US20120320603A1 - Lamp assembly - Google Patents
Lamp assembly Download PDFInfo
- Publication number
- US20120320603A1 US20120320603A1 US13/159,797 US201113159797A US2012320603A1 US 20120320603 A1 US20120320603 A1 US 20120320603A1 US 201113159797 A US201113159797 A US 201113159797A US 2012320603 A1 US2012320603 A1 US 2012320603A1
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- United States
- Prior art keywords
- wall
- wall segments
- segments
- reflecting
- lamp assembly
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/048—Optical design with facets structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
Definitions
- the invention relates to a lamp assembly that has a relatively high light-emitting efficiency.
- Taiwanese Patent No. M356854 disclose a conventional lamp assembly 1 that includes a light source 11 and a reflecting shell 12 retaining the light source 11 therein.
- the reflecting shell 12 has a convex portion 125 that projects inwardly toward the light source 11 , and a plurality of convex mirrors 121 that protrude inwardly from an inner surface thereof, so that light generated by the light source 11 can be reflected by the convex mirrors 121 to project out of the reflecting shell 12 .
- the presence of the convex mirrors 121 also enlarges the illumination range of the conventional lamp assembly 1 .
- the reflecting shell 12 is configured to be substantially elliptical, so that the convex mirrors 121 may have different distances from and different angles relative to the light source 11 .
- the convex mirrors 121 are identical, a part of the light reflected by one of the convex mirrors 121 may have a brightness different from that of another part of the light reflected by another one of the convex mirrors 121 , thereby resulting in an uneven light output from the conventional lamp assembly 1 .
- the object of the present invention is to provide a lamp assembly that has a relatively high efficiency and an even brightness of light output.
- a lamp assembly of the present invention comprises a light source, a shell wall, and a reflecting unit.
- the shell wall defines a receiving space that retains the light source therein, and has a central wall unit and a pair of extending wall segments.
- the central wall unit has a base wall segment and a pair of connecting wall segments.
- the base wall segment is mounted with the light source, and has side ends opposite to each other in a left-right direction, and longitudinal ends opposite to each other in a front-rear direction transverse to the left-right direction.
- the connecting wall segments extend respectively from the longitudinal ends of the base wall segment.
- Each of the connecting wall segments has a distal end. The distal ends of the connecting wall segments are opposite to each other in the front-rear direction.
- the extending wall segments extend respectively from the side ends of the base wall segment, interconnect the connecting wall segments and cooperate with the connecting wall segments to define an opening in spatial communication with the receiving space.
- Each of the extending wall segments has a distal end.
- the distal ends of the extending wall segments are opposite to each other in the left-right direction.
- a distance between the distal ends of the connecting wall segments is larger than that between the distal ends of the extending wall segments.
- the reflecting unit includes a plurality of first reflecting members configured to be convex and protruding inwardly from the extending wall segments, and a plurality of second reflecting members configured as prisms and protruding inwardly from the central wall unit. Light generated from the light source toward the shell wall is reflected by the first and second reflecting members and emitted out of the shell wall through the opening.
- FIG. 1 is a schematic sectional view of a conventional lamp assembly disclosed in Taiwanese Patent No. M356854;
- FIG. 2 is another sectional view of the conventional lamp assembly disclosed in Taiwanese Patent No. M356854;
- FIG. 3 is a bottom view of a first preferred embodiment of a lamp assembly according to the invention.
- FIG. 4 is a fragmentary sectional view of the first preferred embodiment taken along line IV-IV in FIG. 3 ;
- FIG. 5 is another fragmentary sectional view of the first preferred embodiment taken along line V-V in FIG. 3 ;
- FIG. 6 is a bottom view of a second preferred embodiment of a lamp assembly according to the invention.
- FIG. 7 is a fragmentary sectional view of the second preferred embodiment taken along line VII-VII in FIG. 6 .
- the first preferred embodiment of a lamp assembly 2 comprises a light source 21 and a shell wall 23 defining a receiving space 239 that retains the light source 21 therein.
- the shell wall 23 has a central wall unit 230 that has a base wall segment 231 and a pair of connecting wall segments 233 .
- the base wall segment 231 is mounted with the light source 21 , and has side ends 2311 opposite to each other in a left-right direction (L), and longitudinal ends 2312 opposite to each other in a front-rear direction (F) transverse to the left-right direction (L).
- the connecting wall segments 233 extend respectively from the longitudinal ends 2312 of the base wall segment 231 .
- Each of the connecting wall segments 233 has a distal end. The distal ends of the connecting wall segments 233 are opposite to each other in the front-rear direction (F).
