Matsushita Electric Industrial Co., Ltd.

Matsushita Electronics Corporation

Panasonic Corporation

Yasuyuki Ueda

Masahiko Sukeno

Takaari Uemoto

Kazunori Ohta

Hideo Nagai

Masahiro Miki

Makoto Inoue

Kenji Takahashi

Naotaka Hashimoto

Takeshi Saito

Shinya Kawagoe

Hiroshi Nohara

Taku Ikeda

Toshiyasu Kojima

Takashi Ito

Masahide Yamauchi

Masayuki Isayama

Mitsuko Shuto

Katsuhisa Kitada

A mount member () has a contact surface () touching the bottom surface of an LED module () and protrusions () protruding from the periphery of the contact surface () in the thickness direction of the LED module () and regulating sliding motions thereof. A fixing member () made of a resilient, plate-like member comprises an opposing pair of flat portions () near the contact surface () of the mount member () and flat tabs () projecting from the flat portions () toward the contact surface () touching the upper surface of a substrate (). The flat portions () of the fixing member () are fastened to be lower than the top surface of the substrate () of the LED module (). Thus, elastically deformed areas extending from the fastened parts of the flat portions () through the flat tabs () press the substrate () into the mount member ().

Illumination device including a light-emitting module fastened to mount member with a constant orientation

Provided is a light-bulb type LED lampincluding a plurality of LEDs-, a base, a lighting circuit unit that converts commercial power provided through the baseinto power for lighting the LEDs-, and a heat radiation memberthat includes a bowl-shaped portion. Two stagesand, extending inwards from an inner circumferential surfaceof the bowl-shaped portion, are provided in a direction of a central axis X of the bowl-shaped portion. The LEDs-are mounted on the stagesandin a circumferential direction around the central axis X.

Light-bulb type LED lamp and illumination apparatus

Provided is a bulb-type LED lampconfigured to diffuse light outward through a globe. The bulb-type LED lampincludes LED modules, each having a mounting substrate and LEDs mounted on the mounting substrate, and a basethrough which power is supplied to the LEDs for light emission. The LED lampalso includes a light diffusing member. Among the LED modules, the LED moduleis positioned on an imaginary extension of a central axis X of the base, and the light diffusing memberis positioned inside the globeto receive light emitted from the LED module. The other LED modulesare positioned in a vicinity of the LED module, tilted to face the light diffusing member

LED lamp and lighting device

A color picture tube apparatus having an inline electron gun that allows technology for applying a dynamic voltage to an OLF lens to be implemented, while avoiding design difficulties. Eave-shaped electrode plates are attached, parallel with each other in a horizontal scan direction, to a field-correction electrode plate, which is a horizontally long, flatten plate in which three holes are provided, and whose shape is similar to that of an aperture in a circumferential electrode. This structure allows quadrupole lenses to be formed as auxiliary lenses having strong focusing action horizontally and divergent action vertically, and thus an HV differential can be increased. As a result, it is possible to reduce the dynamic voltage without any of the design difficulties accompanying the prior art, in which eave-shaped electrode plates are not provided.

Color picture tube apparatus

A set of three cathodes, a control electrode, an accelerating electrode, a first focus electrode, a second focus electrode, a third focus electrode, a fourth focus electrode, a final accelerating electrode and a shield cup electrode are provided successively in an electron beam travelling direction. The shield cup electrode has a pair of screen-shaped electrodes that sandwich electron-beam through-holes in a vertical direction. A quadrupole lens that has a horizontal convergent action and a vertical divergent action is generated by an electrical potential difference between the screen-shaped electrodes and the final accelerating electrode. Accordingly, even if vertical and horizontal convergence power difference in a main lens formed by the fourth focus electrode and the final accelerating electrode is not large, a composite lens formed through a combination of the quadrupole lens and the main lens has strong horizontal convergence power and weak vertical convergence power.

Electron gun and color picture tube apparatus that attain a high degree of resolution over the entire screen

The present invention provides a high-resolution color picture tube device with a decreased beam spot diameter. The color picture tube device has an electron gun including cathodes, a control electrode, an accelerating electrode, a G electrode, a first focusing electrode, a second focusing electrode, and a final accelerating electrode that are arranged in this order. A voltage applied to the G electrode is obtained by dividing with a resistor a voltage applied to the final accelerating electrode, and when an electron beam is a non-deflection state, a relationship represented as Va>Vg >Vfoc is satisfied where Va, Vg , and Vfoc denote voltages respectively applied to the final accelerating electrode, the G electrode and the second focusing electrode. Thereby, the G electrode is applied with a high voltage independently for forming a prefocus lens.

Color picture tube device

A color TV tube apparatus having a horizontal deflection coil for generating a pincushion-shaped horizontal deflection field, which uses a self-convergence method. In such a color TV tube, the horizontal deflection coil is adjusted so that the vertical focus points of the electron beams lie 50 mm or less on the inside and 30 mm or less on the outside of each edge of the effective display screen area along the horizontal axis. The horizontal deflection coil is adjusted with the focusing of an electron beam by a lensing action of an electron gun non-operational.

