A linear light-emitting diode (LED)-based solid-state lamp comprising electric shock and arc prevention switches, thermal protection devices, and bi-pins at the opposite ends normally operates with either an electronic ballast or AC mains. When such a lamp is installed in or uninstalled from a lamp fixture with the bi-pins in lamp sockets, the electric shock and arc prevention switches with double controls can work with the electronic ballast to prevent an electric arc from occurring not only between the lamp sockets and the bi-pins but also between electrical contacts in the electric shock and arc prevention switches. Together with the thermal protection devices, the lamp eliminates any possible fire hazard associated with the electric arc while maintaining electric shock free for installers.

A linear light-emitting diode (LED)-based solid-state lamp comprising electric shock and arc prevention switches, thermal protection devices, and bi-pins at the opposite ends normally operates with either an electronic ballast or AC mains. When such a lamp is installed in or uninstalled from a lamp fixture with the bi-pins in lamp sockets, the electric shock and arc prevention switches with double controls can work with the electronic ballast to prevent an electric arc from occurring not only between the lamp sockets and the bi-pins but also between electrical contacts in the electric shock and arc prevention switches. Together with the thermal protection devices, the lamp eliminates any possible fire hazard associated with the electric arc while maintaining electric shock free for installers.

The invention relates to an explosion-proof housing and to a method for connecting a housing part and a cover part, wherein the housing is formed at least from a metal housing part with at least one housing opening and/or receiving surface and a support edge which borders said housing opening and/or receiving surface and with a cover part which covers the housing opening or receiving surface and comprises a peripheral cover edge. The cover part and the housing part are connected together in an explosion-proof manner. In order to improve such a housing such that a corresponding connection of the housing part and cover part can be produced in a simple and secure manner without the use of adhesive in order to form an explosion-proof housing and such that the housing part and the cover part have a high degree of connection stability, a plurality of connection points between the support edge and the cover edge is formed as interlocking depressions and protrusions, the protrusions being formed by partial melting the cover edge.

The invention relates to an explosion-proof housing and to a method for connecting a housing part and a cover part, wherein the housing is formed at least from a metal housing part with at least one housing opening and/or receiving surface and a support edge which borders said housing opening and/or receiving surface and with a cover part which covers the housing opening or receiving surface and comprises a peripheral cover edge. The cover part and the housing part are connected together in an explosion-proof manner. In order to improve such a housing such that a corresponding connection of the housing part and cover part can be produced in a simple and secure manner without the use of adhesive in order to form an explosion-proof housing and such that the housing part and the cover part have a high degree of connection stability, a plurality of connection points between the support edge and the cover edge is formed as interlocking depressions and protrusions, the protrusions being formed by partial melting the cover edge.

Explosion-proof enclosures having one or more flame paths and one or more grooves for protecting the flame paths and/or assisting in accessing and measuring the flame paths, and methods for coating the explosion-proof enclosures.

Explosion-proof enclosures having one or more flame paths and one or more grooves for protecting the flame paths and/or assisting in accessing and measuring the flame paths, and methods for coating the explosion-proof enclosures.

Provided in the present invention is an explosion-proof lighting device, comprising: a device body for accommodating the explosion-proof lighting device, the device body comprising a mounting portion located in the middle portion thereof and a first heat dissipation portion and a second heat dissipation portion that extend from the bottom of the mounting portion to two sides; a plurality of light emitting diodes (LEDs) for emitting light to illuminate; an electrical drive module for powering the light emitting diodes; and a seal cover detachably connected to the device body from the bottom thereof. The present invention allows for reliable dissipation of heat generated by the light emitting diodes to the ambient environment without additionally providing a heat dissipation device, avoids the direct adverse effects of heat generated by the light emitting diodes on the electrical drive module while achieving compactness and reduced height of the explosion-proof lighting device, and significantly reduces the number of parts and costs for production, assembly and manufacturing of the explosion-proof lighting device.

The LED lighting device for explosive atmospheres has an optical chamber accommodating an optical system, at least one LED mounted on a printed circuit board, a lens covering the printed circuit board, and a control chamber accommodating a supply device of the printed circuit board and control device of the supply device. The optical chamber and the control chamber extend within a closed enclosure to withstand any impacts coming from the environment outside the lighting device or coming from the optical chamber and/or the control chamber. The lens of the optical system is defined by a silicone lens that is an integral part of the enclosure.

The luminaire according to the invention comprises an inner space that is separated into a first section and a second section by a separating wall. While the first section is free and comprises at least one light source, an operating circuit for the light source and/or other components that form potential ignition sources and/or other components that may not be considered as ignition sources are arranged in the second section. The second section is provided with an open pored fill material. The separating wall comprises at least one opening that allows a flow connection between the two sections. The section of the inner space provided with fill material serves as pressure relief volume for the first section, in which the light source is arranged. The fill material can fill the section completely or partly.

The luminaire according to the invention comprises an inner space that is separated into a first section and a second section by a separating wall. While the first section is free and comprises at least one light source, an operating circuit for the light source and/or other components that form potential ignition sources and/or other components that may not be considered as ignition sources are arranged in the second section. The second section is provided with an open pored fill material. The separating wall comprises at least one opening that allows a flow connection between the two sections. The section of the inner space provided with fill material serves as pressure relief volume for the first section, in which the light source is arranged. The fill material can fill the section completely or partly.