WO1988004516A1 - Ampoule de longue duree et piece rapportee de culot destinees a etre utilisees dans des installations de regulation de la circulation - Google Patents

Ampoule de longue duree et piece rapportee de culot destinees a etre utilisees dans des installations de regulation de la circulation Download PDF

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Publication number
WO1988004516A1
WO1988004516A1 PCT/US1986/002678 US8602678W WO8804516A1 WO 1988004516 A1 WO1988004516 A1 WO 1988004516A1 US 8602678 W US8602678 W US 8602678W WO 8804516 A1 WO8804516 A1 WO 8804516A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
diode
filament
electrically connected
base
Prior art date
Application number
PCT/US1986/002678
Other languages
English (en)
Inventor
Emiliano Ponce, Jr.
Original Assignee
Ponce Emiliano Jr
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US06/616,492 priority Critical patent/US4629943A/en
Priority claimed from US06/616,492 external-priority patent/US4629943A/en
Application filed by Ponce Emiliano Jr filed Critical Ponce Emiliano Jr
Publication of WO1988004516A1 publication Critical patent/WO1988004516A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/62—One or more circuit elements structurally associated with the lamp

Definitions

  • the present invention relates generally to traf ⁇ fic control lamps, and more particularly, to a long-life incandescent traffic control lamp and a socket insert for use with a conventional traffic control lamp that will func ⁇ tion with solid state electronic traffic controllers having conflict monitors.
  • a maintenance crew must be dis ⁇ patched to replace the lamp.
  • the cost involved in changing such a lamp far exceeds the value of the lamp itself , often requiring lifting equipment to lif t personnel to the traf ⁇ fic s ignal which may be far above the street level , and the services of several persons to operate the lift, change the lamp , and direct traff ic .
  • traffic congestion and confusion of drivers and pedestrians may occur and an acci ⁇ dent may result.
  • I t i s we l l known that the use of a d i ode i n series with the f ilament of an incandescent lamp operated on alternating current significantly increases the li fe of the lamp , only requiring an increase in the lamp ' s wattage rating to produce a lumen output equivalent to the lamp previously used.
  • the diode provides half-wave rectified direct current to the lamp filament.
  • One approach to using a diode with a lamp is to install the diode in a disc-shaped support which is posi- tionable within the lamp socket with one contact surface in electrical contact with the center contact of the socket and another contact surface in electrical contact with the center contact of the lamp.
  • the diode is positioned within the diode disc and is connected between the two contact surfaces.
  • the disc is sometimes provided with an adhesive which may be used to glue the disc to the base of the lamp and allows the disc to travel with the lamp as it is screwed into the socket.
  • the present invention resides in a long-life in candescent lamp and a socket insert for use with convention- al lamps to provide long life.
  • the lamp includes a sealed glass envelope, a first electrical contact external of the glass envelope, a second electrical contact external of the glass envelope and electrically insulated from the first contact, an illuminable filament disposed within the glass envelope and electrically connected between the first and second contacts, a rectifier means for rectifying current to the filament, and a resistive means for providing a re ⁇ sistive bridge between the first and second contacts.
  • the resistive means has a resistance substantially in excess of the resistance of the filament.
  • one of the first or second contacts is a base fixedly attached to the glass envelope and sized to be received in a socket, while the other of the first or second contacts is a center contact fixedly attached to the base and electrically insulated therefrom.
  • a pair of lead wires extend within the glass envelope and the filament is electrically connected between the lead wires.
  • the rectifier means is a diode electrically connec ⁇ ted between one of the pair of lead wires and one of the base or center contacts in series with the filament, with the other one of the pair of lead wires being electrically connected to the other one of the base or center contacts.
  • the resistive means is a resistor.
  • the resistor is electrically connected between the center contact and the base in parallel with the in-series combination of the filament and the diode.
  • the resistor is electrically connected between the anode and the cathode of the diode in parellel with the diode.
  • the resistor When used with presently available solid state elee- tronic traffic controllers, the resistor has a resistance of no greater than 27K ohms. The diode rectifies the alter ⁇ nating current to provide a direct drive current to the filament to improve lamp life, and the resistor provides a low-current electrical bypass of the diode to avoid indica- tion of an error condition by the conflict monitor.
  • An alternative embodiment of the invention is a socket insert for use with a conventional incandescent lamp having a center base contact and operating on alternating current in order to extend the life of the lamp.
  • the in- sert includes a support body positionable within a lamp socket between the incandescent lamp and the center contact of the socket.
  • the support body has 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 is electrically connected between the first and second contacts, and a resistive ele ⁇ ment is also electrically connected between the first and second contacts in parallel with the diode.
  • Figure 1 is a schematic drawing of an incandes- cent lamp embodying the present invention.
  • FIG 2 is a schematic drawing of an alternative embodiment of the lamp shown in Figure 1.
  • FIG 3 is a schematic drawing of a socket in ⁇ sert embodying the present invention for use with a conven- tional incandescent lamp, showing the insert position be- tween the base of a lamp and a lamp socket prior to place ment of the insert within the socket.
  • Th lamp 10 includes a sealed glass envelope 12, a metallic screw base 14 fixedly attached to the lower end of th glass envelope, a pair of lead wires 16 and 18, and an illuminable filament 20 disposed within the glass envelope and connected between the lead wires. Except as will be described hereinafter, the lamp is of conventional and well known design, and will not be described or shown in detail herein.
