Abstract:
Lamp module cooling system 10 contains vehicle solid-state light source 12 coupled to an extruded first heat sink 2 and an extruded second heat sink 20 in thermal communication with one another and with fluid flow directed from fan air outlet 42 of fan 40 over respective heat dissipation first and second ribs 8, 28 to direct warmed air through existing apertures 115 in headlamp bezel 110 aligned with headlamp optics 130 to defog or de-ice headlamp cover 100. Housing cover 30 and cover 32 define air flow path 50, 52, 54 improving warm air guidance and efficient spatial packaging of lightweight lamp module cooling system 10.
Abstract:
A motor vehicle lamp (100), comprising a lamp housing (110) defining an interior compartment (116) and an exterior region (102); a solid-state light source (120) disposed on a first heat sink (150) in thermal communication therewith, the first heat sink (150) being disposed within the interior compartment (116); a second heat sink (170) having an heat-transferring exterior section (178) disposed in the exterior region (102) of the lamp housing (110) and further having a heat-transferring receiver section (176) disposed at least partially within the interior compartment (116); and the first heat sink (150) being in thermal communication with the second heat sink (170) and coupled in displaceable relationship to the second heat sink (170), whereby a position of said solid-state light source (120) is adjustable relative the lamp housing (110).
Abstract:
An automotive LED lamp having a light guide (28) having a single central bore (29) defined by a cylindrical wall (26) and an outer surface (31) defined by a plurality of outer wall segments (35) bounding, as seen in cross-section transverse the optical axis (18) a regular polygonal shape having more than four sides. The outer polygonal shape has between five sides and sixteen sides, preferably a ten-sided decagon.
Abstract:
A vehicle light (1, 11) produces low-beam output using generally spherical distribution light source (7) with increased efficiency. The vehicle light (1) includes transmissive lens (2) through which light exits vehicle light (1); concave reflector (3); light occluding member (100) defining first sub-reflector (6); cut-off edge (4); and second sub-reflector (5). Concave reflector (3) extends upward above light occluding member (100) and directs low-beam light toward transmissive lens (2). Light occluding member (100) is disposed horizontally proximate a longitudinal axis of the vehicle light and low-beam light is reflected between concave reflector (3) and light occluding member (100) toward transmissive lens (2). A second sub-reflector (5) disposed below generally spherical distribution light source (7) has a concave reflecting surface (18, 18a, 18b), preferably shaped as a wedge of a sphere, to reflect low-beam light, emitted downwardly from generally spherical distribution light source (7), towards concave reflector (3).
Abstract:
A light assembly (100) for directing light into a light guide utilizes a light source (120) comprising a linear array of light emitting diodes (140). The linear array has two opposed long sides (160, 180) equally disposed about a longitudinal axis (162) and two opposed short sides (200, 220) and is positioned in a mounting plane (240). The array has an optical plane (250) lying in a plane perpendicular to the mounting plane (240). A primary optic (260) having a reflecting surface (270) is associated therewith, the reflecting surface (270) having a parabolic cross-section and a focal point (280) and a bisector of parabolic cross-section (282) wherein the focal point (280) is disposed at one of the long sides (160, 180) of the array (140) and the bisector of parabolic cross-section (282) has an axis (283) that is tilted with respect to the optical plane (250). In a preferred embodiment, the axis (283) of the bisector of parabolic cross-section (282) is tilted about 8 degrees. The construction provides an arrangement for feeding light from the array into a light guide.
Abstract:
A replacement vehicular lamp assembly (10) configured for insertion into a vehicle chassis-mounted lamp housing (110) originally containing an incandescent lamp (118) installed in an aperture (102) in a chassis-mounted reflector (116). Lamp assembly (10) has a housing (12) supporting LED(s) and displaceably mounted reflector segments (40) moveable between a closed configuration facilitating installation through the aperture (102) and an outwardly open configuration for function within the lamp housing (110) to form a first reflector (38). A biasing mechanism (25) biases the reflector segments (40) to the open configuration to deploy the first reflector (38) overlying the chassis-mounted reflector (116) so that light from the LED is received on the first reflector (38) defined by the reflector segments (40).
Abstract:
A lamp apparatus (14) includes a heat sink (28), a heat conductive post (26) having a plurality of faces (36), one or more light engines (30) coupled to each of a plurality of faces (36), a connector (32) to provide power to the light engine (30) when electrically coupled to a lamp socket, and a grommet (34). The grommet (34) is secured to and extends around a perimeter of the heat conductive post (26) and includes a radial groove (48) receiving a rim (21) of an opening (20) of a reflector (12) such that a first and a second portion (50, 51) of the grommet (34) extend beyond the rim (21) and over a portion of an interior and an exterior surface (23, 25) of the reflector (12) to secure the lamp apparatus (14) to the opening (20) of the reflector (12).
Abstract:
A light assembly (100) for directing light into a light guide utilizes a light source (120) comprising a linear array of light emitting diodes (140). The linear array has two opposed long sides (160, 180) equally disposed about a longitudinal axis (162) and two opposed short sides (200, 220) and is positioned in a mounting plane (240). The array has an optical plane (250) lying in a plane perpendicular to the mounting plane (240). A primary optic (260) having a reflecting surface (270) is associated therewith, the reflecting surface (270) having a parabolic cross-section and a focal point (280) and a bisector of parabolic cross-section (282) wherein the focal point (280) is disposed at one of the long sides (160, 180) of the array (140) and the bisector of parabolic cross-section (282) has an axis (283) that is tilted with respect to the optical plane (250). In a preferred embodiment, the axis (283) of the bisector of parabolic cross-section (282) is tilted about 8 degrees. The construction provides an arrangement for feeding light from the array into a light guide.
Abstract:
An optical light guide (30) comprises a base (32); a body (34) extending from the base along a longitudinal axis (36); and N light-emitting segments (38) extending laterally from the body (34), at least some of the N segments (38) being spaced a different distance from the base (32). The light guide (30) is constructed of a light-transmitting material, such as glass or acrylic, and can be clear or colored. In a preferred embodiment of the invention each of the segments (38) would extend a different distance from the base; however, the exact degree of separation would be dependent upon the curvature of surface with which the optic is to be utilized.