Abstract:
A full function light bar is provided mountable inside a vehicle against the windshield. The light bar is an assembly of several light sources, including strobe lamps, flashing lamps, oscillating lamps, and an aimable take down lamp. The light bar is not limited in application to one specific vehicular model and is adaptable and adjustable to conform to the windshield, rear window, or other interior cab surfaces of varying shape (curvature). The light sources are supported on a flexible support mount which has adjustable, flexible gaskets. End caps and the gaskets screen the inside of the vehicle from the light emitted by the light bar. The support mount is hung on adjustable brackets which allow the light bar to be raised, lowered and tilted to further facilitate conformance with the windshield.

Description:
This application claims priority to Provisional Patent Application No. 60/375,385, filed Apr. 25, 2002, which is incorporated herein by reference. 

   DESCRIPTION 
   The present invention relates to warning light assemblies known as light bars, which contain one or more light sources, and particularly to a light bar which is designed for mounting and use inside a vehicle, rather than on the roof of a vehicle as heretofore has been the case for full function light bars. 
   By a full function light bar is meant, a light bar which employs different types of light sources, such as pulsed light sources, usually strobe lamps, high intensity lamps and rotating or oscillating lamps. It is a feature of the present invention to provide an improved take down lamp light source which is adapted to project a beam in various directions by tilting and moving the light source so it is directed at a perpetrator and facilitating the police to take down that person. The take down lamp may be on the light bar. While a light bar may be straight, the term light bar includes curved or multi-part assemblies which provide warning and police related illumination. The term inside may be taken broadly as disposition on the inside of the windshield or other window or interior surface of the cab or passenger compartment, whether the light bar is mounted by suspension from an interior fixture or attached to the framing for the windshield as in a “Jeep” type vehicle. 
   Typical light bars are mounted outside the vehicle, usually on the roof thereof. A more complex light bar of the exterior mounted type is shown in Lyons, U.S. Pat. No. 5,826,965, issued Oct. 27, 1998. Such exterior light bars make the special purpose of the vehicle apparent. Sometimes it is desirable to use unmarked cars for police purposes. This capability is not afforded when an exterior light bar is used. There are also problems of noise generation when the vehicle is in motion, corrosion, and the cost of installation on the vehicle, in case of exterior light bars. Also, exterior light bars having light sources which can be aimed, require remote control mechanisms which are difficult and expensive to implement. See Lipman, U.S. Pat. No. 4,981,363, issued Jan. 1, 1991. Take down lights are needed to light up the area in front of a police car. Often times these take down lights are used as a safety feature for the officers. These lights allow illumination of a vehicle or suspect in front of the police car, while at the same time reducing the view that the suspect has of the officer. 
   It is a feature of the invention to provide take down lights adjustable from within the vehicle, since the take down light may be a light source of a light bar providing the take down illumination function. The interior take down lights of a light bar provided in accordance with the invention allows the officer to direct the beam towards the intended target rapidly and without leaving the vehicle, thus increasing the effectiveness of the take down light. Since the light is within the vehicle, the take down function may be accomplished with vehicles of varying size and accommodates varying roadway surroundings (e.g., hills, curves, or road shoulders), so as to enhance the effectiveness of take down lights. 
   Another feature of the invention is to provide an interior light bar that may be located in proximity to the inside surface of the windshield of the vehicle. The light bar assembly provided by the invention is adapted to be installed inside the vehicle in a manner that light is directed principally, perpendicular to the windshield. This provides the optical advantage of reducing reflections. The intensity of the light which is projected through the windshield, then, is not diminished due to wasted reflected light. 
   A principal problem solved by the invention is to provide an interior or inside light bar which is constructed and supported to conform to windshields and other interior surfaces having various shapes and curvatures. Accordingly, the interior light bar provided by the invention is not limited to a windshield of particular curvature and is useful on many styles and models of vehicles. 
   Interior light sources have been suggested which are adapted to be mounted on the dashboard or clipped to the outside of the visor. Such light sources are alluded to in Gavagan, U.S. Pat. No. 4,788,630, issued Nov. 29, 1988; Lyons, U.S. Pat. No. 5,660,457, issued Aug. 26, 1997; and Pokorney, U.S. Pat. No. 5,988,839, issued Nov. 23, 1999. These windshield and dash mounted warning lights are not in assemblies which provide full function light bars, such full function light bars being suitable only for external mounting. It has been proposed to mount light sources inside a vehicle to project light through the windshield; however, these are not adapted to provide for effective and secure attachment and conformance to windshield surfaces of various curvature when in close proximity thereto. See 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 Mar. 22, 1988; Machida, U.S. Pat. No. 5,050,051, Issued Sep. 17, 1991; Strickland, U.S. Pat. No. 6,511,216, Issued Jan. 28, 2003; and Pederson, U.S. Pat. No. 6,461,088, Issued Oct. 8, 2002, ( FIGS. 13 and 14 ). In addition, there are no facilities with such dash and visor mounted devices for mounting adjacent to the windshield and reducing reflections from the windshield. Unlike light bars provided by the invention, such dash and visor mounted vehicles undesirably illuminate the inside of the vehicle and can produce background illumination, which can interfere with driving and with police functions. 
