery through removable cables, and configured to provide electrical power distributed from the rechargeable battery to start the vehicle, and   a management circuit configured to direct power from the rechargeable battery to the light source, the charging-discharging port, and the connection port, and direct power to the rechargeable battery from the external power source through the charging-discharging port, wherein power distributed to the connection port is greater than power distributed to the light source, 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  further comprising:
 a window breaker connected to the lamp head. 
 
     
     
         7 . The handheld flashlight of  claim 6 , wherein the window breaker includes a punch having a raised and wavy edge to assist in breaking windows. 
     
     
         8 . The handheld flashlight of  claim 1 , wherein the hollow cylinder includes 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  wherein the light source includes an 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 operably connected to the management circuit for controlling one or more light source functions including turning off the light source, an illumination function, the SOS function, or the quick flashing function. 
 
     
     
         12 . A handheld flashlight comprising:
 a hollow cylinder having a first end and a second end and having a rechargeable battery disposed therein;   a lamp head connected at the first end of the hollow cylinder and including a light source; and   a mounting cap connected at the second end of the hollow cylinder and having a charging-discharging port and a connection port extending therethrough, wherein the charging-discharging port and the connection port are connected to the rechargeable battery via a first circuit;   wherein the charging-discharging port is selectively connectable to an external power source or an external load for charging the rechargeable battery;   wherein the connection port is selectively connectable to a positive and negative terminal of a vehicle battery to power a vehicle via the rechargeable battery;   wherein the first circuit manages the distribution of power from the rechargeable battery to the light source, the charging-discharging port, and the connection port, and manages the charging of the rechargeable battery from the external power source or the external load via the charging-discharging port,   wherein power distributed to the connection port via the first circuit is greater than power distributed to the light source; and   wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.   
     
     
         13 . The handheld flashlight of  claim 12  further comprising:
 a window breaker disposed at or proximate to the first end or second end of the hollow cylinder. 
 
     
     
         14 . The handheld flashlight of  claim 13  further comprising:
 a sealing cap disposed on the mounting cap for removably sealing the charging-discharging port and the connection port. 
 
     
     
         15 . The handheld flashlight of  claim 12 , wherein the lamp head includes a lamp base connected to the first end of the hollow cylinder. 
     
     
         16 . The handheld flashlight of  claim 15  further comprising:
 a light-collecting cup and an acrylic translucent lens positioned in sequence from the lamp base, wherein the light-collecting cup is positioned to at least collect, concentrate, and redirect the light emitted from the light source. 
 
     
     
         17 . The handheld flashlight of  claim 13 , wherein the window breaker includes a punch connected to the lamp head. 
     
     
         18 . handheld flashlight of  claim 17 , wherein the punch includes a raised and wavy edge. 
     
     
         19 . The handheld flashlight of  claim 12 , wherein the hollow cylinder includes two pieces of half cylindrical plastic bases. 
     
     
         20 . A handheld flashlight comprising:
 a hollow cylinder having a rechargeable battery disposed therein;   a first circuit connected to the rechargeable battery for managing a charging of the rechargeable battery and a distribution of power from the rechargeable battery;   a charging-discharging port at a first end of the hollow cylinder and connected to the rechargeable battery;   a connection port adjacent to the charging-discharging port at the first end and connected to the rechargeable battery;   a light source at a second end of the hollow cylinder opposite the first end and connected to the rechargeable battery;   wherein the first circuit controls charging the rechargeable battery via the charging-discharging port when connected to an external power source;   wherein the first circuit distributes power from the rechargeable battery to the charging-discharging port, the connection port, and the light source;   wherein the first circuit distributes a first amount of power from the rechargeable battery to the connection port to jumpstart a vehicle via one or more terminals connectable to the vehicle's power supply;   wherein the first circuit distributes a second amount of power from the rechargeable battery to the light source for emitting light from the light source; and   wherein the first amount of power is greater than the second amount of power.