A light fixture for a public transportation train system powers an antenna used for train signaling. The antenna can provide to the train a location marker associated with the location of the antenna. The antenna can provide to the train other data communicated to the light fixture through the light fixture communication system.

This new utility invention discloses a waterproof LED lamp comprising a power supply box and an LED lighting module block detachably connected to the power supply box. A power driving board and an LED controller are disposed in the power supply box. The LED lighting module block includes at least one LED module, which includes a module heat dissipater. The power supply box and the LED module are arrayed side-by-side in a parallel manner, and a lateral surface of the power supply box matches a lateral surface of the LED module in size and shape so that the power supply box and the LED module may be in close contact. The power supply box and the LED lighting module block are electrically connected with a conducting wire, which is arranged to go through the wiring hole and the slot. The power driving board provides power to the LED controller and the light board, and the LED controller drives the LED lighting beads on the light board to illuminate. The present invention disposes the power supply and power driver inside a power supply box to separate the power supply from the LED light source. For product maintenance, the power supply or LED light source may be replaced individually.

A lighting system for tunnels or similar works. The lighting system with LED diodes, including at least one lighting strip with LED diodes, with at least one set of LED diode modules, the modules of a set being divided up into subsets of one or more modules supplied with power by respective power supply buses, an electronic system supplying power to the strip, making it possible to power up, according to a first mode of operation, all the power supply buses and, in a second mode of operation, only a part of the power supply buses, so as to reduce the electrical consumption of the strip.

Example embodiments relate to modular luminaire assemblies for tunnels. One example luminaire assembly includes a plurality of interconnectable modules. The plurality of interconnectable modules includes at least an electronic module and at least a first optical module. The first optical module include at least one printed circuit board that includes at least one corresponding LED array and at least one corresponding optical plate. The electronic module includes driver circuitry for driving the at least one LED array of the at least one printed circuit board. The first optical module includes a tray containing the printed circuit board and the optical plate, and an at least partially light transmitting cover closing the tray. The tray has a bottom face and a first edge between the cover and the bottom face. The electronic module includes a tray containing the driver circuitry and a cover closing the tray.

A light fixture usable in train tunnels provides normal mode downlighting for track and walkway lighting and a selective task lighting mode where higher-lumen lighting is provided in at least the same downlighting direction as the track and walkway lighting. The normal lighting illumination level is at least 0.25 to 2.00 foot-candles at the illuminated surfaces. The task lighting mode provides at least 5.00 foot-candles to the same illuminated surfaces. The task lighting mode is achieved with the same light source that provides the normal mode lighting or with additional light sources that are activated together with or instead of the normal lighting mode light sources. The light sources can be a plurality light emitting diode (LED) engines that include a plurality of LEDs. The task lighting mode can also use another light source to provide additional task lighting up from the fixture.

A modular lighting assembly uses LED banks as the light sources. The assembly allows the power supply and LED banks to be independently replaced. The assembly uses a power supply that is separated from the LED banks and electrically connected to the LED banks with a plug connector that may be unplugged and plugged back in to allow the power supply or LED bank to be independently and readily replaced. The assembly provides for easy replacement of the different components of the assembly. One feature that makes the components easier to replace is that the light modules and/or the power supply may be carried by the housing that is removable from the base mount that is secured to a mounting structure such as a wall or ceiling.

The invention relates to a luminaire element (10, 11) for an inspection tunnel (100), in particular for checking shiny surfaces, in particular painted surfaces, comprising at least two, preferably strip-like, arrangements (12) of light sources (13) in a luminaire housing (14) having at least two edge regions (15) lying opposite one another along a longitudinal extension (L) of the luminaire housing (14), wherein the strip-like arrangements (12) of the light sources (13) are formed along the longitudinal extension (L) at the edge regions (16), wherein a light exit surface (20) of the luminaire housing (14) has a higher radiation intensity along the edge regions (16) than in a central region (30). The invention further relates to a luminaire strip (50) having an arrangement of luminaire elements (10, 11) of this kind and to an inspection tunnel having an arrangement of a plurality of luminaire strips (50).

A lighting system having a plurality of lighting devices continuously arranged along the longitudinal direction of a tunnel, such that the distance between the lighting devices corresponds to the flicker frequency for the speed of traffic traveling through the tunnel. Each of the lighting devices includes a longitudinal base, means for securing the base to the tunnel, a translucent cover, at least one printed circuit board (PCB), and a plurality of light emitting diodes (LEDs) arranged on the PCB to form at least one row. The distance between the LEDs is selected such that the angle of emission of the LEDs, provide in the longitudinal direction, a substantially uniform illumination distribution at the desired height of the lighting device. The means of securing the base to the tunnel enables adjustment of an angle of inclination of each lighting device, relative to the transverse direction of the tunnel to create a substantially uniform light output.

This invention relates to an illumination standard calculation method for a tunnel middle section based on safe visual recognition: (a) Setting the light environment of the tunnel middle section; (b) Placing a target object in the tunnel middle section; (c) Making a driver drive a motor vehicle at different speeds toward the target object, and measuring the visual recognition distances D required by the driver to visually discover the target object at different speeds; (d) Resetting the average brightness L of the tunnel middle section and repeating the steps (b) and (c) to obtain a plurality of different sets of visual recognition distances D and corresponding brightness values L; (e) Using the S model to fit the data of the plurality of sets of visual recognition distances D and brightness values L to obtain the formula of the relational model of D and L to be L=0.683/(5.575-In(D)); (f) Substituting a safe stopping sight distance D.sub.0 corresponding to a maximum speed limit of the tunnel into the model formula to obtain the dynamic minimum brightness value L.sub.0 required for the tunnel middle section under this tunnel light environment. The method improves the accuracy of safety evaluation of the tunnel middle section brightness, and the method is simple and convenient, and provides a reference basis for the road traffic safety research. The invention also provides a system for implementing this method.

Example embodiments relate to light emitting devices with adaptable glare classes. One embodiment includes a light emitting device. The light emitting device includes a carrier. The light emitting device also includes a plurality of light sources disposed on the carrier. Additionally, the light emitting device includes a lens plate disposed on the carrier. The lens plate includes a flat portion and a plurality of lenses covering the plurality of light sources. Further, the light emitting device includes a light shielding structure that includes a plurality of reflective barriers, each including a base surface disposed on the flat portion, a top edge at a height above the base surface, and a first reflective sloping surface connecting the base surface and the top edge. The first reflective sloping surface is configured for reflecting light rays emitted through one or more associated first lenses of the plurality of lenses.