  • One such incandescent lamp is shown and described in U.S. Patent No. 3,869,631, incorporated herein by reference.
  • the lead wire 18 is con ⁇ nected directly to the base 14.
  • the other lead wire 16 is connected to the cathode of a diode 22, and the anode of the diode is connected to ' a center contact 24 of the base 14.
  • the center contact 24 is fixedly attached to the base 14 and electrically insulated therefrom.
  • the center contact of the socket engages and makes electrical contact with the center contact 24 of the lamp 10
  • the base 14 engages and makes electrical contact with the correspondingly threaded portion of the socket.
  • the diode 22 rectifies the current to the fila ⁇ ment 20 to produce a half-wave rectified direct current and provide the long-life characteristic of the lamp.
  • the lamp 10 also includes a bypass resistor 26 electrically connecting the center contact 24 with the lamp base 14.
  • the by- pass resistor 26 is electrically connected between the anode and the cathode of the diode 22 in parallel with the diode.
  • the bypass resistor 26 is connected in parallel with the in-series combination of the filament 20 and the diode 22.
  • the bypass resistor 26 and the diode 22 are positioned within the lamp 10, external of the sealed glass envelope 12 containing the heated filament 20.
  • the bypass resistor 26 has a resistance substantially in excess of the resistance of the filament 20 and provides a low-current bypass of the diode 22.
  • the conflict monitor sensing circuits of the traffic controller with which the lamp 10 is used will sense a current path through the lamp 10 at all times.
  • the bypass resistor 26 provides a continuous electrical path to the conflict monitor which is necessary to avoid the monitor indicating a specious error condition and entering a conflict mode.
  • the current flow through the bypass resistor 26 when the diode 22 is back-biased will be at a substantially lower level than the current through the diode and filament when the diode is forward-biased with a drive current supplied to the filament.
  • bypass resistor 26 should be selected with as high a resistance value as will operate satisfactorily with the traffic con- troller with which the lamp 10 is used to avoid any unneces ⁇ sary dissipation of energy during the portion of the alter ⁇ nating current cycle when the diode 22 is reverse-biased.
  • the lamp 10 has been des cribed as a traffic control lamp
  • the lamp of the presen invention may be used in other situations, such as security light monitored by a sensing circuit which wil not function when a diode is used in the conventional man ner to achieve long life for the lamp.
  • the orientation of the diode 22 may be reversed or th diode may be connected between the lead wire 18 and the base 14, while still achieving the benefit of the present invention.
  • the present invention may be used when the alternating current powering the lamp is rectified to a greater or lesser r ex ⁇ tent.
  • the bypass resistor 26 of the present invention may be a resistor of fixed value or may have the necessary resistance supplied by a variable resistor or other device having a resistive element, such as a thermistor.
  • the by ⁇ pass resistor 26 and the diode 22 may be fabricated as dis ⁇ crete components, as an integrated circuit, or otherwise.
  • the bypass resistor 26 can be produced by a com ⁇ bination of resistive elements in series or parallel produc- ing the desired resistance.
  • the bypass resistor 26 may be a discrete component of conventional design and will typically have a standard power rating which makes the component readily available and inexpensive. Using an al- ternating current with a line voltage of 110 volts and a resistance of 22K ohms for the bypass resistor 26, the maxi ⁇ mum power dissipated by the resistor is only slightly in excess of one-half watt.
  • the diode 22 and the bypass resistor 26 may be located at any desirable location with ⁇ in or outside of the lamp, as dictated by manufacturing economics or design choice.
  • FIG. 3 Another alternative embodiment of the invention is shown in Figure 3 and includes a socket insert, indica ⁇ ted generally by reference numeral 28.
  • the insert 28 has a support body 30 with a disc shape sized for insertion into a lamp socket 32.
  • the insert 28 is positioned within the socket 32 between a center contact 33 of the socket and a center contact 34 of a conventional lamp 36.
  • the insert 28 is provided with a first contact surface 38 positioned on one face of the disc body 30 for engagement and electrical contact with the center contact 34 of the lamp 36, and a second contact surface 40 position- ,ed on the opposite face of the disc body for engagement and electrical contact with the center contact 33 of the socket 32.
  • Electrically connected in parallel between the first and second contact surface ' s 38 and 40 is a diode 22' and a bypass resistor 26'.
  • the bypass resistor 26* pro ⁇ vides a continuous electrical path through the lamp 36 even when the diode 22* is reverse-biased to prevent the traffic controller with which the conventional lamp 36 is being using from indicating an error condition and entering a conflict mode.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Ampoule à incandescence de longue durée et pièce rapportée de culot destinée à être utilisée en combinaison avec des ampoules normales pour en prolonger la durée. L'ampoule (10) comprend une enveloppe en verre scellée (12), une base (14) fixée sur l'enveloppe en verre, un contact central (24) fixé sur la base et isolé électriquement de celle-ci, une paire de fils conducteurs (16, 18) s'étendant à l'intérieur de l'enveloppe, un filament éclairant (20) contenu dans l'enveloppe et connecté électriquement entre les fils conducteurs, une diode (22) connectée électriquement entre le contact central et un fil conducteur et asssurant le redressement demi-onde du courant alimentant le filament , et une résistance (26) formant un pont résistif entre la base et le contact central. La valeur de cette résistance dépasse essentiellement celle du filament, sans toutefois dépasser de préférence 27 Kohms.
PCT/US1986/002678 1984-06-01 1986-12-12 Ampoule de longue duree et piece rapportee de culot destinees a etre utilisees dans des installations de regulation de la circulation WO1988004516A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06/616,492 US4629943A (en) 1984-06-01 1984-06-01 Long life traffic control lamp and socket insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/616,492 US4629943A (en) 1984-06-01 1984-06-01 Long life traffic control lamp and socket insert

