Abstract: A hydroxyl-terminated polyester resin, a preparation method therefor and use thereof. The hydroxyl-terminated polyester resin is composed of the following raw materials in parts by mass: 25-50 parts of a diol, 40-70 parts of a dibasic acid, 0.1-2 parts of glycidyl tertcarbonate, 0.5-4 parts of a hydroxylation reagent, 0.08-0.3 parts of a catalyst and 0.2-0.5 parts of an antioxidant. The acid value of the polyester resin is 1-8 mgKOH/g, the hydroxyl value is 20-30 mgKOH/g, the melt viscosity at 200° C. is 9000-13000 mPa·s, the reactivity at 180° C. is 410-520 s, the glass transition temperature is 53-59° C., and the softening point is 101-106° C.

Abstract: The present disclosure provides a fixing member for an optical element and an LED lamp with the fixing member thereof. The LED lamp includes a base, an LED plate and the optical element. The LED plate includes a plurality of LED beads, the base including a receiving room that includes a mounting surface formed on the bottom thereof, the LED plate arranged on the mounting surface, and the optical element arranged on a light-emitting side of the LED plate; the LED lamp further includes a pressing member with one end being hinged to the base and the other end being buckled with the base, the pressing member presses against the optical element to keep the optical element on the base, which has advantages that the optical element can be assembled, disassembled and maintained without using tools.

Abstract: A light emitting diode luminaire compatible for both top mounting and wall mounting comprises a mounting adapter body suitable to top mounting and wall mounting of the luminaire, a power source for power supply to the luminaire, a radiator, a light source plate, a sucking plate and/or an arm; the mounting adapter body comprises a mounting adapter bracket centered thereof, the mounting adapter bracket can not only be connected to the sucking plate but also connected to the arm. Under the cooperation between the long striped mounting adapter body and the sucking plate and/or arm, the same luminaire can be applicable to a variety of different ways of mounting, with only a few components rather than a complete set of components changed. Thus, not only the procedure and time of production are simplified, but the production cost is greatly reduced.

Abstract: A light emitting diode luminaire compatible for both top mounting and wall mounting comprises a mounting adapter body suitable to top mounting and wall mounting of the luminaire, a power source for power supply to the luminaire, a radiator, a light source plate, a sucking plate and/or an arm; the mounting adapter body comprises a mounting adapter bracket centered thereof, the mounting adapter bracket can not only be connected to the sucking plate but also connected to the arm. Under the cooperation between the long striped mounting adapter body and the sucking plate and/or arm, the same luminaire can be applicable to a variety of different ways of mounting, with only a few components rather than a complete set of components changed. Thus, not only the procedure and time of production are simplified, but the production cost is greatly reduced.

Abstract: A Light Emitting Diode (LED) Projector Lamp Module comprises at least one LED Projector Lamp (1) and further comprises a profiled power source box (12) connected and fixed to one or more flood lamps and it includes a plurality of power source output lines (131) electrically connected to each LED Projector Lamp (11) in a waterproof plug-in mode. The LED Projector Lamp Module is of a modular structure, and the power source box (12) is of profiled structure with freedom of increasing length; therefore, the invention reduces investment of mold and lowers cost. The profiled power source box (12) electrically connects to each LED Projector Lamp (11) in a plug-in mode, to allow for independent removal and convenient maintenance. Radiators (117) are set in the front and the back of the LED Projector Lamp (11), to increase the effective heat dissipation area and improve air flow.