GB731695A - Improvements in or relating to colour-television receivers - Google Patents
Improvements in or relating to colour-television receiversInfo
- Publication number
- GB731695A GB731695A GB24593/52A GB2459352A GB731695A GB 731695 A GB731695 A GB 731695A GB 24593/52 A GB24593/52 A GB 24593/52A GB 2459352 A GB2459352 A GB 2459352A GB 731695 A GB731695 A GB 731695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- air
- blades
- fan
- tube
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
731,695. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 1, 1952 [Oct. 4, 1951], No. 24593/52. Class 40 (3). In a colour television system in which a movable colour filter is positioned in front of the screens of a cathode-ray picture reproducing tube the driving source which actuates the filter is also utilized for driving an air-blower (fan) which produces an air-current for cooling the screen of the tube. The filter itself may be suitably shaped to produce the required aircurrent or a separate bowling device, e.g. a fan, &c., may be employed. Examples of the former are shown in Fig. 1, where the filter comprises a disc 3 provided with blades 5 positioned along the circumferential edge and in Figs. 2 and 3, where the filter comprises a cone 9 provided with blades 10 near the apex thereof. In a modification of this latter arrangement (Fig. 5) the cone in addition to being provided with blades 18 is further provided with helically curved air-guiding strips 19 which convey the air-current to the screen of the tube. An example of the arrangement employing a separate blowing device is shown in Fig. 4 where the filter comprises a truncated cone 13 provided with apertures 14 in the plane of truncation for the passage of air-currents produced by a fan 15 carried by the shaft 16 which also drives the filter. Specification 473,323 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL731695X | 1951-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB731695A true GB731695A (en) | 1955-06-15 |
Family
ID=19820166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24593/52A Expired GB731695A (en) | 1951-10-04 | 1952-10-01 | Improvements in or relating to colour-television receivers |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE923854C (en) |
| FR (1) | FR1064082A (en) |
| GB (1) | GB731695A (en) |
| NL (1) | NL164410B (en) |
-
0
- NL NL7404362.A patent/NL164410B/en unknown
-
1952
- 1952-10-01 DE DEN6162A patent/DE923854C/en not_active Expired
- 1952-10-01 GB GB24593/52A patent/GB731695A/en not_active Expired
- 1952-10-03 FR FR1064082D patent/FR1064082A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE923854C (en) | 1955-02-21 |
| NL164410B (en) | |
| FR1064082A (en) | 1954-05-11 |
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