A kind of electrodeless lamp
Technical field
The utility model relates to a kind of lamp, particularly a kind of electrodeless lamp.
Background technology
Electrodeless lamp is that a kind of element sulphur that utilizes excites the new type light source that forms the electrodless discharge of microwave plasma down at microwave energy, have the outstanding advantage of high light efficiency and high-color rendering, so application prospect is extensive.But the most Circuits System of electrodeless lamp in the market gathers together, and when a certain module breaks down, can not well detect and keep in repair, comparatively inconvenience when therefore using.
The disclosed a kind of HF lamp without electrodes of China Patent No. CN200420038825.4.It is made up of bulb, lamp socket, high-frequency pole-free lamp power circuit and coupling electrode; coupling electrode places in the cambered inwards cavity of light bulb base; coupling electrode and high-frequency pole-free lamp power circuit join; the high-frequency pole-free lamp power circuit places in the lamp socket; the high-frequency pole-free lamp power circuit is made of circuit of power factor correction and high-frequency oscillating circuits, and characteristics are that an automatic protection circuit is set in the high-frequency pole-free lamp power circuit.Provide rising, stable voltage by circuit of power factor correction, form high-frequency oscillation signal by high-frequency oscillating circuits and produce magnetic field, excite gas ionization, luminous in the bulb through coupling electrode.When running into because of abnormal conditions such as bulb fragmentation, gas leakage, load short circuits, automatic protection circuit makes the high-frequency oscillating circuits failure of oscillations, and power circuit is in the low-power consumption guard mode automatically.This electrodeless lamp, structure are comparatively complicated, when using and safeguard, are difficult to the failure judgement nidus, make troubles for production and maintenance.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of simple and reasonable, cost of manufacture is low, the tube-in-tube heat exchanger of flexible operation, long service life, to overcome weak point of the prior art.
The purpose of this utility model aim to provide a kind of simple and reasonable, detect accurately, the electrodeless lamp of easy maintenance, to overcome weak point of the prior art.
A kind of electrodeless lamp by this purpose design; comprise high-tension transformer T1, T2; boost capacitor C1, C2; filament transformer T3 and bridge rectifier D11-D14; boost capacitor links to each other with rectification circuit; it is characterized in that being provided with between described high-tension transformer and the boost capacitor voltage protection F1, F2, filament transformer and rectification circuit one end are provided with system detecting device.
Described voltage protection comprises resistance F1, F2, and its input is connected with the secondary of high-tension transformer T1, T2 respectively, and output is in series with boost capacitor C1, C2 respectively.
Described system detecting device comprises magnetron and detection terminal K1, K2, K3, and K1 connects with the grounding pin of rectification circuit, and K2 and K3 connect with the secondary of filament transformer T3 respectively.
The former limit of described high-tension transformer T1, T2 links to each other with the live wire end L and the zero line side N of civil power respectively, its secondary one end ground connection, and the other end is connected with voltage protection.
Described rectification circuit comprises diode D11, D12, D13 and D14, and 1, No. 3 pins are in series with boost capacitor C1, C2 respectively, its No. 4 pin ground connection, and its No. 2 pins are connected with the secondary of filament transformer T3.
The utility model is simple and reasonable, because the power circuit modularization is split, therefore when fault, the out of order modular circuit of detection that the system detecting device energy is more or less freely, keep in repair again, improved operating efficiency, prolonged the useful life of electrodeless lamp; And owing to be provided with voltage protection, when running into abnormal conditions such as load short circuits, bulb fragmentation, voltage protection can breaking circuit, protective circuit and other modular devices.
Description of drawings
Fig. 1 is a power circuit schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Referring to Fig. 1, a kind of electrodeless lamp comprises high-tension transformer T1, T2, boost capacitor C1, C2, filament transformer T3 and bridge rectifier D11-D14.Be provided with voltage protection F1, F2 between high-tension transformer and the boost capacitor.Voltage protection comprises resistance F1, F2, and its input is connected with the secondary of high-tension transformer T1, T2 respectively, and output is in series with boost capacitor C1, C2 respectively.The former limit of high-tension transformer T1, T2 links to each other with the live wire end L and the zero line side N of civil power respectively, its secondary one end ground connection, and the other end is connected with voltage protection.
Rectification circuit comprises diode D11, D12, D13 and D14, and 1, No. 3 pins are in series with boost capacitor C1, C2 respectively, its No. 4 pin ground connection, and its No. 2 pins are connected with the secondary of filament transformer T3.Filament transformer and rectification circuit one end are provided with system detecting device, comprise magnetron 10 and detection terminal K1, K2, K3, and K1 connects with No. 4 pins of rectification circuit, and K2 and K3 connect with the secondary of filament transformer T3 respectively.The former limit of filament transformer T3 links to each other with the live wire end L and the zero line side N of civil power respectively, and its secondary is connected with K2, K3.