Patent Publication Number: US-2004042224-A1

Title: Exhaust pipe with light and sound effect

Description:
FIELD OF THE INVENTION  
       [0001] This invention relates to an exhaust pipe, and more particularly, to an exhaust pipe with colorful lighting and music effect.  
       BACKGROUND OF THE INVENTION  
       [0002] One of the conventional exhaust pipes on the market comprises neon light tubes to light the exhaust pipe, which uses an inner tube connected and secured to the tail of the exhaust pipe and the inner tube is then secured in an outer tube, which is designed to have neon light tubes on its outer surface, the neon light tubes are kept in a distance from the inner tube that allows air to flow through there, whereas the air flows through the space between the inner tube and the outer tube meeting with the exhaust gas produces turbulence. When the light projects onto the turbulence, the light also goes with the turbulence, thus produces a floating neon light.  
       [0003] However, the neon light tubes are easy to break during shipping, storage, and are a bit complicated to install.  
       SUMMARY OF THE INVENTION  
       [0004] It is the primary object of the present invention to provide an exhaust pipe with light and sound effect, which is easy to install and to take apart.  
       [0005] It is another object of the present invention to provide an exhaust pipe with light and sound effect, which is more colorful and more attractive.  
       [0006] It is a further object of the present invention to provide an exhaust pipe with light and sound effect, which is more solid and easy to replace.  
       BRIEF DESCRIPTION OF THE DRAWINGS  
       [0007]FIG. 1 is an exploded view of the present invention;  
       [0008]FIG. 2 is an enlarged sectional view taken along circle  2  of FIG. 1;  
       [0009]FIG. 3 is a side sectional view of the present invention;  
       [0010]FIG. 4 is an enlarged view of circle  4  of FIG. 3; and  
       [0011]FIG. 5 is a side sectional view of a second embodiment of the present invention.  
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0012] An exhaust pipe with light and sound effect comprises an inner tube  1 , an outer tube rear section  2 , an outer tube front section  3 , a circuit board  4 , a plurality of light emitting diodes  5 , a retaining ring  6 , an insulating sleeve  7 , water proof glue  8  and a lamp shield  9 , as shown in FIG. 1.  
     [0013] The inner tube  1  is secured to the outer tube rear section  2  with fixtures  11 , and maintains a space from the outer tube rear section  2 , the front end of the outer tube rear section  2  corresponding to the front end of the inner tube  1  is secured with the outer tube front section  3  and fastened by rivets  21 .  
     [0014] The circuit board  4  comprises a number of light emitting diodes  5  on one side thereof, and is wrapped by the lamp shield  9 . The lamp shield  9  is formed with a front shield  91  and a rear shield  92  to cover both the circuit board  4  and the light emitting diodes  5 . The lamp shield  9  has a hole for an electric wire  41  from the circuit board  4  to extend there through.  
     [0015] The outer tube front section  3 , as shown in FIG. 2, comprises a reduced end forming a step surface  31  at the inner portion of the reduced end for positioning of the lamp shield  9 , a groove  32  is formed next to the step surface  31  to position the retaining ring  6  therein. The outer tube front section  3  further comprises a hole  33 , as shown in FIG. 3, for an insulating sleeve  7  to insert there through and the electric wire  41  to go through the insulating sleeve  7  and extend outwardly, the electric wire  41  is then connected to a control circuit, which will not be described hereinafter, to control conduction of the light emitting diodes  5 .  
     [0016] Further, the control circuit may be pre-programmed to control conduction of the light emitting diodes S by means of gears, speed or RPM of the vehicle to vary the lights when the vehicle is moving. This lighting device may also be treated as a warning signal when the engine is in idle status. The control circuit may also control a sound system at the same time.  
     [0017] The circuit board  4  equipped with various colors of light emitting diodes  5 , is placed in the outer tube front section  3 , against the step surface  31 , and the retaining ring  6  is placed in the groove  32  of the outer tube front section  3  and engages with the circuit board  4 , so that the circuit board  4  is secured by the step surface  31  and the retaining ring  6  at place. The outer tube front section  3 , at this moment, may be connected and secured with the outer tube rear section  2  by the rivets  21 , this completes the installation of the present invention.  
     [0018] In order to prevent water or humid from entering the circuit board  4  and the light emitting diodes  5 , the connecting area between the lamp shield  9  and the step surface  31  may be applied with the water proof glue  8 , as shown in FIG. 4.  
     [0019] According to the previous description of the present invention, there is only a single circuit board is applied, the other embodiment may have two circuit boards  4  and  4 ′, two sets of light emitting diodes  5  and  5 ′ and two sets of retaining ring  6  and  6 ′, as shown in FIG. 5. Although this design has double many of the parts, the design still remains the same. This design provides more colorful lighting and sound effect.