A method for manufacturing a light guide plate (LGP) positioning block thereof includes providing a positioning block body of a LGP positioning block and filling and sealing a liquid in a receiving compartment formed in the interior of the positioning block body. The liquid is expandable with a drop of temperature so as to increase a volume thereof and thus enlarge a size of the positioning block body through elasticity of the positioning block body. In this way, the LGP positioning block is adjustable with the variation of the surrounding temperature so as to achieve effective positioning of the light guide plate and providing high reliability of a liquid crystal display device including the light guide plate.

Lighting fixtures are provided. In one example implementation, the lighting fixture can include a housing portion and one or more modular lighting components mechanically coupled to the housing portion. Each modular lighting component can include a lighting assembly (e.g., an LED lighting assembly) and a heat sink portion. The one or more modular lighting components can be selectively removable from the housing portion to configure the lighting fixture for a plurality of different lighting configurations.

Lighting fixtures are provided. In one example implementation, the lighting fixture can include a housing portion and one or more modular lighting components mechanically coupled to the housing portion. Each modular lighting component can include a lighting assembly (e.g., an LED lighting assembly) and a heat sink portion. The one or more modular lighting components can be selectively removable from the housing portion to configure the lighting fixture for a plurality of different lighting configurations.

Provided is a lamp assembly, including: a housing including a bottom portion and side wall portions forming a light source mount portion in a longitudinal direction, a flange portion being connected to each front end of the side wall portions and forming a first insertion portion with an inner side surface thereof being open, and a second insertion portion provided on a bottom surface of the first insertion portion; a lampshade provided therein with a light source, and coupled to the mount portion; a translucent panel slidably coupled to the first insertion portion; a packing fitted in the second insertion portion; and a press bar being inserted in the first insertion portion between an upper surface of the flange portion and the translucent panel and pressing the translucent panel and the packing, thereby fixing the translucent panel and endowing the packing with watertightness.

Provided is a lamp assembly, including: a housing including a bottom portion and side wall portions forming a light source mount portion in a longitudinal direction, a flange portion being connected to each front end of the side wall portions and forming a first insertion portion with an inner side surface thereof being open, and a second insertion portion provided on a bottom surface of the first insertion portion; a lampshade provided therein with a light source, and coupled to the mount portion; a translucent panel slidably coupled to the first insertion portion; a packing fitted in the second insertion portion; and a press bar being inserted in the first insertion portion between an upper surface of the flange portion and the translucent panel and pressing the translucent panel and the packing, thereby fixing the translucent panel and endowing the packing with watertightness.

A power chamber of a lighting fixture includes a chamber body receiving at least one power module. One of the power module and the chamber body includes a first fixing plate defining a sliding groove sunken inwards from a surface of the first fixing plate. The other one of the power module and the chamber body includes a fastener whose end is matched with the sliding groove. The power module and the chamber body are connected together through the fastener which is inserted into the sliding groove, therefore simple to assemble and disassemble. The power chamber can be a profile structure with low manufacturing costs. Power chamber cover(s) can be arranged on the side of the lighting fixture and can be integrally molded with pipes used for fixing the light source module.

A vertically disposed HID lamp fixture for growing plants, which includes a housing having an interior, an exterior, a top hole, and a lower lip defining a light opening towards the plants, further including an inlet duct and outlet duct for the forced air cooling embodiment, a socket tower having an upper flange and a lower flange, the upper flange affixed around the perimeter of the top hole securing the socket tower to the housing, a reflector having an aperture, the lower flange affixed around the perimeter of the aperture suspends the reflector within the housing such that an isolation chamber is formed between the exterior side of the reflector and the interior of the housing, a HID lamp removably engages within said socket tower longitudinally extending substantially downward and through said aperture vertically disposed above said light opening sealed by a compressively held glass sheet.

An LED tube lamp comprises: an LED module for emitting light; a rectifying circuit for rectifying an external driving signal to produce a rectified signal; and a mode determination circuit for determining to perform a first mode or a second mode of lighting according to the rectified signal; wherein the mode determination circuit comprises two voltage dividers for producing a first fraction voltage and a second fraction voltage of the rectified signal, and a control circuit coupled to the two voltage dividers and configured for receiving the first fraction voltage and for receiving the second fraction voltage. When the first fraction voltage signal is in a first voltage range, the mode determination circuit determines to perform the first mode of lighting; and when the second fraction voltage is in a second voltage range, the mode determination circuit determines to perform the second mode of lighting.

A luminaire assembly includes a frame and a back plate. In some examples, the frame includes a lip, and the back plate includes a tab. The back plate is positionable within a housing area of the frame such that the tab is engaged with the lip and the back plate is retained within the frame. In other examples, a luminaire assembly includes a wireless module with an antenna positioned adjacent to a module opening of the back plate. The antenna provides wireless transmissions above the top side of the back plate and below the bottom side of the back plate. A luminaire support clip for a luminaire assembly includes a base and a tab. The tab and the base define a receiving area, and the luminaire support clip receives a portion of an edge of a back plate of the luminaire assembly within the receiving area.

A wireless holder for a light fixture includes a base and a housing removably attached to the base. The housing defines a chamber that is configured to receive a wireless module. The wireless holder may define a gap between the base and the housing when the housing is removably attached to the base. The housing may include a module holder that is movably connected to the housing and is configured to selectively retain the wireless module within the chamber.