Road marker with remotely controllable display
A road marker having a remotely controllable display includes a shell, a light panel, a power source, a receiver and a controller. The shell has at least one lens. The light panel emits light through the lens. The power source provides electricity for operation of the light panel. The receiver receives control signals from a remote control system. The controller controls the light emitted by the light panel in accordance with the control signals from the remote control system.
This application claims priority to U.S. provisional patent application No. 60/656,319, which was filed on Feb. 25, 2005 and is incorporated herein by reference in its entirety.
BACKGROUND OF THE INVENTION1. Field of the Invention
The invention relates to road markers. More particularly, the invention relates to a road marker having a remotely controllable light display.
2. Description of the Related Art
Road markers are frequently used to delineate the lanes of highways. Road markers, such as shown in U.S. Pat. No. 5,403,115, typically have a plastic shell of trapezoidal cross section which is filled with a potting material. A retroreflective lens is formed by molding cube corners on the inside on angled walls of the shell. The lens reflects light from headlights. However, it is also known such as disclosed in U.S. Pat. No. 5,703,719 to provide retroreflective road markers with LEDs which can be used to improve the visibility of the road marker in daylight. The road marker is provided with a battery and solar cell to recharge the battery as well as a sensor to determine the amount of ambient light present. When the light is above or below a certain amount, the LEDs are displayed to improve the visibility.
It would be advantageous, however, to provide a road marker which has a display which could be remotely activated to provide warning to a driver of certain conditions such as weather conditions or lane direction reversals which occur during evacuations or heavy traffic periods.
BRIEF DESCRIPTION OF THE DRAWINGSAdvantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawing, wherein:
According to one aspect of the invention, a road marker includes a shell, a light panel, a power source, a receiver and a controller. The shell has at least one lens. The light panel emits light through the lens. The power source provides electricity for operation of the light panel. The receiver receives control signals from a remote control system. The controller controls the light emitted by the light panel in accordance with the control signals from the remote control system.
According to another aspect of the invention, a remote controlled road marker system includes a road marker and a remote control arrangement. The road marker has a light panel for emitting light. The road marker has a receiver for receiving control signals. The road marker has a controller for actuating the light panel in response to the control signals transmitted to the receiver. The remote control arrangement includes a central controller and a master controller. The central controller has a transmitter for transmitting the control signals. The master control has both a receiver and a transmitter for relaying the control signals from the central controller to the road marker.
DESCRIPTION OF THE INVENTION The invention provides a novel remote controlled road marker system, which includes a remote control arrangement for wirelessly controlling a light-emitting road marker. The road marker according to one embodiment of the invention is generally indicated 10 in
As shown in
A solar panel 40 is mounted in the top of the shell 20 for recharging a battery 42 which provides a power source for the light panel 30. The light is capable of displaying a single color or may display one of selected colors such as red, green, blue, or any combination derived from these colors. As shown in
As shown in
The master control 72 is strategically placed in the trajectory of the road markers 10. The master control 72 includes a plurality of communication port. One communication port is used for information transfer with the central controller 80. A second communication port is used for transmitting information to the road markers 10. A third communication portion is used for transmitting information to the repeaters 90. Additionally, the master control 72 has digital inputs for interconnection of detection systems such as mist or fog detectors, rain detectors, etc. The master control 72 relays signals received from these detectors to the central controller 80, which then determines the amount, color and frequency of light to be emitted from the road markers 10.
The central controller 80 is housed in a central station that serves to monitor and control the operation of the road markers 10. The central controller 80 can handle an unlimited number of road markers 10 or road marker systems. The central controller 80 can be programmed to cause the individual road markers 10 to display a light by event or schedule table, manually, or in response to signals from detectors. The central controller 80 can change the color, level of the light, or the lighting of the road markers 10. The markers 10 can be controlled to display as a uniform group continuously or in blinking form. Likewise, the markers 10 can be controlled to initiate at sequential times such that a synchronous scroll effect or progressive lighting can be provided.
Thus is disclosed an effective intelligent road marker system which can provide necessary safety information to drivers. Colors and sequencing of light can be used to warn the drivers of hazardous conditions including weather conditions such as fog or mist, approach of dangerous conditions such as accidents which require slowing down, or even of the reversal of lane direction such as in evacuations where both lanes of a two-lane highway may be carrying traffic in a single direction.
Claims
1. A road marker comprising:
- a shell having at least one lens;
- a light panel for emitting light through the lens;
- a power source providing electricity for operation of the light panel;
- a receiver that receives control signals from a remote control system; and
- a controller that controls the light emitted by the light panel in accordance with the control signals from the remote control system.
2. A road marker as set forth in claim 1, wherein the power source includes a battery and a solar panel for recharging the battery.
3. A road marker as set forth in claim 1 including a light-emitting diode for emitting light onto an edge of the light panel.
4. A road marker as set forth in claim 1 including fill material for filling the shell and supporting components of the road marker within the shell.
5. A remote controlled road marker system comprising:
- a road marker having a light panel for emitting light, the road marker having a receiver for receiving control signals, the road marker having a controller for actuating the light panel in response to the control signals transmitted to the receiver; and
- a remote control arrangement comprising:
- a central controller having a transmitter for transmitting the control signals; and
- a master control having both a receiver and a transmitter for relaying the control signals from the central controller to the road marker.
6. A remote controlled road marker system as set forth in claim 5 including a repeater for relaying control signals from at least one of the central controller and the master control.
7. A remote controlled road marker system as set forth in claim 5 including detectors for detecting road conditions.
8. A remote controlled road marker system as set forth in claim 7, wherein the master control is operative to relay signals from the detectors indicating the road conditions to the central controller.
9. A remote controlled road marker system as set forth in claim 8, wherein the controller initiates a control signal to be transmitted to the road markers in response to receiving the signals from the detectors indicating the road conditions.
10. A remote controlled road marker system as set forth in claim 8, wherein the controller initiates a control signal to be transmitted to the road markers in accordance with a schedule table.
11. A remote controlled road marker system as set forth in claim 8, wherein the controller initiates a control signal to be transmitted to the road markers in response to manual input from a user.
Type: Application
Filed: Feb 22, 2006
Publication Date: Aug 31, 2006
Inventors: Alejandro Gonzalez (Dallas, TX), Jose Gomez (San Nicholas de los Garza)
Application Number: 11/359,621
International Classification: E01F 11/00 (20060101);