A lighting device comprises a holder for LED filaments. The holder has a first electrically conductive holding structure and a second electrically conductive holding structure. Each holding structure comprises an essentially longitudinal connection section and an attachment section essentially perpendicular to the connection section.

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 aid 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.

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.

An enhanced lighting ceramic metal-halide lamp assembly provides a ceramic metal-halide lamp that operates to illuminate at high temperatures, have an increased life span, and improved color temperatures, color renderings, and luminous efficacies. The lamp assembly includes an at least partially transparent container forming a vacuum. Inside the container, a plurality of ceramic arc tubes are connected by two U-shaped coupling mechanisms. The coupling mechanisms are conductive and resilient, so as to provide both conductivity, and a buffering clearance between the ceramic arc tubes. The lamp assembly is also unique in that it provides a 630 watt double ended ceramic metal-halide lamp, as the ceramic arc tube produces 630 watts, uses about 200 volts and 3 Amps when illuminating. At least one fastening bracket, having resiliency, extends between the ceramic arc tube and inner surface of the container to help stabilize the ceramic arc tubes inside the elongated container.

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 aid 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.

A double-ended high intensity discharge lamp includes a luminous tube which comprises an inner tube and an outer tube. At least one electrical member is securely fastened inside the luminous tube and at least one illuminator supported inside the luminous tube with a distributor connected with the electrical member to receive power and supply the illuminator. The outer tube is another protective shield to stop spreading in explosion of the illuminator.

A lighting device comprises a holder for LED filaments. The holder has a first electrically conductive holding structure and a second electrically conductive holding structure. Each holding structure comprises an essentially longitudinal connection section and an attachment section essentially perpendicular to the connection section.

A lighting device comprises a holder for LED filaments. The holder has a first electrically conductive holding structure and a second electrically conductive holding structure. Each holding structure comprises an essentially longitudinal connection section and an attachment section essentially perpendicular to the connection section.