Publications (1)

Publication Number Publication Date
WO1988004516A1 true WO1988004516A1 (fr) 1988-06-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/002678 WO1988004516A1 (fr) 1984-06-01 1986-12-12 Ampoule de longue duree et piece rapportee de culot destinees a etre utilisees dans des installations de regulation de la circulation

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Country Link
WO (1) WO1988004516A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269492A (en) * 1992-08-05 1994-02-09 Stephen Leslie Ballantyne Power reducing circuit for A.C. Load

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818263A (en) * 1972-05-05 1974-06-18 W Belko Electronic component
US3836814A (en) * 1972-12-22 1974-09-17 E Rodriquez Three-way lamp converter
US3869631A (en) * 1973-02-26 1975-03-04 Gte Sylvania Inc Diode-containing incandescent lamp having improved efficiency
US3975658A (en) * 1975-06-10 1976-08-17 Westinghouse Electric Corporation Mass of current inrush limiters
US4435671A (en) * 1982-04-26 1984-03-06 Eli, Inc. Device for prolonging the life of an incandescent lamp
US4473776A (en) * 1982-06-11 1984-09-25 General Electric Company Disconnect means for capacitor ballast incandescent lamp
US4480212A (en) * 1982-06-14 1984-10-30 Diolight Technology, Inc. Extended life incandescent lamp with self contained diode and reflector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818263A (en) * 1972-05-05 1974-06-18 W Belko Electronic component
US3836814A (en) * 1972-12-22 1974-09-17 E Rodriquez Three-way lamp converter
US3869631A (en) * 1973-02-26 1975-03-04 Gte Sylvania Inc Diode-containing incandescent lamp having improved efficiency
US3975658A (en) * 1975-06-10 1976-08-17 Westinghouse Electric Corporation Mass of current inrush limiters
US4435671A (en) * 1982-04-26 1984-03-06 Eli, Inc. Device for prolonging the life of an incandescent lamp
US4473776A (en) * 1982-06-11 1984-09-25 General Electric Company Disconnect means for capacitor ballast incandescent lamp
US4480212A (en) * 1982-06-14 1984-10-30 Diolight Technology, Inc. Extended life incandescent lamp with self contained diode and reflector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269492A (en) * 1992-08-05 1994-02-09 Stephen Leslie Ballantyne Power reducing circuit for A.C. Load

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