Double-Ended High Intensity Discharge Lamp and Manufacturing Method Thereof

Abstract

A double-ended high intensity discharge lamp includes a luminous tube and reflective layer covering at a reflective portion provided on at least a portion of the luminous tube for reflecting light emitted from an illuminator supported in the luminous tube towards the reflective portion to project towards another opposing side of the luminous tube.

What is claimed is: 
     
         1 . A double-ended high intensity discharge lamp, comprising:
 a luminous tube;   at least one illuminator supported inside said luminous tube;   a plurality of electrical members securely fastened in said luminous tube, wherein said electrical members are connected to said at least one illuminator to supply power to operate said at least one illuminator, wherein said electrical member further comprises at least two terminals permanently fixed in two sealing ends of said luminous tube respectively, and   a reflecting layer provided on at least a portion of said luminous tube for reflecting light emitted from said at least one illuminator towards said reflective layer to project the light in a predetermined angle.   
     
     
         2 . The double-ended high intensity discharge lamp, as recited in  claim 1 , further comprising at least two retainers disposed against an inner surface of said luminous to hold said illuminator in a center of said luminous tube. 
     
     
         3 . The double-ended high intensity discharge lamp, as recited in  claim 1 , wherein said reflecting layer covers one side of said luminous tube such that the light emitted from said illuminator towards said side is reflected by said reflecting layer to combine with the light emitted towards another opposing side of said luminous tube so as to project towards said another opposing side. 
     
     
         4 . The double-ended high intensity discharge lamp, as recited in  claim 2 , wherein said reflecting layer covers one side of said luminous tube such that the light emitted from said illuminator towards said side is reflected by said reflecting layer to combine with the light emitted towards another opposing side of said luminous tube so as to project towards said another opposing side. 
     
     
         5 . The double-ended high intensity discharge lamp, as recited in  claim 3 , wherein said luminous tube has a reflective portion on said side, which has an arc-shape and a curvature provided with respect to said reflecting layer, wherein said reflecting layer is attached on said inner surface of said reflective portion of said luminous tube. 
     
     
         6 . The double-ended high intensity discharge lamp, as recited in  claim 4 , wherein said luminous tube has a reflective portion on said side, which has an arc-shape and a curvature provided with respect to said reflecting layer, wherein said reflecting layer is attached on said inner surface of said reflective portion of said luminous tube. 
     
     
         7 . The double-ended high intensity discharge lamp, as recited in  claim 3 , wherein said luminous tube has a reflective portion on said side, which has an arc-shape and a curvature provided with respect to said reflecting layer, wherein said reflecting layer is formed between said inner surface and an outer surface of said reflective portion of said luminous tube. 
     
     
         8 . The double-ended high intensity discharge lamp, as recited in  claim 4 , wherein said luminous tube has a reflective portion on said side, which has an arc-shape and a curvature provided with respect to said reflecting layer, wherein said reflecting layer is formed between said inner surface and an outer surface of said reflective portion of said luminous tube. 
     
     
         9 . The double-ended high intensity discharge lamp, as recited in  claim 5 , wherein said reflecting layer is extended between said two sealed ends of said luminous tube axially and radially on said reflective portion. 
     
     
         10 . The double-ended high intensity discharge lamp, as recited in  claim 6 , wherein said reflecting layer is extended between said two sealed ends of said luminous tube axially and radially on said reflective portion. 
     
     
         11 . The double-ended high intensity discharge lamp, as recited in  claim 7 , wherein said reflecting layer is extended between said two sealed ends of said luminous tube axially and radially on said reflective portion. 
     
     
         12 . The double-ended high intensity discharge lamp, as recited in  claim 8 , wherein said reflecting layer is extended between said two sealed ends of said luminous tube axially and radially on said reflective portion. 
     
     
         13 . The double-ended high intensity discharge lamp, as recited in  claim 1 , wherein each of said electrical members further comprises at least one connector connecting said at least one illuminator with said at least two terminals on each end of said at least one illuminator and a distributor disposed between said connector and one of said at least two terminals to have dynamic stability of said illuminator against said luminous tube, wherein both said at least one connector and said distributor are made of conductive material. 
     
     
         14 . The double-ended high intensity discharge lamp, as recited in  claim 2 , wherein each of said electrical members further comprises at least one connector connecting said at least one illuminator with said at least two terminals on each end of said at least one illuminator and a distributor disposed between said connector and one of said at least two terminals to have dynamic stability of said illuminator against said luminous tube, wherein both said at least one connector and said distributor are made of conductive material. 
     
     
         15 . The double-ended high intensity discharge lamp, as recited in  claim 13 , wherein said distributor further comprises at least two curved stress distributing arms which forms at least two distributing cavities respectively and said distributing arms are integrally formed in curved line extended from said connector to one of said terminals. 
     
     
         16 . The double-ended high intensity discharge lamp, as recited in  claim 14 , wherein said distributor further comprises at least two curved stress distributing arms which forms at least two distributing cavities respectively and said distributing arms are integrally formed in curved line extended from said connector to one of said terminals. 
     
     
         17 . The double-ended high intensity discharge lamp, as recited in  claim 1 , wherein the reflecting layer is made of a reflective material selected from the group consisting of aluminum and silver. 
     
     
         18 . The double-ended high intensity discharge lamp, as recited in  claim 2 , wherein the reflecting layer is made of a reflective material selected from the group consisting of aluminum and silver. 
     
     
         19 . The double-ended high intensity discharge lamp, as recited in  claim 16 , wherein the reflecting layer is made of a reflective material selected from the group consisting of aluminum and silver. 
     
     
         20 . The double-ended high intensity discharge lamp, as recited in  claim 17 , wherein the reflecting layer is made of a reflective material selected from the group consisting of aluminum and silver.