GB652807A - Improvements in or relating to apparatus for providing fluorescent lighting in vehicles - Google Patents
Improvements in or relating to apparatus for providing fluorescent lighting in vehiclesInfo
- Publication number
- GB652807A GB652807A GB2027148A GB2027148A GB652807A GB 652807 A GB652807 A GB 652807A GB 2027148 A GB2027148 A GB 2027148A GB 2027148 A GB2027148 A GB 2027148A GB 652807 A GB652807 A GB 652807A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- relay
- contact
- tube
- contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
652,807. Supply systems for space discharge lamps. DAVIS, B. A., and WRIGHT, W. J. July 29, 1948, No. 20271. [Class 38 (iv)] A system for supplying a plurality of discharge tubes from a low-voltage source particularly for the internal illumination of vehicles includes means for supplying current from the source to the tube heaters, means for creating a voltage surge to strike the tubes and means for opening the heating circuit to each tube in sequence, thereby starting each lamp in sequence. In the arrangement shown, the low voltage supply which may comprise the vehicle battery feeds a rotary transformer RT, the output current of which, to preheat the tubes electrodes, is taken via a polarity change-over switch RS (combined with the input " On/Off " switch), a choke Ch to provide the usual voltage surge, through the filamentary electrodes of the lamps T1, T2, T3, series-connected by contacts 10, 11, 12 of relays R1, R2, R3, and ballast resistances 13, 14. The coils of relays R2 and R3 and the heaters of thermal switches Thl, Th2 and Th3 are energized from the source over contacts of the relays. Switch Th2 closes to short-circuit part of the resistive ballast, and with a timedelay switch Th1 closes to energize relay R1, whereupon contact 10 opens to interrupt the heating current and cause the choke to strike tube T1; contact 10c maintains the relay energized and contact 10a opens to de-energize relay R2 whereupon contact 11 opens to again interrupt the heating current, now passing through the discharge space of tube T1, and start tube T2 ; contacts 11a, 11b interrupt the heating current to switch Th1 and contact 11c de-energizes relay R3, whereupon contact 12 opens to start tube T3; contact 12c interrupts heating current to switch Th2 and thereby remove the short-circuit from portion 13 of the ballast resistance and contacts 12a, 12b interrupt heating current to switch Th3 provided for overload protection whereby the switch Th3 operates to blow fuse X and interrupt the coil circuit of relay R. The ballast resistance may be included in the low-voltage circuit (Fig. 2, not shown), and the relay contacts may be manually operated. In another arrangement (Fig. 3, not shown), the relay coils provide the voltage surges which are introduced into the heating circuit, through resistances by a thermal switch. Two relays are shown controlling three tubes, the second relay being provided with delayed opening contacts for the third tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2027148A GB652807A (en) | 1948-07-29 | 1948-07-29 | Improvements in or relating to apparatus for providing fluorescent lighting in vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2027148A GB652807A (en) | 1948-07-29 | 1948-07-29 | Improvements in or relating to apparatus for providing fluorescent lighting in vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB652807A true GB652807A (en) | 1951-05-02 |
Family
ID=10143213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2027148A Expired GB652807A (en) | 1948-07-29 | 1948-07-29 | Improvements in or relating to apparatus for providing fluorescent lighting in vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB652807A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
-
1948
- 1948-07-29 GB GB2027148A patent/GB652807A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
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