LED light dedusting/cooling system

• US 9,273,862 B2
• Filed: 07/02/2014
• Issued: 03/01/2016
• Est. Priority Date: 07/02/2014
• Status: Expired due to Fees

• Current Assignee: Asia Vital Components Company Limited
• Original Assignee: Asia Vital Components Company Limited
• Inventors: Zeng, Xiao-Zhen
• Primary Examiner(s): Sengdara, Vongsavanh
• Assistant Examiner(s): Vuong, Thai T
• Application Number:
  US14/322,903
• Publication Number:
  US 20160003462A1
• Time in Patent Office: 608 Days
• Field of Search: 257/13, 257/88, 257/98, 313/46, 362/382, 362/84, 362/231
• US Class Current: 1/1
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 15/00 Protecting lighting devices from damage protection from thermal damage F21V29/00; gas-tight or water-tight arrangements F21V31/00
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 29/63 using electrically-powered vibrating means; using ionic wind
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An LED light dedusting/cooling system includes a housing receiving therein a control member, a fan, a heat sink and an LED module. The fan and the LED module are respectively disposed on two opposite sides of the heat sink. The LED light dedusting/cooling system further includes a vibrator received in the housing and disposed on one side of the heat sink proximal to the fan and positioned between the heat sink and the fan. In operation, the vibrator can vibrate between the heat sink and the fan to shake (or shock) off the dust or alien articles attaching to the fan and the heat sink. Then, the fan operates to blow out the dust from the housing.

Claims

1. An LED light dedusting/cooling system comprising:

a housing receiving therein a control member, a fan, a heat sink and an LED module, the fan and the LED module being respectively disposed on two opposite sides of the heat sink; and

a vibrator received in the housing and disposed on one side of the heat sink proximal to the fan and positioned between the heat sink and the fan;

wherein the housing includes a light seat and a light shade mated with the light seat, a winding passage being annularly defined between a circumference of the light seat and a circumference of the light shade;

wherein the winding passage includes a first passage positioned between a free end of a radial flange of a nonlinear rim and an axial skirt section of the nonlinear rim, the first passage vertically extending from a first end of the winding passage to communicate with a second passage, the second passage horizontally extending to communicate with a third passage, the third passage vertically extending to a second end of the winding passage to communicate with a receiving space of the light seat.

2. The LED light dedusting/cooling system as claimed in claim 1, wherein the light seat has an upward extending bottom section, which defines the receiving space, an upper end of the bottom section being formed with the nonlinear rim defining an opening in communication with the receiving space, multiple connection sections being disposed on an inner side of the receiving space, the light shade having a front end and a rear end, the front end being formed with a window, multiple connected sections being disposed at the rear end of the light shade and mated with the multiple connection sections of the receiving space of the light seat, the light shade having the radial flange formed on outer circumference of the light shade and a lower skirt section corresponding to the nonlinear rim, the radial flange having a root section integrally connected with the outer circumference of the light shade and the free end protruding to the nonlinear rim, the lower skirt section being positioned under the root section of the radial flange, the winding passage being defined between the nonlinear rim, the radial flange and the lower skirt section.

3. The LED light dedusting/cooling system as claimed in claim 2, wherein the nonlinear rim includes the radial flange and the axial skirt section, the radial flange radially protruding from the upper end of the bottom section of the light seat, the axial skirt section axially protruding from a radially protruding end of the radial flange.

4. The LED light dedusting/cooling system as claimed in claim 3, wherein the winding passage has the first end in communication with outer side of the housing and the second end in communication with an interior of the housing.