Light bar providing illumination from inside a vehicle
A light bar contains one or more rows of light-emitting diodes (LED's) in a housing which extends across substantially the entire width of a windshield of a vehicle and is narrow in width to minimize interference with visibility through the windshield. The housing has an interior forming a channel with a throat; the throat acting as a hood which directs the illumination out of the windshield and minimizes stray light. The LED's are arranged in banks generally symmetrically arrayed about the center of the length of the housing. Two of the banks, preferably equidistant from the center, are tilted in opposite directions to each other so as to project light toward the right side and left side of the vehicle. The LED's may be illuminated continuously or in selected sequence, as established by the user with a switch on the housing. Attached to the housing in a separate compartment is another bank of LED's which may direct light inside the vehicle for use as a dome or map light. A mechanism is provided for displacing and tilting the housing and may use pivotal arms attached to the end of the housing or adjustable Z-shaped hangers attached preferably to clamps such as visor clips already on the vehicle.
The present invention relates to light bars providing illumination from the inside of the vehicle through a window, such as the windshield of the vehicle, whereby the illumination provides signaling or warning functions. More particularly, the light bar provided by the invention contains light emitting diodes (LED's) arrayed and contained so as to minimize interference with visibility through a window via which light from the LED's projects, such light being projectable over a wide angle, as from the right to left sides of a vehicle.
Light sources mounted inside a vehicle have heretofore been proposed. See for example, Nock, U.S. Pat. No. 1,674,340, issued Jun. 19, 1928; Gillespie, U.S. Pat. No. 2,017,798, issued Oct. 15, 1935; Annas, U.S. Pat. No. 3,665,392, issued May 23, 1972; Serizawa, U.S. Pat. No. 4,733,335, issued May 28, 1988; Lipman, U.S. Pat. No. 4,981,363, issued Jan. 1, 1991; Kondo, U.S. Pat. No. 5,099,401, issued Mar. 24, 1992; Pederson, U.S. Pat. No. 6,461,008, issued Oct. 8, 2002 (
LED's have been used in brake or collision lights which are adapted to be located in the vicinity of the rear window of a vehicle. See Serizawa, U.S. Pat. No. 4,733,335 (noted above); Machida, U.S. Pat. No. 5,050,051, issued Sep. 17, 1991; Bartilluci, U.S. Pat. No. 5,663,707, issued Sep. 2, 1997; Matsumura, U.S. Pat. No. Des. 314,244, issued Jan. 29, 1991; U.S. Pat. No. Des. 315,218, issued Mar. 5, 1991; and Lee, U.S. Pat. No. D447,825, issued Sep. 11, 2001. In U.S. patent application Ser. No. ______, filed in the name of Steven Neufeglise, having priority to U.S. Provisional Application No. 60/375,385, filed Apr. 25, 2002, and assigned to the same assignee as this application, various inside light bars are disclosed which are adapted to be adjustably positioned against the windshield so as to minimize stray illumination.
Notwithstanding the efforts manifested by the above-referenced documents, a practical interior light bar has not been made commercially available. A practical interior light bar capable of producing illumination approaching that provided by external light bars, usually mounted on the top of the roof of the vehicle, is provided by this invention.
Further features of the present invention are to provide an improved interior light bar containing LED's which can extend substantially across the entire width of a window of a vehicle, especially the windshield thereof, and which:
a) can provide wide-angle illumination from the right to left sides of the vehicle as well as straight ahead;
b) is sufficiently small to avoid interference with visibility through the window or windshield;
c) contains the LED's in a manner to avoid stray light, as in a housing which acts as a hood; and is adjustable vertically and angularly so as to be held in proximity to the windshield or window at a desired position, which may be near the top of the windshield; and
d) is user controllable to provide different sequences of illumination, such as constant and flashing, which flashing may be of different colors, such as red, blue and amber and in selected sequence suitable for warning applications.
