GB1590840A - Combined vehicle rear screen heater and radio receiving aerial installation - Google Patents

Combined vehicle rear screen heater and radio receiving aerial installation Download PDF

Info

Publication number
GB1590840A
GB1590840A GB3299976A GB3299976A GB1590840A GB 1590840 A GB1590840 A GB 1590840A GB 3299976 A GB3299976 A GB 3299976A GB 3299976 A GB3299976 A GB 3299976A GB 1590840 A GB1590840 A GB 1590840A
Authority
GB
United Kingdom
Prior art keywords
conductors
wire
vehicle
installation
rear screen
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
Application number
GB3299976A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB3299976A priority Critical patent/GB1590840A/en
Priority to IT5057977A priority patent/IT1080097B/en
Priority to FR7724244A priority patent/FR2361004A1/en
Priority to DE19772735278 priority patent/DE2735278A1/en
Priority to ES461452A priority patent/ES461452A1/en
Publication of GB1590840A publication Critical patent/GB1590840A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
    • B60S1/58—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows
    • B60S1/586—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows including defroster or demisting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Aerials (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Description

(54) COMBINED VEHICLE REAR SCREEN HEATER AND RADIO RECEIVING AERIAL INSTALLATION (71) We, LUCAS INDUSTRIES LIMITED, a British Company of Great King Street, Birmingham B19 2XF, do hereby declare the invention for which we pray that a Patent may be granted to us and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a combined vehicle rear screen heater and radio receiving aerial installation and has as an object to provide such an installation in a convenient form.
An installation in accordance with the invention comprises an array of heating conductors on the vehicle rear screen, a switch remote from the rear screen for controlling the connection of said conductors across a vehicle supply, a length of wire for carrying d.c. heating current from the switch to the conductors, inductance means in the path of the heating current and disposed adjacent the conductors for providing r.f.
isolation of the conductors from the wire and from the vehicle earth, r.f. coupling means for coupling r.f. signals picked up by the conductors to a transmission cable, and r.f. decoupling means connected to said wire adjacent the switch, for decoupling to the vehicle earth r.f. signals present on the vehicle supply.
An example of the invention is shown diagrammatically in the accompanying drawing.
The installation shown in the drawing includes an array of heater conductors 10 on the rear screen 11 for heating the screen and also acting as a radio receiving aerial.
The conductors 10 are connected in parallel between two bus bars 12, 13, one (12) of which is connected via a winding 14, to a heater control switch 15, by a length of wire 17. The switch 15 may be a manual switch or a contact of a relay and serves to connect the wire 17 to the vehicle supply battery 18. Another winding 19 bifilar wound with the winding 14 on a toroidal core 20 connects the bus bar 13 to the vehicle earth so that heater current flowing through the windings 14, 19 in series provides equal and opposite flux in the core.
R.F. coupling means in the form of a capacitor 21 is provided for coupling the bus bar 13 to a transmission cable 22.
A capacitor 23 conneots the junction of the wire 17 and the winding 14 to the vehicle earth so that the capacitor 23 decouples any R.F. signals pasisng along the wire 17 from the supply and also ensures a balanced r.f. output from the conductors 10 when acting as an aerial.
A further capacitor 24 provides r.f. decoupling means for the wire 17 adjacent the switch 15 which is remote from the rear screen, windings 14 and 19 being adjacent the rear screen. The capacitor 24 ensures that r.f. present on the supply (e.g. ignition noise) is decoupled to the vehicle earth at the switch 15 so that the wire 17 does not act as a radiating aerial radiating r.f. signals for reception by the conductors 10.
WHAT WE CLAIM IS: 1. A combined vehicle rear screen heater and radio receiving aerial installation comprising an array of heating conductors on the vehicle rear screen, a switch remote from the rear screen for controlling the connection of said conductors across a vehicle supply, a length of wire for carrying d.c.
heating current from the switch to the conductors, inductance means in the path of said heating current and disposed adjacent the conductors for providing r.f. isolation of the conductors from the wire and from the vehicle earth, r.f. coupling means for coupling r.f. signals picked up by the conductors to a transmission cable, and r.f. decoupling means connected to said wire adjacent the switch, for decoupling to the vehicle earth r.f. signals present on the vehicle supply.
2. An installation as claimed in claim 1 in which said decoupling means comprises a capacitor connected between said wire and the vehicle earth.
3. An installation as claimed in claim 1 or claim 2 in which said inductance means comprises a pair of windings connecting said wire to one side of the array of heating conductors and the other side of said array of heating conductors to the vehicle
