Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO1988004516 - AMPOULE DE LONGUE DUREE ET PIECE RAPPORTEE DE CULOT DESTINEES A ETRE UTILISEES DANS DES INSTALLATIONS DE REGULATION DE LA CIRCULATION

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Claims

1. A long-life incandescent traffic control lamp fo use with a traffic controller having a conflict monitor comprising a sealed glass envelope having an illuminabl filament disposed therein and electrically connected between lamp base and a lamp center contact, said filament bein connected to one of said base or said center contacts through diode, said diode being bridged by a resistive element, whereb said diode rectifies drive current to said filament to improv lamp life while said resistive element provides a low-curren electrical bypass of said diode to avoid indication of an erro condition by the conflict monitor.

2. The traffic control lamp of claim 1 wherein sai resistive element has a resistance substantially in excess of the resistance of said filament.

3. The traffic control lamp of claim 1 wherein said resistive element bridges said diode by being electrically connected between said center contact and said base.

4. The traffic control lamp of claim 1 wherein said resistive element bridges said diode by being electrically connected between the anode and the cathode of said diode.

5. A long-life incandescent lamp comprising:
a sealed glass envelope;
a base fixedly attached to said envelope and sized to be received in a socket;
a center contact fixedly attached to said base and electrically insulated therefrom;
a pair of lead wires extending within said envelope;
an illuminable filament disposed in said envelope and electrically connected between said pair of lead wires;

a diode electrically connected between one of said pair of lead wires and one of said base or center contacts i n seri es with said f ilament , with the other one of said pair of lead wi res being electrically connected to the other one o f said base or center contacts ? and
a resistive element electrically connecting said base with said center contact and bypassing said diode.

6 . The lamp of claim 5 wherein said resistive element electrically connects the anode to the cathode of said diode in parallel therewith.

7 . The lamp of claim 5 wherein said res istive element is electrically connected in para l l e l wi th th e in-series combination of said filament and said diode.

8 . The lamp of claim 5 wherein said resistive element has a resistance of no greater than 27K ohms.

9. A socket insert for use with an incandescent lamp having a center base contact and operating on alternating current to extend the life of the lamp, comprising:
a support body positionable wi thin a lamp socket between the incandescent lamp and the center contact of the socket, said support body having a first contact for electrical contact with the center contact of the lamp and a second contact for electrical contact with the center contact of the socket;
a diode electrically connected between said first and second contacts ; and
a resistive element electrically connected between said first and second contacts in parallel with said diode.
r
10. A long-life incandescent traffic lamp comprising:
a sealed glass envelope;
a f i rst electrical contact external of said glass envelope;

a second electrical contact external of said glas envelope and electrically insulated from said first contact;
an illuminable filament disposed within said glas envelope and electrically connected between said first an second contacts;
rectifier means for rectifying current to sai filament; and
resistive means for providing a resistive bridg between said first and second contacts, said resistive mean having a resistance substantially in excess of the resistanc of said filament.

11. The traffic lamp of claim 10 wherein sai rectifier means is a diode electrically connected in serie with said filament between said filament and one of said firs or second contacts.

12. The traffic lamp of claim 11 wherein sai resistive means is a resistor electrically connected betwee the anode and the cathode of said diode.

13. The traffic lamp of claim 11 wherein said resistive means is a resistor electrically connected between said first and second contacts in parallel with the in-series combination of said filament and said diode.