   Accordingly, it is a principal of the present invention to provide an improved light bar which is capable of mounting within a vehicle, especially on the inside thereof, in proximity to the windshield and accommodates a wide range of windshield shapes and curvatures. 
   It is another objection of the present invention to provide an improved full function interior mounted or internal light bar. 
   It is a still further object of the invention to provide an improved take down light source, which is particularly adapted for mounting on, and as part of, an inside or internal light bar for a vehicle. 
   Briefly described, a light bar in accordance with the invention is installable internally of a vehicle. The light bar has at least one light source and preferably has a plurality of light sources providing full light bar functions, such as flashing and pulsing lights, rotating lights, and can also have take down functionality. The light bar is installed with the light source thereof facing and preferably in proximity to the windshield. The light bar has a mounting including a flexible housing, preferably with gaskets or boots adjustable with respect to the mounting. The adjustable and flexible housing and its boots enable the light bar to be installed engaging the inside of the windshield and in conformance therewith. The housing is suspended on a member which is positionable to displace and tilt the housing thereby facilitating mounting in conformance with the windshield. Because of its flexibility and adjustability, the light bar can adapt and conform to the curvature shape of windshields of various and different curvature so as not to be limited in use to a particular type or model of vehicle. 

   
     The foregoing and other objects, features and advantages of the invention will become apparent from a reading of the following description in connection with the accompanying drawings in which: 
       FIG. 1  is a side elevation of a vehicle having a light bar in accordance with the invention, installed therein; 
       FIG. 1A  is an enlarged view of the light bar assembled in the vehicle and is taken within the line designated  1 A in  FIG. 1  and along the line  1 A— 1 A in  FIG. 2  in the direction of the arrows; 
       FIG. 2  is a front view of the vehicle of  FIGS. 1 and 1A ; 
       FIG. 3  is a perspective view of the light bar shown in  FIGS. 1 and 2 ; 
       FIG. 4  is a more artistic perspective view of the light bar shown in  FIG. 3 ; 
       FIG. 4A  is a perspective view, taken from the rear, of the light bar shown in  FIGS. 3 and 4 ; 
       FIG. 5  is a top view of the light bar of  FIG. 3 ; 
       FIG. 6  is a front view of the light bar; 
       FIG. 7  is a sectional view taken along the line  7 — 7  in  FIG. 6 ; 
       FIG. 8  is a perspective view of the adjustable mounting structure including an L-shaped support member, which may be an extrusion of plastic material and somewhat flexible, particularly at the junction of the face and wall of the extrusion, and the view showing the adjustable rubber boots or gaskets, which conform the light bar to the ceiling or headliner and to the windshield, and enables mounting of the light bar in the proximity of the inside of the windshield; 
       FIG. 9  is a rear view of the light bar, as viewed from the driver&#39;s position; 
       FIG. 9A  is a perspective view of the light bar taken from the rear; 
       FIG. 9B  is a perspective view of the light bar mounted inside the windshield and taken from the rear thereof, i.e., from the inside of the cab, the view being broken away to show the mounting brackets which suspend the light bar; 
       FIG. 9C  shows the mounting in greater detail; 
       FIG. 10  is perspective view of the take down light assembly which may be installed in the light bar shown in the previous figures; 
       FIG. 11  is a perspective view of the take down light taken from the front; 
       FIG. 12  is a top view of the take down light of  FIGS. 10 and 11 ; 
       FIG. 13  is a front view of the take down light shown in  FIG. 12 ; 
       FIG. 14  is a side view of the take down light shown in  FIGS. 12 and 13 ; and 
       FIGS. 15A ,  15 B and  15 C show the take down light with its spotlight lamps adjusted to tilt the beam emitted from the lamps in different directions. 
   

   Referring to the drawings, particularly to  FIGS. 1 ,  1 A and  2 , there is shown a vehicle  10 , such as a police car, having a cab or interior  12  with a windshield  14  and a ceiling or headliner  15 . Attached to the ceiling  15  and mounted adjacent and in proximity to the windshield  14  is a flexible light bar  16  provided by the invention. The light bar  16  has a plurality of light sources  18  to  32  which are shown in and will be described in connection with  FIGS. 3–6 . The light bar has a flexible housing  33  from which boots or gaskets  34  and  36  extend into engagement with the windshield  14  and ceiling  15 , and space the light sources  18 – 32  in proximity to the windshield  14  irrespective of the curvature of the windshield  14 , thereby adapting the light bar  16  to be installed in vehicles  10  having windshield  14  and headliners  15  or windshield frames of various and different curvatures. The ends of the light bar  16  have end caps or screens  38  and  40 . The housing  33  (called herein the extrusion as it may represent a plastic extrusion), its gaskets  34  and  36  and the end caps  38  and  40  maintain the light bar  16  undercover and limit the light which is emitted into the vehicle  10 . Notwithstanding that the light bar  16  is inside the vehicle  10  and provides intense illumination, it does not release illumination significantly interfering with (blinding) the driver&#39;s view and adversely affecting the driver&#39;s operation of the vehicle  10 . 