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. (54) COMBINED VEHICLE REAR SCREEN HEATER AND RADIO RECEIVING AERIAL INSTALLATION (71) We, LUCAS INDUSTRIES LIMITED, a British Company of Great King Street, Birmingham B19 2XF, do hereby declare the invention for which we pray that a Patent may be granted to us and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a combined vehicle rear screen heater and radio receiving aerial installation and has as an object to provide such an installation in a convenient form. An installation in accordance with the invention comprises an array of heating conductors on the vehicle rear screen, a switch remote from the rear screen for controlling the connection of said conductors across a vehicle supply, a length of wire for carrying d.c. heating current from the switch to the conductors, inductance means in the path of the heating current and disposed adjacent the conductors for providing r.f. isolation of the conductors from the wire and from the vehicle earth, r.f. coupling means for coupling r.f. signals picked up by the conductors to a transmission cable, and r.f. decoupling means connected to said wire adjacent the switch, for decoupling to the vehicle earth r.f. signals present on the vehicle supply. An example of the invention is shown diagrammatically in the accompanying drawing. The installation shown in the drawing includes an array of heater conductors 10 on the rear screen 11 for heating the screen and also acting as a radio receiving aerial. The conductors 10 are connected in parallel between two bus bars 12, 13, one (12) of which is connected via a winding 14, to a heater control switch 15, by a length of wire 17. The switch 15 may be a manual switch or a contact of a relay and serves to connect the wire 17 to the vehicle supply battery 18. Another winding 19 bifilar wound with the winding 14 on a toroidal core 20 connects the bus bar 13 to the vehicle earth so that heater current flowing through the windings 14, 19 in series provides equal and opposite flux in the core. R.F. coupling means in the form of a capacitor 21 is provided for coupling the bus bar 13 to a transmission cable 22. A capacitor 23 conneots the junction of the wire 17 and the winding 14 to the vehicle earth so that the capacitor 23 decouples any R.F. signals pasisng along the wire 17 from the supply and also ensures a balanced r.f. output from the conductors 10 when acting as an aerial. A further capacitor 24 provides r.f. decoupling means for the wire 17 adjacent the switch 15 which is remote from the rear screen, windings 14 and 19 being adjacent the rear screen. The capacitor 24 ensures that r.f. present on the supply (e.g. ignition noise) is decoupled to the vehicle earth at the switch 15 so that the wire 17 does not act as a radiating aerial radiating r.f. signals for reception by the conductors 10. WHAT WE CLAIM IS:
1. A combined vehicle rear screen heater and radio receiving aerial installation comprising an array of heating conductors on the vehicle rear screen, a switch remote from the rear screen for controlling the connection of said conductors across a vehicle supply, a length of wire for carrying d.c.
heating current from the switch to the conductors, inductance means in the path of said heating current and disposed adjacent the conductors for providing r.f. isolation of the conductors from the wire and from the vehicle earth, r.f. coupling means for coupling r.f. signals picked up by the conductors to a transmission cable, and r.f. decoupling means connected to said wire adjacent the switch, for decoupling to the vehicle earth r.f. signals present on the vehicle supply.
2. An installation as claimed in claim 1 in which said decoupling means comprises a capacitor connected between said wire and the vehicle earth.
3. An installation as claimed in claim 1 or claim 2 in which said inductance means comprises a pair of windings connecting said wire to one side of the array of heating conductors and the other side of said array of heating conductors to the vehicle earth respectively.
4. An installation as claimed - in claim 3 in which said windings are on a common core.
5. An installation as claimed in claim 4 in which said windings are bi-filarly wound.
6. An installation as claimed in claim 4 or claim 5 in which said core is toroidal.
7. An installation as claimed in claim 2 and claim 3, 4, 5 or 6 including a further decoupling capacitor connecting the junction of said wire with said inductance means to the vehicle earth.
8. An installation as claimed in any one of claims 3 to 7 inclusive in which said r.f. coupling means comprises a capacitor connecting said other side of the array of heating conductors to the transmission cable.
9. A combined vehicle rear screen heater and radio receiving aerial installation substantially as hereinbefore described with reference to the accompanying drawing.
GB3299976A 1976-08-07 1976-08-07 Combined vehicle rear screen heater and radio receiving aerial installation Expired GB1590840A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3299976A GB1590840A (en) 1976-08-07 1976-08-07 Combined vehicle rear screen heater and radio receiving aerial installation
IT5057977A IT1080097B (en) 1976-08-07 1977-08-05 COMBINED HEATER AND RADIO ANTENNA SYSTEM FOR REAR WINDOWS OF VEHICLES
FR7724244A FR2361004A1 (en) 1976-08-07 1977-08-05 COMBINED INSTALLATION OF VEHICLE REAR WINDOW DEFROST AND RADIO RECEPTION ANTENNA
DE19772735278 DE2735278A1 (en) 1976-08-07 1977-08-05 COMBINATION OF REAR WINDOW HEATING AND RADIO RECEIVER
ES461452A ES461452A1 (en) 1976-08-07 1977-08-08 Combined vehicle rear screen heater and radio receiving aerial installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3299976A GB1590840A (en) 1976-08-07 1976-08-07 Combined vehicle rear screen heater and radio receiving aerial installation

