Bulb provided with flexible LED lamp filament and flexible LED lamp filament manufacturing method

Abstract

The invention discloses a bulb provided with a flexible LED lamp filament. The bulb provided with the flexible LED lamp filament comprises a transparent bulb housing, an LED lighting source, a stem, an LED driver and an electric connector, wherein the stem is provided with a supporting column, an air exhausting tube and an electric exporting rod; the LED lighting source comprises at least one or aplurality of flexible LED lamp filaments which are connected into the vacuum sealed bulb housing through the electric exporting rod in a bending or straightening state. According to the bulb providedwith the flexible LED lamp filament, a plurality of LED chips are reversely mounted on a flexible substrate, and the LED light source can be fixed into the bulb housing by bending in a structure similar to that of tungsten wires; and the flexible LED lamp filament is uniform to lighting, and high in wattage. The invention also discloses a manufacturing method of the flexible LED lamp filament. With the adoption of the bulb provided with the flexible LED lamp filament and the manufacturing method of the flexible LED lamp filament, the problem of difficult heat dissipating and difficult mounting due to a large number of LED light sources in a bulb with the same capacity can be solved; and moreover, various different lighting shapes can be realized by simple hooking and connecting modes; andthe demands of various different situations on lighting decoration can be met.

Description

technical field [0001] The invention relates to the field of lighting fixtures, in particular to a light bulb installed with a flexible LED filament and a preparation method for the flexible LED filament. Background technique [0002] Humans really entered the era of lighting, which should have started in 1906 when the American Coolidge invented the light bulb lit by tungsten filaments. This era has lasted for 110 years (it is estimated that less than one tenth of the energy is converted into Light energy), the tungsten wire has sufficient luminous brightness and guaranteed luminous life, which is the main reason why it has remained unbeaten for hundreds of years. However, during the use of tungsten wire, it gradually shows the shortcomings of high heat loss and large power consumption ( It is estimated that less than one-tenth of the energy is converted into light energy), so it is gradually replaced by a new light-emitting product: LED light source. As we all know, LED lig...

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Problems solved by technology

For example, in the patent No. 201210063705.9 (an LED light bulb) applied by Zhejiang Radison Optoelectronics Co., Ltd. on March 12, 2012, it stated that "the LED light source is composed of at least one transparent LED light-emitting column; the LED light-emitting column includes: A high thermal conductivity transparent tube inserted on the outer surface of the pillar, and at least a string of LED chips and a luminescent powder layer are installed on the surface of the transparent tube”; it can be seen from the claims and description of the patent that the LED lamp is composed of multiple light-transmitting LEDs Composed of light-emitting columns, due to the large number of LED chips, the brightness is sufficient to ensure, but due to the limited space, its heat dissipation is a big problem, and the heat dissipation structure needs to be increased accordingly, and the manufacturing cost will also increase accordingly.

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