a led filament
A technology of LED filament and LED chip, which is applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of reducing the junction temperature of the overall LED filament and the maximum temperature of the substrate, and uneven heat distribution, so as to reduce product brightness, improve quality and Service life, overcoming the effect of high temperature
Active Publication Date: 2018-11-20
JIANGXI LIANCHUANG OPTOELECTRONIC SCIENCE AND TECHNOLOGY CO LTD
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Problems solved by technology
[0005] In view of the above problems, the present invention provides an LED filament, which solves the problems of uneven heat distribution in the existing LED filament, improves the heat dissipation performance of the LED filament, and reduces the junction temperature and the maximum temperature of the substrate of the overall LED filament
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[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.
[0029] The present invention provides an LED filament, specifically, the LED filament includes: a substrate 1 and at least one row of LED chip groups arranged on the substrate; both ends of the substrate are provided with a metal layer 3 and a metal frame fixedly connected to the metal layer 4. The metal layer is connected to its adjacent LED chips 2 through metal wires 5; each row of LED chip groups includes a plurality of LED chips 2 arranged symmetrically based on the center of ...
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The invention provides an LED lamp filament. The LED lamp filament comprises a substrate and at least one row of LED chipset arranged on the substrate, wherein a metal layer and a metal frame which is fixedly connected with the metal layer are arranged at the two ends of the substrate; the metal layer is connected with an adjacent LED chip through a metal wire; each row of LED chipset comprises multiple LED chips which are arranged symmetrically based on the center of the substrate; every two LED chips are connected through the metal line; the distances between every two LED chips are gradually increased in a direction from the end part of the substrate to the center position of the substrate; and the distances between every two LED chips are arranged in a Fibonacci sequence manner. Compared with the existing LED chips which are arranged at equal spacings in an arithmetic progression manner, the shortcoming of overhigh temperature of the middle part of the substrate is effectively overcome; and in a large range on the middle area of the lamp filament, the temperature of the substrate and the temperature of the LED chips are both quite low.
Description
technical field [0001] The invention relates to the technical field of semiconductors, in particular to an LED filament. Background technique [0002] LED light sources have the characteristics of high luminous efficiency, energy saving, environmental protection, and long life, and are called "green lighting sources". In the past, in order to achieve a certain luminous intensity and the uniformity of spatial light intensity, optical devices such as reflective surfaces and lenses were required for LED light sources, which affected the lighting effect and reduced the energy-saving effect of LEDs. A plurality of LED chips are packaged on a transparent substrate in series to form an LED filament. The LED filament can emit light at all angles of 360°, integrates high-voltage drive, and does not need to add a lens to realize a three-dimensional light source, which conforms to the traditional lighting usage habits and brings an unprecedented lighting experience. [0003] Existing...
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IPC IPC(8): H01L25/075
CPCH01L25/0753
Inventor 于天宝佘君黄建民杨文李芳昕
Owner JIANGXI LIANCHUANG OPTOELECTRONIC SCIENCE AND TECHNOLOGY CO LTD