Local vacuum coating equipment for inner wall of bulb glass shell
A technology of partial vacuum and coating equipment, which is applied in the directions of vacuum evaporation coating, sputtering coating, ion implantation coating, etc., and can solve the problems of high risk and high production cost
Pending Publication Date: 2020-12-01
重庆冠昌光电科技有限公司
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Problems solved by technology
Because it involves strong acid and strong alkali, the production process is highly dangerous, and at the same time, a large amount of toxic and harmful solutions need to be disposed of during the production process, which increases the production cost
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[0020] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0021] figure 1 It is a schematic diagram of the local vacuum coating equipment on the inner wall of the bulb glass bulb provided by an embodiment of the present invention, figure 2 It is an installation diagram of an evaporation boat provided by an embodiment of the present invention, image 3 is a cross-sectional view of a shielding device provided by an embodiment of the present invention, Figure 4 It is a top view of the shielding device provided by an embodiment of the present invention, see Figure 1-...
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The invention discloses local vacuum coating equipment for the inner wall of a bulb glass shell. The local vacuum coating equipment comprises a shielding device, an evaporation boat, an electric wire,a supporting column and a supporting column sleeve, wherein the shielding device is arranged at one end of the supporting column sleeve at an interval; the supporting column is arranged in the supporting column sleeve; the evaporation boat is arranged at the end, close to the shielding device, of the supporting column; and the electric wire is buried in the supporting column and connected with the evaporation boat. According to the local vacuum coating equipment, the inner wall of the bulb glass shell is partially shielded through the shielding device, then vacuum aluminum evaporation coatingis conducted through the evaporation boat, and gaseous metal aluminum directly forms a film locally on the inner wall of the bulb glass shell, so that chemical solvent corrosion is avoided, and the production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of vaporized aluminum coating, in particular to a partial vacuum coating device for the inner wall of a bulb glass bulb. Background technique [0002] The gas discharge light source emits light in a 360-degree direction, but the general lighting is within 180 degrees, so it is necessary to reflect the light from the other half of the 180-degree direction to the other side. The common implementation method in the prior art is in the bulb glass bulb The inner wall is partially coated to reflect light. At present, in order to achieve partial coating on the inner wall of the bulb glass bulb, the more common process requires two steps. First, the inner surface of the bulb glass bulb is completely attached with a metal film layer by vacuum coating, and then, the surface of the glass bulb is coated with a chemical solvent such as strong acid or alkali. Part of the metal film layer is corroded. Because strong acid...
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IPC IPC(8): C23C14/24C23C14/04C23C14/18
CPCC23C14/24C23C14/04C23C14/18
Inventor 龙文华
Owner 重庆冠昌光电科技有限公司