Abstract:
A work lamp comprises a protective sleeve, a cap, and a lamp device received in the protective sleeve including two sockets and an auxiliary shell member all supported by a plurality of elastic members, thereby ensuring the work lamp to be non-fragile while operating.

Description:
FIELD OF THE INVENTION  
         [0001]    The present invention relates to work lamps and more particularly to a non-fragile work lamp with improved characteristics.  
         BACKGROUND OF THE INVENTION  
         [0002]    Conventionally, a work lamp is used in an environment where the lighting position is liable to change such as automobile repairing station. It is often found that the work lamp is collided with other object or fallen on the ground. However, most previous work lamps are fragile, thus causing inconvenience to workers. Therefore, improvement is desirable in order to overcome the above drawback of prior art.  
         SUMMARY OF THE INVENTION  
         [0003]    It is an object of the present invention to provide a non-fragile work lamp comprising: a protective sleeve; a lamp device received in the protective sleeve, the lamp device including a first base at one end, the first base including an on/off switch, a rear connection member for electrically connecting to a power source, and a first recess; a first socket in the first recess; a lamp having one end secured to the first socket; a plurality of first radial elastic members having one ends fixed on the surface of the first socket for preventing the first socket from contacting the inner wall of the first recess; a first axial elastic member having one end fixed on the rear side of the first socket; a second base at the other end projected beyond the protective sleeve the second base including a second recess; an auxiliary shell member in the second recess with the other end of the lamp secured thereto; a plurality of second radial elastic members having one ends fixed on the surface of the auxiliary shell member for preventing the auxiliary shell member from contacting the inner wall of the second recess; a second axial elastic member having one end fixed on the front side of the auxiliary shell member; an elongate half cylindrical member connected between the first and second bases for receiving the lamp; a second socket in the front of the auxiliary shell member for receiving a bulb; and a plurality of third radial elastic members having one ends fixed on the surface of the second socket for preventing the second socket from contacting the inner wall of the second recess; and a cap secured to the second base.  
           [0004]    According to one aspect of the present invention, the rear connection member is a hose having a clamp or a magnet at the free end.  
           [0005]    According to another aspect of the present invention, there is provided a battery case enclosing the rear connection member and being electrically connected to the rear connection member.  
           [0006]    According to still another aspect of the present invention, the auxiliary shell member is formed of a heat resistant material.  
           [0007]    The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]    [0008]FIG. 1 is an exploded view of a first preferred embodiment of work lamp according to the invention;  
         [0009]    [0009]FIG. 2 is a sectional view of the assembled FIG. 1 work lamp;  
         [0010]    [0010]FIG. 3 is a perspective view of a second preferred embodiment of work lamp according to the invention; and  
         [0011]    [0011]FIG. 4 is a perspective view of a third preferred embodiment of work lamp according to the invention. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0012]    Referring to FIGS. 1 and 2, there is shown a work lamp constructed in accordance with the invention comprising a protective sleeve  10  and a lamp device  20  received in the protective sleeve  10 . Lamp device  20  comprises a first base  21  at one end, a second base  22  at the other end, and an elongate half cylindrical member  23  connected between the first and second bases  21  and  22 . First base  21  comprises an on/off switch  210  on the surface, a threaded rod  211  projected rearward for electrically connecting to a power source and a first recess  212 . A lamp  24  is secured to first socket  25 . A plurality of radial elastic members (e.g., spring)  26  have one ends fixed on the surface of first socket  25  for preventing first socket  25  from contacting the inner wall of first recess  212 . An axial elastic member (e.g., spring)  26  has one end fixed on the rear side of first socket  25 . Second base  22  comprises a second recess  220 . An auxiliary shell member  27  is provided in second recess  220 . The front end of lamp  24  is inserted in and secured to auxiliary shell member  27 . Auxiliary shell member  27  is formed of heat resistant material such as bakelite. Similarly, a plurality of radial elastic members (e.g., spring)  26  have one ends fixed on the surface of auxiliary shell member  27  for preventing auxiliary shell member  27  from contacting the inner wall of second recess  220 . An axial elastic member (e.g., spring)  26  has one end fixed on the front side of auxiliary shell member  27 . Lamp  24  is provided in the elongate half cylindrical member  23 . The front end of second base  22  is projected beyond protective sleeve  10 . A second socket  280  is in the front of auxiliary shell member  27  for receiving a bulb  28 . Also, a plurality of radial elastic members (e.g., spring)  26  having one ends fixed on the surface of second socket  28  for preventing second socket  28  from contacting the inner wall of second recess  220 . A cone  29  is put on bulb  38 . A piece of glass  290  is provided on the front end of cone  29 . A cap  30  is threadedly secured to the front end of second base  22 . The provision of first socket  25  and auxiliary shell member  27  can prevent lamp  24  from shaking in an operating state. Further, the provision of second socket  25  can prevent bulb  24  from shaking in the operating state. This ensures the work lamp of the invention to be non-fragile.  
         [0013]    Referring to FIG. 3, there is shown a second preferred embodiment of work lamp according to the invention. The difference between first and second preferred embodiments is that the threaded rod  211  is replaced by a hose  40  having a clamp  41  (or a magnet  42 ) provided at the free end so as to fasten to a suitable work place.  
         [0014]    Referring to FIG. 3, there is shown a third preferred embodiment of work lamp according to the invention. The difference between first and third preferred embodiments is that the threaded rod  211  is replaced by a cylindrical battery case  50  with a predetermined number of cells stored therein.  
         [0015]    While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.