- the shell wall 23 further has a pair of extending wall segments 232 that extend respectively from the side ends 2311 of the base wall segment 231 , that interconnect the connecting wall segments 233 , and that cooperate with the connecting wall segments 233 to define an opening 234 in spatial communication with the receiving space 239 .
- Each of the extending wall segments 232 has a distal end. The distal ends of the extending wall segments 232 are opposite to each other in the left-right direction (L). A distance (D 1 ) between the distal ends of the connecting wall segments 233 is larger than a distance (D 2 ) between the distal ends of the extending wall segments 232 .
- the lamp assembly 2 of this invention further comprises a reflecting unit 24 including a plurality of first reflecting members 241 and a plurality of second reflecting members 242 .
- the first reflecting members 241 are configured to be convex and protrude integrally and inwardly from an inner surface of the base wall segment 231 and the extending wall segment 232 .
- the second reflecting members 242 are configured as prisms and protrude integrally and inwardly from an inner surface of the connecting wall segments 233 .
- the reflecting unit 24 further includes a specular reflecting layer 243 formed on the first and second reflecting members 241 , 242 by vacuum plating.
- the specular reflecting layer 243 can increase the light output efficiency of the lamp assembly 2 of this invention.
- the connecting wall segments 233 are located farther from the light source 21 compared to the extending wall segments 232 , the prismatic configuration of the second reflecting members 242 would increase the reflection of the light projected from the light source 21 toward the connecting wall segments 233 , thereby resulting in even light output of the lamp assembly 2 of this invention.
- the second preferred embodiment of the lamp assembly 2 has a structure similar to that of the first embodiment.
- the main difference between this embodiment and the previous embodiment resides in the following.
- the base wall segment 231 has a middle wall portion 235 and a pair of side wall portions 236 flanking the middle wall portion 235 and connected respectively to the extending wall segments 232 .
- the first reflecting members 241 protrude inwardly from the extending wall segment 232 and the middle wall portion 235 of the base wall segment 231 .
- the second reflecting members 242 protrude inwardly from the connecting wall segments 233 and the side wall portions 236 of the base wall segment 231 .
- the second preferred embodiment has the same advantages as those of the first preferred embodiment.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A lamp assembly includes a shell wall defining a receiving space that retains a light source therein, and a reflecting unit. The shell wall has a central wall unit and a pair of connecting wall segments. The central wall unit has a base wall segment and a pair of connecting wall segments extending respectively from longitudinal ends of the base wall segment. The extending wall segments extend respectively from side ends of the base wall segment, interconnect the connecting wall segments and cooperate with the connecting wall segments to define an opening in spatial communication with the receiving space. A distance between the distal ends of the connecting wall segments is larger than that between the distal ends of the extending wall segments. The reflecting unit includes convex first reflecting members protruding inwardly from the extending wall segments, and prismatic second reflecting members protruding inwardly from the central wall unit.
Description
- 1. Field of the Invention
- The invention relates to a lamp assembly that has a relatively high light-emitting efficiency.
- 2. Description of the Related Art
- As shown in
FIGS. 1 and 2 , Taiwanese Patent No. M356854 disclose aconventional lamp assembly 1 that includes alight source 11 and a reflectingshell 12 retaining thelight source 11 therein. The reflectingshell 12 has aconvex portion 125 that projects inwardly toward thelight source 11, and a plurality ofconvex mirrors 121 that protrude inwardly from an inner surface thereof, so that light generated by thelight source 11 can be reflected by theconvex mirrors 121 to project out of the reflectingshell 12. The presence of theconvex mirrors 121 also enlarges the illumination range of theconventional lamp assembly 1. The reflectingshell 12 is configured to be substantially elliptical, so that theconvex mirrors 121 may have different distances from and different angles relative to thelight source 11. However, since theconvex mirrors 121 are identical, a part of the light reflected by one of theconvex mirrors 121 may have a brightness different from that of another part of the light reflected by another one of theconvex mirrors 121, thereby resulting in an uneven light output from theconventional lamp assembly 1. - Therefore, the object of the present invention is to provide a lamp assembly that has a relatively high efficiency and an even brightness of light output.