Briefly described, a light bar in accordance with the invention provides illumination from inside a vehicle through a window thereof, especially the windshield. The light bar has a width extending laterally across substantially the entire window and a narrow height. The light bar contains a plurality of LED's in one or more rows arrayed substantially across the entire width of the window in a housing defining a channel having a throat, which directs illumination from the rows of LED's in a beam restricted or hooded by the throat. The beam extends through the window. The LED's may be in banks on opposite sides of the center of the window. At least a pair of these banks, which are preferably symmetrical with respect to the center of the housing, are tilted in opposite directions so as to direct illumination therefrom in a wide angle which extends between the right and left sides of the vehicle. Arms or hangers adjustably mount the housing so as to provide vertical displacement and tilting about a horizontal axis so as to locate the throat in proximity to the window and aim the illumination projected through the window. Circuitry connected to the LED's energizes the banks to selectively provide continuous light or flashing illumination from the banks in sequences as selected by the user.
The foregoing and other objects, features, and advantages of the invention will become more apparent from a reading of the following description in connection with the accompanying drawings in which:
Referring more particularly to
A light bar 18 provided by the invention is a narrow structure, sufficiently narrow to fit between the visors 14, when in their horizontal or up position, and the roof of the passenger compartment. The light bar 18 has one or more rows of LED's 24, two rows being illustrated in
As shown in
Referring to
The housing 26 is constructed of plates or sheets of flexible material by virtue of their thickness and also by virtue of the use of plastic, such as polycarbonate or PVC materials for the plates. Such material provides some flexibility and resilience against the inside of the windshield. However, it may be desirable to use a rubber gasket 60 attached to the outside surface of the bottom 38, if desired (see
The top 48 and bottom 38 of the housing 26 define a channel 37 having a throat 41. The LED's 24 are arranged in banks 62, 64, 66, 68, 70, and 72 and project from circuit boards 74 which are attached to the mounting blocks 52. More or fewer LED banks may be provided and additional bank shown at 76 in
The mounts 28 (
The banks are preferably symmetrically disposed about the center of the housing 26. It is a significant feature of the invention to provide wide-angle illumination towards the left and right sides of the vehicle 10 as well as straight ahead. The banks 62, 66, 68 and 72 face ahead through the throat 41. The banks 64 and 70 are tilted in opposite directions so as to project illumination towards the right and left sides of the vehicle. The end banks 62 and 72 may be displaced rearward of the forward arrays 66 and 68. The tilted banks 64 and 70 are at such angles as to connect the ends of the banks 62 and 66, and 68 and 70, respectively. All LED's have an optical axis which point outwardly through the throat 39 and may be mounted perpendicularly to the plane of the base 38 and cover 48.
A plug 80, which may be received in an accessory or cigarette lighter socket, provides power to the LED's 24 through a helical electrical cord 82. Internally of the housing and preferably mounted on the bottom 38 is a box containing a flasher circuit 84 which is also shown in the schematic diagram (
Another important feature of the invention is that the banks of LED's are in the channel behind the front edges 86 and 88 of the top 48 and bottom 38 (
Referring to
The light projecting ends of the LED's in each bank are assembled with its own lens array 63, 65, 67, 71, 73, 75, and 77. The lens arrays are transparent plates 101 which carry lenses in barrels 103 which fit over the ends of the LED's in their respective banks.
Another improvement is the mountings 128, which like the mountings 28 provide for vertical and angular adjustment. These mountings are hangers having slotted (forked) ends 130 and overlapping segments 132 and 134 which are clamped together by screws extending through a slot 136 in at least one of the sections 132. This slot allows for vertical adjustment up and down of the light bar 100 and the forked ends 130 allow for adjustment toward and away from the windshield of the light bar. The ends 130 and the overlapping segments 132 and 134 define a Z-shaped structure with the center leg of the Z (provided by the segments 132 and 134) inclined at an angle so as to provide fine adjustment toward and away from the windshield (vertically) as the segments are moved toward each other along the slot 136. The upper fork 130 is adapted to fit between the clip 13, which holds the visor, and the roof of the vehicle where the clip 13 is attached thereto. The clip 13 then serves a dual function of mounting the visor as well as the light bar.
Referring to
From the foregoing description, it will be apparent that there has been provided an improved interior light bar. Variations and modifications in the herein disclosed light bar and various aspects thereof, within the scope of the invention, will undoubtedly become apparent to those skilled in the art. Accordingly, the foregoing description should be taken as illustrative and not in a limiting sense.
Claims
1. A light bar providing illumination from inside a vehicle, through a window of the vehicle, said window being of a width extending laterally across the window, said window being of a height extending from bottom to top of the window, said light bar comprising a plurality of light emitting diodes (LED's) in at least one row of length corresponding substantially to the width of said window, a housing defining a channel containing said row of LED's, said channel having a throat which directs illumination from said row of LED's in a beam restricted by said throat through said window.
