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US 2013/0294076 A1Published application
Light fixture
AssigneeTobias Grau
InventorTobias Grau
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AssigneeTobias Grau
InventorTobias Grau
Estimating the term…
A light fixture, such as a laminar light fixture to illuminate a workstation with an effective anti-glare feature comprising a number of LEDs as light sources, and an anti-glare grid with a number of adjacently located, anti-glare channels going through and a number of webs separating the anti-glare channels. Each anti-glare channel has a first end and a second end that is opposite to the first end. The light fixture further comprises a light-guiding panel with a number of adjacently located cup-like light-guiding elements. Each light-guiding element provides a light-guiding channel going through that has a first end and a second end that is located opposite to the first end. Further, at least one LED is located at the first end of the light-guiding channel of each light-guiding element. One light-guiding element is located in each anti-glare channel.
A light fixture, in particular, a laminar light fixture to illuminate a workstation,
A light fixture as recited in one of the preceding claims, wherein at most 10% of the primary radiation impinges on the webs (14) surrounding the anti-glare channels (13).
A light fixture as recited in one of the preceding claims, wherein only an anterior section of the webs (14) of the anti-glare grid (10) is illuminated that is located at the second end (18) of the respective anti-glare channel (13).
A light fixture as recited in one of the preceding claims, wherein the material of the webs (14) of the anti-glare channel (13), is transparent or opaque.
A light fixture as recited in one of the preceding claims, wherein the at least one LED (5) is located next to the longitudinal axis (17) of the respectively pertaining anti-glare channel (13).
A light fixture as recited in one of the preceding claims, wherein the longitudinal axis (29) of each light-guiding channel (22) extends inclined to the longitudinal axis of the respectively pertaining anti-glare channel (13).
A light fixture as recited in one of the preceding claims, wherein the anti-glare channels (13) and correspondingly the light-guiding channels (22) located therein are provided in an even number of n adjacently located rows, whereby the light-guiding channels (22) of the n/2 rows of a first side relative to a center line have a longitudinal axis (29) inclined to the first side toward the longitudinal axis (17) of the respectively associated anti-glare channel (13), and the light-guiding channels (22) of the n/2 rows of the second side relative to the center line have a longitudinal axis (29) inclined to the second side toward longitudinal axis (17) of the respectively associated anti-glare channel (13).
A light fixture as recited in one of the preceding claims, wherein the height (h) of the light-guiding channel (22) is approximately half the height (H) of the respectively pertaining anti-glare channel (13).
A light fixture as recited in one of the preceding claims, wherein the relationship between the wall distance (w1, w2) at the second end (28) of the light-guiding channel (22) and the web distance (W1, W2) at the second end (18) of the pertaining anti-glare channel (13) is between 0.5 and 0.6.
A light fixture according to one of the preceding claims, wherein the light fixtures has at least 180 LEDs (5).
Dependencies are inferred from the claim text.