Color TV tube apparatus and color display tube apparatus

A color picture tube of the present invention comprises three in-line cathodes (,) aligned in the horizontal direction, a first focussing electrode (,) supplied with a focus voltage, a second focussing electrode (,) supplied with a dynamic voltage that changes in accordance with a deflection angle of the electron beams, a final accelerating electrode (,) supplied with an anode voltage, an intermediate auxiliary electrode (,) arranged between the second focussing electrode (,) and the final accelerating electrode (,). The intermediate auxiliary electrode (,) is supplied with a voltage between the voltage of the second focussing electrode (,) and the anode voltage. A non-axisymmetric electrostatic lens for focussing electron beams in the horizontal direction and diverging them in the vertical direction is formed between the first and second focussing electrodes (,). The power of the non-axisymmetric electrostatic lens changes in accordance with a deflection angle of the electron beam.

Color picture tube

Four magnetic pieces are provided inside the cup-shaped portion of a shield cup. Correction magnetic field generating faces at the tips of the magnetic pieces are opposed to each other and sandwich an electron beam. Correction can be conducted according to the astigmatism amount of three electron beams because a correction magnetic field corresponding to the strength of a deflection magnetic field can be generated easily by leading the deflection magnetic field absorbed by the principal face portion of each magnetic piece to the correction magnetic field generating face. Thus, the difference in astigmatism amount among the electron beams caused by the deflection magnetic field can be corrected. Therefore, a color cathode ray tube apparatus that can display images with a high resolution over the whole screen surface can be provided.

Color cathode ray tube with astigmatism correction system

A color picture tube apparatus comprises auxiliary electrodes provided between first and second focusing electrodes, a nonaxisymmetric electrostatic lens is generated between the auxiliary electrodes and a focusing lens is generated between the first focusing electrode and the auxiliary electrode. A dynamic voltage V.sub.d is applied to the first and second focusing electrodes. Consequently, the effect of compensating the astigmatism of the electron beam caused by the deflection magnetic field and the defocus of the electron beam can be increased, the dynamic voltage can be decreased, and as a result, the cost of the circuit can be reduced. As the focusing function of the additional focusing lens is weakened and the electron beam trajectory is expanded, the magnification of the lens both at the center and the periphery of the screen can be equalized substantially and the uniformity of the focus of the electron beam between that at the center of the screen and that at the periphery of the screen becomes high.

A color picture tube apparatus comprises cathodes, a control electrode, an accelerating electrode, a first focusing electrode, a second focusing electrode and a final accelerating electrode, a voltage applying means which applies a dynamic voltage which increases with increasing deflection angle to the second focusing electrode, a resistor which is connected between the first and second focusing electrodes. Electron beam through holes that are vertically oblong are provided at the facing sides of the second focusing electrode and the final accelerating electrode. A quadrupole electric field lens is formed wherein a focusing effect is obtained in the horizontal direction and a diverging effect is obtained in the vertical direction when the potential level of the second focusing electrode is higher than that of the first focusing electrode. A compensating means generates a combined focusing effect of the electric field lenses formed between the cathodes and the final accelerating electrode stronger in the horizontal direction than in the vertical direction when the potential levels of the first and second focusing electrodes are the same.

In a color picture tube having a wide and flat screen, one set of in-line three electron beam through holes on an end face of a first focusing electrode facing a second focusing electrode are formed with a vertically oblong rectangular shape, and the other set of in-line three electron beam through holes on an end face of the second focusing electrode facing the first focusing electrode are formed with a horizontally oblong rectangular shape, a pair of protrusions is provided on a pair of longer sides of each of the electron beam through holes. Therefore, intensive quadrupole fields, by which deflection distortion can be cancelled, can be generated. Fluctuation of the quadrupole fields due to interference of a dynamic voltage and focusing voltage, which are to be applied to the focusing electrodes, can be prevented.

Color picture tube and in-line electron gun with focusing electrodes

A color-picture tube having a convergence electrode, to which a focusing voltage is applied, a final accelerating electrode, to which an anode voltage is applied, and at least one supplementary electrode placed between the convergence electrode and the final accelerating electrode, to which either (1) a voltage higher than the focusing voltage and lower than the anode voltage is applied or (2) no voltage is applied, resulting in the supplementary electrode being free from a directly applied electric potential, wherein its electric potential is induced by the convergence electrode and the final accelerating electrode. Each of the convergence electrode and the final accelerating electrode is a tube having an elliptical cross section closed with an elliptical end plate having three holes arranged in-line for electron passage. In at least one of the tubes, the end plate is positioned away from the opening of the tube closer to the supplementary electrode. The supplementary electrode is a tube of elliptical cross section arranged coaxially with the convergence electrode and final accelerating electrode. A high resolution picture is obtained without enlarging the bulb neck of the picture tube.

Growing community of inventors

Osaka, Japan

Yasuyuki Ueda