KR20040062011A - Motor shaft connecting structure of electrodeless lighting system - Google Patents

Abstract

PURPOSE: A motor shaft connection structure is provided to prevent movement of a bulb rotating shaft during rotation, by maintaining a coaxial relation between the motor shaft and bulb rotating shaft even after assembly. CONSTITUTION: A motor shaft(8a) of a bulb rotating motor and a bulb rotating shaft(5) are connected with each other so as to rotate the bulb coupled to the top of the bulb rotating shaft. The bulb rotating shaft has an end where a D-shaped coupling groove(101) is formed into a predetermined depth. The motor shaft of the bulb rotating shaft has an end with a D-shaped cross section(102) in such a manner that the motor shaft is slide coupled to the D-shaped coupling groove. A protrusion(101a) is formed along the inner surface of the D-shaped coupling groove of the bulb rotating shaft. The D-shaped cross section of the end of the motor shaft of the bulb rotating motor has a stopper groove(102a) for catching or releasing the protrusion.

Description

MOTOR SHAFT CONNECTING STRUCTURE OF ELECTRODELESS LIGHTING SYSTEM}

The present invention relates to an electrodeless lighting device, and more particularly, the connection of the motor shaft of the bulb rotating motor for the electrodeless lighting device to prevent the shaking occurs when the bulb is rotated exactly so that the bulb shaft and the motor shaft of the motor is coaxial. It's about structure.

ELCTRODELESS LIGHTING SYSTEM transmits electromagnetic energy generated from microwave generator to waveguide through waveguide, which is applied to the electrodeless bulb installed inside the resonator so that the bulb emits visible or ultraviolet light. In comparison with a generally used incandescent lamp and a fluorescent lamp, it has a long life and has excellent light effect.

1 is a perspective view showing the structure of a conventional electrodeless lighting device, Figure 2 is a longitudinal sectional view of Figure 1, Figure 3 is an exploded perspective view showing a conventional motor shaft connection structure.

As shown, the conventional electrodeless lighting device is fixed to a high voltage generator (HIGH VOLTAGE GENERATING UNIT) (2) for boosting the commercial AC power to a high pressure on one side of the case (CASE) 1, the other side thereof A magnetron 3 for generating electromagnetic waves with a high voltage generated by the high voltage generator 2 is fixed.

In addition, a waveguide (WAVE GUIDE) 4 for guiding the electromagnetic wave MICROWAVE generated from the magnetron 3 is provided at the inner upper center of the case 1 between the magnetron 3 and the high voltage generator 2. The upper end is fixed to the opening 1a formed in the case 1.

In addition, the bulb hole shaft (5) is rotatably coupled to the shaft hole (4a) formed in the vertical direction in the center of the waveguide (4), the upper outer through the opening (1a) formed in the case (1) as such A circular bulb BULB 6 in which a substance emitting light by electromagnetic wave energy is enclosed is fixed to an upper end protruding to the upper end, and screwed to a motor shaft 8a of the electric bulb rotating motor 8.

The upper end of the waveguide 4 located outside the case 1 blocks the leakage of electromagnetic waves flowing through the waveguide 4 and allows the light emitted from the light bulb 6 to pass. (RESONATOR) (9) is coupled to surround the bulb 6, the periphery of the coupled resonator (9) so as to reflect the light generated in the bulb (6) and passed through the resonator (9) (9) A semicircular reflector (REFLECTOR) 10, which is installed to surround it, is fixed.

In addition, a fan motor 11, a cooling fan 12, and a cooling outlet 13a may be disposed at an inner lower side of the case 1 to cool the magnetron 3 and the high voltage generator 2. The cooling device 14 which consists of the fan housing 13 with which the fan was formed is provided.

In addition, the fan housing 13 is formed with a suction port 13b for suctioning external air by the rotation of the cooling fan 12, and the upper surface edge of the case 1 is sucked through the suction port 13b. Several outlets 1b are formed so that the compressed air can be discharged to the outside via the high voltage generator 2 and the magnetron 3.

Operation of a conventional electrodeless lighting device configured as described above is performed as follows.

First, when power is applied, a high voltage is generated in the high voltage generator 2, and the high voltage generated as described above is supplied from the magnetron 3, and the magnetron 3 generates electromagnetic waves by the high voltage applied thereto.

The electromagnetic wave generated as described above is radiated into the resonator 9 through the waveguide 4, and discharges a material encapsulated in the light bulb 6 by the emitted electromagnetic wave to generate light by plasma. The light generated as is reflected by the reflector 10 and is illuminated forward.