   The light bar  16  may be mounted to any hard points of the ceiling  15 , such as visor arm mounts  37  have been connected (see  FIGS. 1A ,  9 B and  9 C). Brackets  42  and  44  which have two pivotally connected parts, one is connected to the light bar  16  and the other to the ceiling  15  at the visor arm mounting  37 , may be used to hang the light bar  16  to the ceiling  15 . 
   Referring to  FIGS. 3–9 , the interior or “undercover” light bar  16  has light sources  18 – 32  providing a compliment of sources available in full function light bars  16  which are adapted solely for exterior mounting. Thus, the interior or “undercover” has the equivalent or greater functionality than of the conventional exterior variety of light bar  16 . The various light sources  18 – 32  are conventional in the case of the illustrated embodiment consist of an oscillating light  18  and its associated oscillation mechanism and lamp, two directional strobe lights, which are preferably halogen lamps  20  and  22 , an adjustable take down light  24 , and three arrays of LEDs  26 ,  28  and  30  which may be driven to provide flashing lights of different color. Other complements and types of light sources may be employed. Finally, a linear strobe lamp array  32  completes the compliment of warning functions. All of these lamps are mounted on a mounting strip  50 , attached to the extrusion  33  which provides the housing of light bar  16 , thus, the mounting structure is provided by the L-shaped plastic extrusion  33 . This extrusion  33  has a back or rear wall  52  and a bottom wall or base  53 . It may have several grooves  54  which enhance the appearance of the light bar  16  cosmetically as well as enhance the flexibility of the extrusion  33 . 
   The light bar  16  extends laterally across the windshield  14 , and the extrusion  33  and end caps  38  and  40  provide an optically screened enclosure which prevents the escape of the light from the powerful, intense sources  18 – 32  of the light bar  16 . A cooling fan  54  may be installed within the enclosure. 
   As best in shown in  FIG. 8  the gaskets or boots which conform the enclosure to the windshield  14  and ceiling  15  (headliner) of the vehicle  10  are adjustably mounted by having sleeves  58  and  60  which fit over the outside edges of the base  53  and rear wall  52  of the extrusion  33 . 
   The brackets  42  and  44  each have two parts (see  FIGS. 1A and 7 ) which are pivotally connected to each other. The upper part  45  has a flange  47  which connects to the ceiling  15  or headliner, while the lower part  47  is attached to the strip  50 . The tension in the connection (bolts and nuts)  41  of the parts  45  and  47  may be increased to prevent swinging after installation. 
   The side of the light bar  16  facing the driver presents the grooved, backside of the extrusion  33  (see  FIGS. 4A ,  9  and  9 A). Also mounted in the extrusion  33  and extending therethrough is a plurality of electrical switches  66 . Power is brought to the light bar  16  via a cable not shown. This cable may, for example, plug into the 12-volt cigarette lighter or accessory receptacle below the dashboard. The switches direct the power to the various light sources  18 – 32  and they select different ones of these sources as required by the operator. Also visible from the backside of the light bar  16  is a knob  68  which controls the positioning of the spotlights  70  of the take down light  24 . This knob  68  provides the take down light  24  adjusting handle. 
   The take down light  24  has a U-shaped base  72  which mounts on the strip  50 . This base  72  is connected at pivot  74  to a U-shaped leg  76 . This leg  76 , another leg  78 , and arms  80  and  82  provide a pantograph mechanism, in as much as the legs  76  and  78  and arms  80  and  82  are connected to each other by four bearings providing pivots  88 . The knob  68  is connected to the rear leg  78 . The spotlights are inserted in sockets  90  extending from reflectors  92  on flanges  94  which extend upwardly from the arms  80  and  82 . The base may have fingers  96  which provide an extension of the platform afforded by the U-shaped bracket  72 .  FIG. 12  has three sets of arrows  100 ,  102  and  104  showing how the handle may be moved laterally so as to accomplish swinging about a vertical axis along arches indicated by the arrows  102  and  104 . Moving the knob  68  upwardly and downwardly provides tilting of the spotlights and therefore movement of the beam about the horizontal pivotal axis defined by the pivot  74 . This upward and downward tilt is about an arc indicated by the arrow  106  in  FIG. 15C . 
   From the foregoing description it will be apparent that there has been provided an improved light bar which is of a design to enable mounting of the bar internally of a vehicle and particularly against its windshield and in proximity thereto. The optical performance of the light bar is enhanced and mounting it internally does not interfere with the operation of the vehicle because escape of light into the interior of the vehicle is limited. Variations and modifications in the herein described light bar, within in the scope of the invention, will undoubtedly suggest themselves to those skilled in the art. Accordingly, the foregoing description should be taken as illustrative and not in a limiting sense.