Car display lamp
US5578986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Jan 17, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/549
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
There is provided a car display device (100) mainly comprising a control unit (20), clips (30R, 30L), and a plug (40) for power source. An on-off signal which has a predetermined period to flash turn signal lamps (L.sub.L, L.sub.R) is input through either of the clips (30R, 30L) and its duration is begun to time. Then, a reference time for judgment is set to be longer than one period and shorter than two periods of the on-off signal. If the duration of the on-off signal is shorter than that of the reference times, the car display device 100 is actuated and the turn signal lamps (L.sub.L and L.sub.R) are being flashed for a predetermined time, simultaneously. Thus, the car display device (100) of the present invention has a simple construction and enables to send appreciation signals to a driver in a succeeding car with certainty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.