US 11,940,137 B2
Explosion-proof lamp
Chunhuai Wang, Shanghai (CN); Haijun Man, Shanghai (CN); Yuru Li, Shanghai (CN); and Rotton Lu, Shanghai (CN)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Appl. No. 17/794,606
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE)
PCT Filed Jan. 22, 2021, PCT No. PCT/IB2021/000020
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/148879, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 202020143513.9 (CN), filed on Jan. 22, 2020.
Prior Publication US 2023/0071049 A1, Mar. 9, 2023
Int. Cl. F21V 25/12 (2006.01); F21V 15/01 (2006.01); F21V 29/77 (2015.01)
CPC F21V 25/12 (2013.01) [F21V 15/01 (2013.01); F21V 29/773 (2015.01)] 11 Claims
OG exemplary drawing
 
1. An explosion-proof lamp, characterized by comprising a light source cavity and a drive cavity independent of each other, wherein
the drive cavity is an increased-safety cavity, is provided therein with a power driver and a junction box, is connected to the light source cavity via a conducting wire by means of an insulating sleeve, and drives and controls a light source in the light source cavity to be turned on;
the light source cavity is a flameproof cavity, and comprises a heat sink, a glass cover, the light source, and a metal frame for securing the glass cover;
the glass cover and the heat sink are connected to form the light source cavity, and the light source is mounted in the light source cavity;
the metal frame comprises (i) an outer vertical edge and an outward protruding shoulder configured to receive a first seal ring, and (ii) an inward protruding shoulder configured to receive a second seal ring,
wherein a portion of the heat sink extends in a vertical direction downwards past the light source and is disposed around the outer vertical edge of the metal frame and seated against the outward protruding shoulder of the metal frame, the first seal ring being disposed on the protruding shoulder of the metal frame and between the metal frame and the heat sink,
wherein an edge portion of the glass cover extends outwardly and is seated against the inward protruding shoulder of the metal frame, the second seal ring being disposed on the inward protruding shoulder of the metal frame and between the metal frame and the glass cover; and
the heat sink comprises a heat dissipation bottom plate and a plurality of heat dissipation fins annularly mounted on the heat dissipation bottom plate, absorbs heat generated in the light source cavity, and dissipates the heat into an external environment.