When the light is generated from the light bulb 6 as described above, the light bulb rotation motor 8 rotates at a constant speed and rotates the light bulb rotation shaft 5 connected by a screw to fix the light bulb 6 fixed to the end of the rotation shaft 5. By rotating), the bulb 6 is cooled so as not to be heated above a predetermined temperature.

In addition, the fan motor 11 installed in the inner lower part of the case 1 also rotates to rotate the cooling fan 12, and the external air sucked through the suction port 13b by the rotation of the cooling fan 12 After flowing through the discharge port 13a and cooling the high voltage generator 2 and the magnetron 3, they are discharged to the outside of the case 1 through the discharge port 1b formed on the upper surface of the case 1.

However, in the conventional electrodeless lighting device configured as described above, since the motor shaft and the bulb rotating shaft of the bulb rotating motor are screwed together, it is difficult to accurately maintain the coaxial between the motor shaft and the bulb rotating shaft after screwing, As a result, the bulb rotation shaft rotates during assembly and assembly, which causes severe shaking, thereby lowering the stability of the device.

The object of the present invention devised in view of the above problems is to maintain the correct coaxial even after the motor shaft and bulb rotation shaft of the bulb rotation motor is coupled to the bulb rotation motor for the electrodeless lighting equipment suitable for preventing the shaking when the bulb rotation shaft rotation To provide a motor shaft connection structure of.

1 is a perspective view showing the structure of a conventional electrodeless lighting device.

2 is a longitudinal cross-sectional view of FIG.

Figure 3 is an exploded perspective view showing a conventional motor shaft connection structure.

Figure 4 is a longitudinal sectional view of the electrodeless lighting device having a motor shaft connection structure according to the present invention.

5 is an exploded cross-sectional view of FIG.

Figure 6 is a cross-sectional view and bottom view showing the bulb rotation axis of the present invention in detail.

7 is a perspective view showing a motor shaft of the present invention.

Explanation of symbols on the main parts of the drawings

5: light bulb rotating shaft 6: light bulb

8: Bulb rotation motor 8a: Motor shaft

101: "D" shaped coupling hole 101a: engaging projection

102: "D" shaped cross section 102a: locking groove

In order to achieve the object of the present invention as described above

In the electrodeless lighting device, which is connected to the motor shaft and the bulb rotation shaft of the bulb rotation motor to rotate the bulb coupled to the upper end of the bulb rotation shaft at a constant speed,

The lower end of the bulb rotation shaft is formed with a certain depth of the "D" shaped coupling hole, the inner side of the coupling hole is formed with a coupling protrusion protruding along the inner peripheral surface, the motor shaft end of the bulb rotation motor is the coupling hole Provided is a motor shaft connection structure of an electric bulb rotating motor for an electrodeless lighting device having a " D " shaped cross section to be slidably coupled thereto.

Hereinafter, with reference to the embodiment of the accompanying drawings the motor shaft connection structure of the electric bulb rotating motor for an electrodeless lighting device of the present invention configured as described above in more detail as follows.

4 is a longitudinal cross-sectional view of the electrodeless lighting device having a motor shaft connection structure according to the present invention, Figure 5 is an exploded cross-sectional view of Figure 4, the basic structure is the same as the conventional.

That is, a high voltage generator 2 for boosting the commercial AC power to a high voltage inside the box 1 made of a box body, a magnetron 3 for generating electromagnetic waves at a high voltage generated by the high voltage generator 2, and A waveguide 4 for guiding the electromagnetic waves generated by the magnetron 3 is provided.

In addition, the bulb hole shaft 5 is rotatably coupled to the shaft hole 4a formed in the vertical direction in the center of the waveguide 4, and protrudes outward through the opening 1a formed in the case 1. The upper end of the bulb rotation shaft 5 is fixed to a circular bulb 6 in which a substance emitting light emitted by electromagnetic energy is fixed, and the lower end is coupled to the motor shaft 8a of the bulb rotation motor 8.

In addition, the upper end of the waveguide (4) located outside the case (1) is a resonator made of a metal mesh to block the leakage of electromagnetic waves flowing through the waveguide 4 and let the light emitted from the light bulb (6) to pass through (9) is coupled to surround the light bulb (6), and around the resonator (9) is provided a reflector (10) for reflecting light generated by the light bulb (6) and passing through the resonator (9). .