Publications (1)

Publication Number Publication Date
GB1590840A true GB1590840A (en) 1981-06-10

Family

ID=10347173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3299976A Expired GB1590840A (en) 1976-08-07 1976-08-07 Combined vehicle rear screen heater and radio receiving aerial installation

Country Status (5)

Country Link
DE (1) DE2735278A1 (en)
ES (1) ES461452A1 (en)
FR (1) FR2361004A1 (en)
GB (1) GB1590840A (en)
IT (1) IT1080097B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002512A1 (en) * 1984-09-19 1987-04-23 Intreprinderea De Calculatoare Electronice Solar car battery
FR2812137A1 (en) * 2000-07-24 2002-01-25 Marwal Systems Electrical, electromagnetic disturbance suppresser circuit for use, but not exclusively , with an automobile fuel pump, uses a self magnetizing component in series between pump housing and a filter earth

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1600987A (en) * 1977-08-17 1981-10-21 Bsh Electronics Manchester Ltd Electrical device to enable the heating element of an electrically heated motor vehicle window to be used as a radio transmitting aerial
JPS5791612A (en) * 1980-11-28 1982-06-07 Nissan Motor Wire harness wiring system
US4654669A (en) * 1983-12-20 1987-03-31 Bsh Electronics, Ltd. Electrical signal separating device for window antenna having isolating and matching circuitry
US4903034A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4928108A (en) * 1983-12-20 1990-05-22 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry for split passband matching
US4903035A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
GB8402244D0 (en) * 1984-01-27 1984-02-29 Pilkington Brothers Plc Glass window
US5231408A (en) * 1986-11-21 1993-07-27 Harada Kogyo Kabushiki Kaisha Glass antenna amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002512A1 (en) * 1984-09-19 1987-04-23 Intreprinderea De Calculatoare Electronice Solar car battery
FR2812137A1 (en) * 2000-07-24 2002-01-25 Marwal Systems Electrical, electromagnetic disturbance suppresser circuit for use, but not exclusively , with an automobile fuel pump, uses a self magnetizing component in series between pump housing and a filter earth
WO2002008020A1 (en) * 2000-07-24 2002-01-31 Marwal Systems Electric equipment for motor vehicles

Also Published As

Publication number Publication date
IT1080097B (en) 1985-05-16
ES461452A1 (en) 1978-05-16
DE2735278A1 (en) 1978-02-16
FR2361004A1 (en) 1978-03-03
FR2361004B1 (en) 1980-01-18

Similar Documents

Publication Publication Date Title
GB1590840A (en) Combined vehicle rear screen heater and radio receiving aerial installation
GB1159367A (en) Radio-Frequency Directive Quadrature Couplers
US4928108A (en) Electrical signal separating device having isolating and matching circuitry for split passband matching
EP0665656B1 (en) Inductive radio communication system
JP2000151248A (en) Glass antenna device for vehicle
JPS6347058Y2 (en)
US4654669A (en) Electrical signal separating device for window antenna having isolating and matching circuitry
US3111669A (en) Omnidirectional signal receiving system
US4148036A (en) Magnetic quadrapole antenna
JPH0815243B2 (en) Signal separation device
US4311974A (en) Wide band directional coupler
EP0146339B1 (en) Electrical signal separating device having isolating and matching circuitry
JPS6240893B2 (en)
US4382260A (en) Two channel transmit only antenna
EP0456337A2 (en) Radio receiver antenna systems
US4571596A (en) Antenna matching device
WO2015198800A1 (en) Antenna coil and antenna system
US4208633A (en) Current supply branching arrangement for separation of signal and supply currents
US4903034A (en) Electrical signal separating device having isolating and matching circuitry
JPH0756495Y2 (en) Antenna device for car window
US2243180A (en) All-wave radio receiving system
JPS646600Y2 (en)
JPS6489601A (en) Loading antenna for inductive radio
US2531146A (en) System of polarizing relays
JPS6133730Y2 (en)

Legal Events

Date Code Title Description
49R Reference inserted (sect. 9/1949)
PS Patent sealed
SP Amendment (slips) printed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940729