- Accordingly, a lamp assembly of the present invention comprises a light source, a shell wall, and a reflecting unit. The shell wall defines a receiving space that retains the light source therein, and has a central wall unit and a pair of extending wall segments. The central wall unit has a base wall segment and a pair of connecting wall segments. The base wall segment is mounted with the light source, and has side ends opposite to each other in a left-right direction, and longitudinal ends opposite to each other in a front-rear direction transverse to the left-right direction. The connecting wall segments extend respectively from the longitudinal ends of the base wall segment. Each of the connecting wall segments has a distal end. The distal ends of the connecting wall segments are opposite to each other in the front-rear direction. The extending wall segments extend respectively from the side ends of the base wall segment, interconnect the connecting wall segments and cooperate with the connecting wall segments to define an opening in spatial communication with the receiving space. Each of the extending wall segments has a distal end. The distal ends of the extending wall segments are opposite to each other in the left-right direction. A distance between the distal ends of the connecting wall segments is larger than that between the distal ends of the extending wall segments. The reflecting unit includes a plurality of first reflecting members configured to be convex and protruding inwardly from the extending wall segments, and a plurality of second reflecting members configured as prisms and protruding inwardly from the central wall unit. Light generated from the light source toward the shell wall is reflected by the first and second reflecting members and emitted out of the shell wall through the opening.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:
-
FIG. 1 is a schematic sectional view of a conventional lamp assembly disclosed in Taiwanese Patent No. M356854; -
FIG. 2 is another sectional view of the conventional lamp assembly disclosed in Taiwanese Patent No. M356854; -
FIG. 3 is a bottom view of a first preferred embodiment of a lamp assembly according to the invention; -
FIG. 4 is a fragmentary sectional view of the first preferred embodiment taken along line IV-IV inFIG. 3 ; -
FIG. 5 is another fragmentary sectional view of the first preferred embodiment taken along line V-V inFIG. 3 ; -
FIG. 6 is a bottom view of a second preferred embodiment of a lamp assembly according to the invention; and -
FIG. 7 is a fragmentary sectional view of the second preferred embodiment taken along line VII-VII inFIG. 6 . - Before the present invention is described in greater detail, it should be noted that like elements are denoted by the same reference numerals throughout the disclosure.
- As shown in
FIGS. 3 and 4 , the first preferred embodiment of alamp assembly 2 according to the present invention comprises alight source 21 and ashell wall 23 defining areceiving space 239 that retains thelight source 21 therein. - The
shell wall 23 has acentral wall unit 230 that has abase wall segment 231 and a pair of connectingwall segments 233. Thebase wall segment 231 is mounted with thelight source 21, and hasside ends 2311 opposite to each other in a left-right direction (L), andlongitudinal ends 2312 opposite to each other in a front-rear direction (F) transverse to the left-right direction (L). The connectingwall segments 233 extend respectively from thelongitudinal ends 2312 of thebase wall segment 231. Each of the connectingwall segments 233 has a distal end. The distal ends of the connectingwall segments 233 are opposite to each other in the front-rear direction (F). Theshell wall 23 further has a pair of extendingwall segments 232 that extend respectively from theside ends 2311 of thebase wall segment 231, that interconnect the connectingwall segments 233, and that cooperate with the connectingwall segments 233 to define anopening 234 in spatial communication with thereceiving space 239. Each of the extendingwall segments 232 has a distal end. The distal ends of the extendingwall segments 232 are opposite to each other in the left-right direction (L). A distance (D1) between the distal ends of the connectingwall segments 233 is larger than a distance (D2) between the distal ends of the extendingwall segments 232. - As further shown in
FIG. 5 , thelamp assembly 2 of this invention further comprises a reflectingunit 24 including a plurality of first reflectingmembers 241 and a plurality of second reflectingmembers 242. The first reflectingmembers 241 are configured to be convex and protrude integrally and inwardly from an inner surface of thebase wall segment 231 and the extendingwall segment 232. In this embodiment, the second reflectingmembers 242 are configured as prisms and protrude integrally and inwardly from an inner surface of the connectingwall segments 233. The reflectingunit 24 further includes a specular reflectinglayer 243 formed on the first and second reflectingmembers light source 21 toward theshell wall 23 is reflected by the first and second reflectingmembers shell wall 23 through theopening 234. The presence of thespecular reflecting layer 243 can increase the light output efficiency of thelamp assembly 2 of this invention. - Although the connecting
wall segments 233 are located farther from thelight source 21 compared to the extendingwall segments 232, the prismatic configuration of the second reflectingmembers 242 would increase the reflection of the light projected from thelight source 21 toward the connectingwall segments 233, thereby resulting in even light output of thelamp assembly 2 of this invention. - Referring to
FIGS. 6 and 7 , the second preferred embodiment of thelamp assembly 2 according to the present invention has a structure similar to that of the first embodiment. The main difference between this embodiment and the previous embodiment resides in the following. In this embodiment, thebase wall segment 231 has amiddle wall portion 235 and a pair ofside wall portions 236 flanking themiddle wall portion 235 and connected respectively to the extendingwall segments 232. The first reflectingmembers 241 protrude inwardly from the extendingwall segment 232 and themiddle wall portion 235 of thebase wall segment 231. The second reflectingmembers 242 protrude inwardly from the connectingwall segments 233 and theside wall portions 236 of thebase wall segment 231. The second preferred embodiment has the same advantages as those of the first preferred embodiment. - While the present invention has been described in connection with what are considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (5)
1. A lamp assembly comprising:
a light source;
a shell wall defining a receiving space that retains said light source therein, and having a central wall unit that has
a base wall segment that is mounted with said light source, and that has side ends opposite to each other in a left-right direction, and longitudinal ends opposite to each other in a front-rear direction transverse to the left-right direction, and
a pair of connecting wall segments that extend respectively from said longitudinal ends of said base wall segment, each of said connecting wall segments having a distal end, said distal ends of said connecting wall segments being opposite to each other in the front-rear direction, and
a pair of extending wall segments that extend respectively from said side ends of said base wall segment, that interconnect said connecting wall segments, and that cooperate with said connecting wall segments to define an opening in spatial communication with said receiving space, each of said extending wall segments having a distal end, said distal ends of said extending wall segments being opposite to each other in the left-right direction, a distance between said distal ends of said connecting wall segments being larger than that between said distal ends of said extending wall segments; and
a reflecting unit including
a plurality of first reflecting members configured to be convex and protruding inwardly from said extending wall segments, and
a plurality of second reflecting members configured as prisms and protruding inwardly from said central wall unit;
wherein light generated from said light source toward said shell wall is reflected by said first and second reflecting members and emitted out of said shell wall through said opening.