In addition, a fan motor 11, a cooling fan 12, and a discharge port 13a are formed on the inner lower side of the case 1 to cool the magnetron 3 and the high voltage generator 2. The configured cooling device 14 is installed, and the fan housing 13 is formed with a suction port 13b for sucking external air by the rotation of the cooling fan 12, and the upper edge of the case 1 Several outlets 1b are formed in the air so that the air sucked through the inlet 13b can be discharged to the outside through the high voltage generator 2 and the magnetron 3.

Here, the present invention, as shown in Figure 6 and 7, the lower end of the bulb rotation shaft (5) "D" shaped coupling hole 101 is formed at a predetermined depth, the "D" shaped coupling hole The inner side of the 101 is formed with a locking projection 101a along the inner circumferential surface, the end of the motor shaft (8a) is sliding in the "D" shaped coupling hole 101 formed in the lower end of the bulb rotation shaft (5) The "D" shaped cross section 102 is formed to be coupled in such a way, and the "D" shaped cross section 102 is inserted with the engaging protrusion 101a formed in the "D" shaped engaging hole 101. A locking groove 102a is formed along the outer circumferential surface so as to be possible.

The electrodeless lighting device having the motor shaft connection structure of the electric bulb rotating motor of the present invention configured as described above is supplied with power to generate a high voltage in the high voltage generator 2, and the high voltage generated as described above is supplied from the magnetron 3. In the magnetron 3, electromagnetic waves are generated by the high voltage applied.

The electromagnetic wave generated as described above is radiated into the resonator 9 through the waveguide 4, and discharges a material encapsulated in the light bulb 6 by the emitted electromagnetic wave to generate light by plasma. The light generated as is reflected by the reflector 10 and is illuminated forward.

When the light is generated from the bulb 6 as described above, the bulb rotation motor 8 rotates at a constant speed and rotates the bulb rotation shaft 5 coupled to the motor shaft 8a to the end of the bulb rotation shaft 5. By rotating the fixed bulb 6, the deterioration of the bulb 6 is prevented.

In addition, the " D " shaped cross section 102 formed at the end of the motor shaft 8a of the bulb rotating motor 8 is coupled to the " D " shaped coupling hole 101 formed in the bulb rotating shaft 5 in a sliding manner. Therefore, the coupling of the motor shaft (8a) and the bulb rotation shaft (5) after the coupling is coupled in a straight line without the shaking of the bulb rotation shaft (5) during operation.

In addition, the bulb rotation shaft 5 is coupled as described above, the engaging projection 101a formed in the "D" -shaped coupling hole 101 when the motor shaft 8a is coupled, the motor shaft 8a is the "D" of the end Since it becomes a locking state to be inserted into the locking groove 102a formed in the male cross-section 102, the disassembly in the axial direction during the operation is prevented.

As described in detail above, the motor shaft connection structure of the electric bulb rotating motor for the electrodeless lighting device of the present invention forms a "D" shaped coupling hole of a predetermined depth at the lower end of the electric bulb rotating shaft, and the " Formed "D" shaped cross section to be coupled to D "shaped coupling hole, when joining motor shaft and bulb rotation shaft," D "shaped cross section formed on motor shaft is sliding type to" D "shaped coupling hole formed on bulb rotation shaft It is simply combined by being inserted into.

In addition, since the bulb shaft and the motor shaft of the bulb rotation motor is coupled to the sliding type as described above, the coaxial between the bulb rotation shaft and the motor shaft is precisely maintained, there is an effect that the shaking of the bulb rotation shaft does not occur during operation.

Claims (2)

In the electrodeless lighting device, which is connected to the motor shaft and the bulb rotation shaft of the bulb rotation motor to rotate the bulb coupled to the upper end of the bulb rotation shaft at a constant speed, The lower end of the bulb rotation shaft is formed with a certain depth of the "D" shaped coupling hole, the motor shaft end of the bulb rotation motor is formed of a "D" shaped cross section so that the coupling can be slidably coupled to the coupling hole. Motor shaft connection structure of electric bulb rotating motor for electrode lighting equipment. The method of claim 1, A locking protrusion protrudes along an inner circumferential surface of the bulb-shaped rotating shaft inside the “D” -shaped coupling hole, and an outer circumferential surface of the “D” -shaped cross-section formed on an end of the motor shaft of the bulb-rotating motor along the outer circumferential surface thereof to allow insertion of the locking protrusion. The motor shaft connection structure of the bulb rotation motor for electrodeless lighting equipment, characterized in that the groove is formed.