2. The light bar according to claim 1 wherein said window is a windshield of said vehicle and said housing being disposed immediately adjacent the top of said windshield.
3. The light bar according to claim 2 wherein said windshield is guarded by visors extending laterally in a direction across the width of said windshield and being movable between a position generally perpendicular to generally paralleling said windshield, said light bar housing being sufficiently narrow to fit between said visors and top of said window.
4-12. (canceled)
13. The light bar according to claim 1 wherein said housing has upper and lower walls closed at opposite ends, said walls defining said channel and said throat thereof and a back between said walls and ends.
14. The light bar according to claim 13 wherein a light source is attached to a lower one of said walls for projecting light for selective illumination inside said vehicle.
15-19. (canceled)
20. The light bar according to claim 13 wherein said walls have edges defining where said throat opens, said LED's being disposed inwardly of said edges.
21. The light bar according to claim 1 wherein said LED's are in rows selected from the group consisting of a single row, two parallel rows and three parallel rows.
22. The light bar according to claim 1 wherein said LED's are provided in banks constituting said row or a plurality of rows of LED's.
23-31. (canceled)
32. A light bar providing illumination from inside a vehicle through a window thereof having a width and height, comprising a housing defining a channel extending laterally, said channel having an elongated throat, a plurality of banks of LED's each having one or more rows of height less than said channel disposed in said housing facing said throat, at least one of said banks being oriented to project illumination in a different direction through said window than others of said banks.
33. (canceled)
34. The light bar according to claim 32 wherein the color of illumination from certain of said banks is different from the color of illumination from other of said banks.
35. The light bar according to claim 32 wherein first and second pluralities of said banks are disposed about a region centrally of said housing.
36. The light bar according to claim 35 wherein the disposition of said banks is generally symmetrically about said centrally disposed region.
37. The light bar according to claim 36 wherein two of said symmetrically disposed banks are tilted angularly with respect to each other away from said window to project illumination in directions angularly corresponding to the tilt thereof.
38. The light bar according to claim 37 wherein said banks disposed between said tilted banks are oriented generally in the same direction to project illumination in the same general direction out through said window.
39. The light bar according to claim 32 further comprising means for energizing said banks to selectively provide continuous and different sequences of flashing illumination.
40. The light bar according to claim 32 further comprising optics attached to said banks for each LED thereof for focusing illumination provided from said banks.
41. The light bar according to claim 40 wherein said optics represent separate plates of transparent material carrying lenses disposed on the LED's of each bank.
42. A light bar mountable in the interior of a vehicle comprising:
- a housing extending substantially across a window of said vehicle having a plurality of LED's for projecting light through said window in which said LED's are oriented to project said light in different directions;
- said housing being sufficiently narrow to be located adjacent the top of said window without substantial obstruction of view through said window; and
- means for energizing said LED's to provide one or more patterns of the light from said LED's.
43. A method for providing an interior light bar for a vehicle, having a windshield comprising the steps of:
- providing a light bar much narrower than said windshield in height, said bar having LED's for projecting light in different directions; and
- attaching said light bar between the roof and visors of the vehicle to direct light from said light bar out of the windshield of the vehicle.
44. (canceled)
45. A light bar providing illumination from inside a vehicle, through a window of the vehicle, said light bar comprising a plurality of light emitting diodes (LED's) in at least one row, a housing containing said row of LED's, illumination from said row of LED's being projectable through said window, and wherein said housing has at least one wall and opposite ends, and a back along said wall and between said ends, and wherein said wall and ends are plates of flexible material.
46. A light bar providing illumination from inside a vehicle, through a window of the vehicle, said light bar comprising a plurality of light emitting diodes (LED's) in at least one row, a housing containing said row of LED's, illumination from said row of LED's being projectable through said window, and at least one member for adjustably mounting said housing with respect to said window.
Type: Application
Filed: Apr 7, 2006
Publication Date: Aug 24, 2006
Inventors: William Dalton (Tulsa, OK), Steven Neufeglise (Rochester, NY)
Application Number: 11/399,932
International Classification: B60Q 1/26 (20060101);