| 54 |
Title |
TI |
[DE] Verfahren zur Verlängerung der Glühlampenlebensdauer bei Signalleuchten
[EN] Traffic signal bulb operation for enhanced life time - has bulb of specific rating operated at reduced voltage level to increase operational life by several orders of magnitude |
| 71/73 |
Applicant/owner |
PA |
Binninger, Dieter, 1000 Berlin, DE
;
Bogen, Wolfgang
|
| 72 |
Inventor |
IN |
Binninger, Dieter, 1000 Berlin, DE
;
Bogen, Wolfgang
|
| 22/96 |
Application date |
AD |
Jan 17, 1980 |
| 21 |
Application number |
AN |
3001755 |
|
Country of application |
AC |
DE |
|
Publication date |
PUB |
Jul 23, 1981 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
G08G 1/095
|
| 51 |
IPC secondary class |
ICS |
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
F21V 23/00
G08G 1/095
|
|
MCD main class |
MCM |
|
|
MCD secondary class |
MCS |
F21V 23/00
(2015.01)
G08G 1/095
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] The operating conditions of filament bulbs specifically for use in traffic light systems are evaluated to achieve an improved operational life. A number of standard filament bulbs of 40,75,100 and 150 Watts is represented by specific current versus colour temps. and are compared with 70 and 40 watt bulbs normally used in traffic light systems. The characteristics indicate considerable improvements in operational life when the voltage is reduced. Typically, a double filament bulb of 150 Watts operated at an average of 155 volts may achieve a life of 100,000 hours compared with only 1000 hrs in the normal range of 220 to 230 volts. |
| 56 |
Cited documents identified in the search |
CT |
DE000002711232A1
DE000002921864A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
DE-Z.: "Der Elektromeister-Deutsches Elektro- handwerk" 1976, H.19, S.1193-1195 p 0;
DE-Z.: "Deutsche Eisenbahntechnik" 1956, H.11, S.437 p 0;
DE-Z.: "Deutsche Eisenbahntechnik" 1961, H.3, S.133 p 0;
DE-Z.: "Straßen-Verkehrs-Technik" 1970, H.3, S.71-74 p 0
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
H05B 39/04
|
