Discharge tube of electromagnetic induction lamp and electromagnetic induction lamp
A technology of electromagnetic induction lamps and discharge tubes, which is applied in the direction of discharge lamps, discharge tubes, gas-filled discharge tubes, etc., can solve the problems of prominent electromagnetic interference, limited use occasions, high cost, etc., and achieve the improvement of actual light efficiency, large power range, The effect of occlusion reduction
Inactive Publication Date: 2008-01-16
丁志强
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Problems solved by technology
For example: the bulb-shaped electrodeless lamp adopts the built-in electromagnetic coupling method, the coupling frequency is too high, mostly 2.65MHz, the problem of electromagnetic interference is prominent, and the high-frequency circuit is complicated, so the cost is high, and the light efficiency is about 50-70Lm / W
In recent years, a kind of electromagnetic induction lamp has appeared, such as: US patent (US2003011322) describes a closed-loop electromagnetic induction lamp, which adopts an outsourced electromagnetic coupling method. The coupling frequency of this type of electromagnetic induction lamp is mostly 200-300KHz. One method has been significantly improved, and the luminous efficiency is about 70-80Lm / W. However, the diameter of the glass tube used is relatively thick, generally greater than 40mm, which is not very ideal for the utilization of ultraviolet rays concentrated near the centerline of the glass tube, and the luminous efficiency remains to be seen. Further improvement; and the thicker glass tube forms a shield to the light in the lamp, which affects the actual light effect; the outsourced electromagnetic coupling device also affects the appearance; at the same time, there is a problem of high cost
In addition, for these two solutions, due to the shape of the glass bulb, light efficiency, cost and other issues, it is difficult to make the lamp power smaller or larger, so the application occasions are limited
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[0038] See Figure 1 and Figure 2: The discharge tube 1 is made of two spiral seals, and there are two sealed thin glass tubes 2 and 3 on it, one of which is an exhaust pipe, and the other is used for injecting mercury or storing Old state of mercury. The magnetic core 4 is placed in the position shown in the figure. The two helices are distributed at 180°.
[0039] See Fig. 3: Glass tube 11 and glass tube 13 are sealed at the position of weld 12, and there are 4 turns of spirals, with two sealed thin glass tubes 14 and 15 on it, one of which is an exhaust pipe, The other is used for injecting liquid mercury or storing old mercury. The 4 helices are distributed at 90°.
[0040] Referring to Fig. 4: glass tube 21 and glass tube 23 are formed by sealing at the position of weld 22, and there are 10 turns of spirals with two sealed thin glass tubes 24 and 25, one of which is an exhaust pipe, The other is used for injecting liquid mercury or storing old mercury. The 10 helices ...
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The invention discloses a discharge tube of an electromagnetic induction lamp and the electromagnetic induction lamp and belongs to the gas discharge lamp field. The discharge tube includes a glass shell, fluorescent powder on the internal surface, and a rare gas injected after the vacuuming, and mercury in a state retained in the glass shell. The glass shell is made of thin glass tube bent into two or more than two spirals. When the discharge tube is working, the electric field in each spiral is piling up, so the coupling frequency can be lowered to solve the problem of electromagnetic disturbance. The circuit is simple, and cost is low. The thin glass tube can make the full utilization of ultraviolet near the central line of the thin glass. Meanwhile, spirals can generate high light effect. Lamps made of the discharge tube have the advantages of high light effect, low cost, big power scope, and wide application.
Description
technical field [0001] The invention belongs to the field of gas discharge lamps, in particular to a discharge tube of an electromagnetic induction lamp and an electromagnetic induction lamp. Background technique [0002] The existing electrodeless lamp or electromagnetic induction lamp has the obvious advantages of long life, instant start and unlimited switching times, but there are also some shortcomings. For example: the bulb-shaped electrodeless lamp adopts the built-in electromagnetic coupling method, the coupling frequency is too high, mostly 2.65MHz, the problem of electromagnetic interference is prominent, and the high-frequency circuit is complicated, so the cost is high, and the light efficiency is about 50-70Lm / W. In recent years, a kind of electromagnetic induction lamp has appeared, such as: US patent (US2003011322) describes a closed-loop electromagnetic induction lamp, which adopts an outsourced electromagnetic coupling method. The coupling frequency of this ...
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IPC IPC(8): H01J11/02H01J65/04
Inventor 丁志强郝晓生祁光辉陶士勇
Owner 丁志强