2. The lamp assembly as claimed in claim 1 , wherein said second reflecting members protrude inwardly from said connecting wall segments of said central wall unit.
3. The lamp assembly as claimed in claim 2 , wherein said reflecting unit further includes a specular reflecting layer plated on said first and second reflecting members.
4. The lamp assembly as claimed in claim 1 , wherein:
said base wall segment has a middle wall portion and a pair of side wall portions flanking said middle wall portion and connected respectively to said extending wall segments; and
said second reflecting members protrude inwardly from said connecting wall segments and said side wall portions of said base wall segment.
5. The lamp assembly as claimed in claim 4 , wherein said reflecting unit further includes a sepcular reflecting later plated on said first and second reflecting members.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/159,797 US8322894B1 (en) | 2011-06-14 | 2011-06-14 | Lamp assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US13/159,797 US8322894B1 (en) | 2011-06-14 | 2011-06-14 | Lamp assembly |
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US8322894B1 US8322894B1 (en) | 2012-12-04 |
US20120320603A1 true US20120320603A1 (en) | 2012-12-20 |
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US13/159,797 Expired - Fee Related US8322894B1 (en) | 2011-06-14 | 2011-06-14 | Lamp assembly |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4704661A (en) * | 1986-08-25 | 1987-11-03 | General Electric Company | Faceted reflector for headlamps |
US6000816A (en) * | 1996-08-02 | 1999-12-14 | Koito Manufacturing Co., Ltd. | Vehicle head lamp |
US6481872B1 (en) * | 1998-10-22 | 2002-11-19 | Koito Industries, Ltd. | Astral lamp |
US6773150B2 (en) * | 1996-08-28 | 2004-08-10 | Robert Bosch Gmbh | Lighting device for a vehicle |
US20060013011A1 (en) * | 2003-08-04 | 2006-01-19 | Guide Corporation | Glare prevention feature |
US7108412B2 (en) * | 2003-03-31 | 2006-09-19 | Koito Manufacturing Co., Ltd. | Headlamp for vehicle |
US8197101B2 (en) * | 2008-12-09 | 2012-06-12 | Phoenix Electric Co. Ltd. | Reflector for use in light emitting device and light emitting device using the same |
-
2011
- 2011-06-14 US US13/159,797 patent/US8322894B1/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4704661A (en) * | 1986-08-25 | 1987-11-03 | General Electric Company | Faceted reflector for headlamps |
US6000816A (en) * | 1996-08-02 | 1999-12-14 | Koito Manufacturing Co., Ltd. | Vehicle head lamp |
US6773150B2 (en) * | 1996-08-28 | 2004-08-10 | Robert Bosch Gmbh | Lighting device for a vehicle |
US6481872B1 (en) * | 1998-10-22 | 2002-11-19 | Koito Industries, Ltd. | Astral lamp |
US7108412B2 (en) * | 2003-03-31 | 2006-09-19 | Koito Manufacturing Co., Ltd. | Headlamp for vehicle |
US20060013011A1 (en) * | 2003-08-04 | 2006-01-19 | Guide Corporation | Glare prevention feature |
US8197101B2 (en) * | 2008-12-09 | 2012-06-12 | Phoenix Electric Co. Ltd. | Reflector for use in light emitting device and light emitting device using the same |
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US8322894B1 (en) | 2012-12-04 |
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