A housing box according to an embodiment includes an outer frame, a top panel, and a bracket. The outer frame has a bottom wall and a pair of side walls continuous to the bottom wall and facing each other, and is an aluminum sheet metal having an opening on one side facing the bottom wall. The top panel is made of iron, and covers the one side of the outer frame. The bracket is made of iron, is disposed along the inner surface of the bottom wall and the inner surfaces of the pair of side walls, and is attached to the top panel.

A housing box according to an embodiment includes an outer frame, a top panel, and a bracket. The outer frame has a bottom wall and a pair of side walls continuous to the bottom wall and facing each other, and is an aluminum sheet metal having an opening on one side facing the bottom wall. The top panel is made of iron, and covers the one side of the outer frame. The bracket is made of iron, is disposed along the inner surface of the bottom wall and the inner surfaces of the pair of side walls, and is attached to the top panel.

A method for making an LED lighting fixture includes the steps of: a) cutting a flat blank to form a flat plate including a central piece having a central region and a circumferential region, and a plurality of peripheral extensions; b) forming on the flat plate a patterned circuit which includes a plurality of electrical contact pairs that are formed on the central piece or the peripheral extensions; c) bringing a plurality of LED dies into electrical contact with the electrical contact pairs, respectively; and d) bending the peripheral extensions rearwardly relative to the central piece and toward the central axis to form a shell.

The disclosed embodiments pertain to methods and systems for producing a uniform irradiance upon a horizontal surface using an array of LED emitters and optionally a reflective surface. The uniform irradiance upon a horizontal surface has utility in horticultural lighting applications where it is desirable to distribute energy from the lighting system uniformly to the crop canopy to ensure uniform growth rates and optimal usage of electrical power. Linear LED arrays may be disposed in parallel along a linear support structure with the angle of the arrays and the angle of the LED beams adjusted to comport with an even light distribution over the plant canopy or horizontal surface. The optical light patters achieved resemble and are sometimes called batwings.

A selectively-configurable lighting system is provided that employs at least two light emitting diode arrays configured on a rigid or semi-rigid panel. The adjacent lighting arrays are interconnected by a soft or flexible material that allows for the light emitting diode arrays to be folded upon each other to decrease the perimeter of the lighting system when it is not in use. The lighting emitting diode arrays include a plurality of light emitting diodes that may produce single color, bi-color, or tri-color light. The light emitting diode arrays are selectively controlled with a controller that allows for a user to selectively control or the output of the lights to yield a lighting effect of a predetermined nature or character.

A bulb-type light source includes a globe transmitting a light and at least one light emitting device filament disposed in the globe. The light emitting device filament includes a substrate including n (n is a natural number equal to or greater than 2) flat portions and n-1 bendable portions disposed between the flat portions, a plurality of light emitting device chips disposed on the flat portions, a fluorescent substance layer covering each light emitting device chip and converting a wavelength of a light from each light emitting device chip, and a connection line disposed on the flat portions and electrically connecting the light emitting device chips adjacent to each other between the adjacent light emitting device chips.

A modular LED light for explosive areas includes a housing module including a central power supply module, at least one LED module receiving element, and an LED power supply interface arranged in the LED module receiving element such that the LED power supply interface is in the housing module. At least one LED module is configured to be detachably attached to the housing module. The LED power supply interface supplies electrical power to the at least one LED module when the at least one LED module is attached to the housing module in a usage positon.

A modular LED light for explosive areas includes a housing module including a central power supply module, at least one LED module receiving element, and an LED power supply interface arranged in the LED module receiving element such that the LED power supply interface is in the housing module. At least one LED module is configured to be detachably attached to the housing module. The LED power supply interface supplies electrical power to the at least one LED module when the at least one LED module is attached to the housing module in a usage positon.

A lighting device includes a substrate having a plurality of flat portions and a non-flat portion disposed between the flat portions, a plurality of light emitting sources disposed on the substrate, a fluorescent substrate layer covering one or more light emitting sources and converting a wavelength of a light from the light emitting source, and a connection line disposed on the substrate and electrically connecting the light emitting sources adjacent to each other between the adjacent light emitting sources. The substrate has a first end and a second end are arranged at different distance from a central axis.

A lighting device (10) is disclosed comprising a flexible arrangement including a chain of strips (11) wherein respective end portions of neighboring strips (11) are interconnected by a hinging joint (13) and a plurality of LEDs (15) positioned at regular intervals along the flexible arrangement. The pitch of the LEDs (15) in such a lighting device (10) may be adjusted by adjusting the angle between neighboring strips (11) interconnected by a hinging joint (13). A lighting system (100) comprising such lighting devices (10) and a central controller (110) is also disclosed.