KR20050111275A - Motor shaft connecting structure of electrodeless lighting system - Google Patents

Abstract

The motor shaft connection structure of the electrodeless lighting device of the present invention is connected to the motor shaft of the bulb rotating motor for rotating the bulb and the bulb shaft of the bulb by a connecting tube, and the upper end of the motor shaft is inserted into the lower end of the connecting tube. In the motor shaft connection structure of the electrodeless illuminator where the female screw forming portion for screwing the male screw forming portion formed at the end of the motor shaft inserting portion and the motor shaft inserting portion is connected in communication with each other, A support groove is formed to be recessed to a predetermined depth along an edge of the connection pipe, and a support protrusion is inserted into the support groove to support the upper end of the motor shaft, so that an upper surface of the motor shaft and an inner surface of the connection pipe are formed. By making the contact area increase, it is possible to stably rotate without causing shaking during rotation of the bulb.

Description

MOTOR SHAFT CONNECTING STRUCTURE OF ELECTRODELESS LIGHTING SYSTEM}

The present invention relates to an electrodeless lighting device, and more particularly, to a motor shaft connecting structure of the electrodeless lighting device that the motor shaft and the connecting tube is stably assembled so that the bulb can be stably rotated without shaking.

ELECTRODELESS LIGHTING SYSTEM is an luminaire that transmits electromagnetic energy generated from magnetron to the resonator through waveguide, which is applied to the electrodeless bulb installed inside the resonator, and the bulb emits visible or ultraviolet rays. Compared with incandescent lamps and fluorescent lamps which are generally used, they have a long lifespan and excellent lighting effects.

In addition, the light-emitting bulb as described above is to be rotated at a constant speed during light emission to prevent local heating of the light bulb, the structure in which the motor shaft is connected so that the bulb can rotate is 1, 2 3, which is briefly described as follows.

1 is a longitudinal cross-sectional view showing an exploded motor shaft connection structure of a conventional electrodeless lighting device, Figure 2 is a longitudinal cross-sectional view of the coupled state of Figure 1, Figure 3 is a perspective view showing the end of the conventional motor shaft, As described above, the motor shaft 1 and the bulb shaft 3 of the bulb are connected by the connecting pipe 4.

At the end of the motor shaft 1, a male thread forming portion 5 having a male thread portion 5a formed on an outer circumferential surface thereof is formed to protrude, and the male thread forming portion 5 is a female screw formed inside the central portion of the connecting pipe 4. It is screwed together to the formation part 4a.

In addition, the diameter (D) of the male screw forming portion 2 is formed smaller than the diameter (D ') of the motor shaft (1), the diameter of the female screw forming portion (4a) in the lower side of the connecting pipe (4) The diameter L 'is larger than the diameter L', and the motor shaft inserting portion 6 is formed so as to communicate with the female thread forming portion 4a, and the bulb shaft inserting portion 7 into which the bulb shaft 3 is inserted and fixed also on the imaginary side. ) Is formed.

In addition, on the outer peripheral surface of the upper end of the motor shaft 1, a chamfer 8 is formed along the corner portion, so that the motor shaft 1 is coupled to the connecting pipe 4 without being caught by burrs or the like. It can be easily assembled.

  By the way, in the conventional electrodeless lighting device to which the motor shaft (1) is connected as described above, the chamfer (8) to be easily assembled when the motor shaft (1) is screwed to the connecting pipe (4). There is a problem that the upper surface (1a) of the formed motor shaft (1) is unable to maintain a sufficient contact area due to the formation of the chamfer (8) is not supported stably after joining, the shaking occurs during the rotation of the bulb.

An object of the present invention devised in view of the above problems is to provide a motor shaft connection structure of the electrodeless lighting device suitable for the motor shaft is stably assembled to the connecting tube to prevent the occurrence of shaking during the rotation of the bulb.

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

The motor shaft of the bulb rotating motor for rotating the bulb and the bulb shaft of the bulb are connected by a connecting tube, and inside the lower end of the connecting tube, a motor shaft insertion part into which the upper end of the motor shaft is inserted and a male screw formed at the end of the motor shaft are formed. In the motor shaft connection structure of the electrodeless lighting device, the female screw forming portion to be additionally screwed is formed in communication, the upper end inside the bulb shaft inserting portion is formed, the bulb shaft is inserted,

A support groove is formed to be recessed inside the motor shaft insertion portion,

The motor shaft connection of the electrodeless lighting device, characterized in that the upper end of the motor shaft is formed by forming a support protrusion to protrude so that the motor shaft is inserted into the support groove when the motor shaft is coupled to the motor shaft insertion portion to be supported by a wide contact area. A structure is provided.

Hereinafter, the motor shaft connection structure of the electrodeless lighting device of the present invention configured as described above will be described in more detail with reference to embodiments of the accompanying drawings.

As shown, the electrodeless lighting device provided with the present invention has a high voltage generator (HIGH VOLTAGE GENERATING UNIT) 102 is installed on one side of the case (CASE) (101) for boosting the commercial AC power to high pressure On the other side, there is provided a magnetron 103 for generating electromagnetic waves at a high voltage generated by the high voltage generator 102.

In addition, a waveguide (WAVE GUIDE) 104 for guiding the electromagnetic wave MICROWAVE generated from the magnetron 103 is provided at the inner upper center of the case 101 between the magnetron 103 and the high voltage generator 102. The upper end is fixed to the opening 101a formed in the case 101.

In addition, the shaft hole formed in the vertical direction in the center of the waveguide 104, the bulb shaft 105 is rotatably coupled, the electromagnetic wave is projected to the upper end through the opening formed in the case 101 as described above A spherical bulb (BULB) 106 in which a light emitting material emitting energy is encapsulated is fixed, and at a lower end thereof, a connector tube is cooled to cool the bulb 106 by rotating the bulb shaft 105. The electric bulb rotation motor 109 to which the motor shaft 108 is connected by 107 is coupled.

A female thread forming portion 107a is formed inside the central portion of the connecting pipe 107, and an bulb shaft inserting portion 107b is formed in communication with an upper side thereof, and an upper end portion of the motor shaft 108 is inserted below. The motor shaft insertion part 107c is formed in communication.

The upper end of the motor shaft 108 is formed to protrude a male thread forming portion 108a which is screwed to the female thread forming portion 107a of the connecting pipe 107.

In addition, a support groove portion 107c 'is formed inside the motor shaft insertion portion 107c to be recessed to a predetermined depth along the edge, and protrudes along the edge at the upper end of the motor shaft 108. A support protrusion 108b is inserted into the support groove 107c 'and is supported.

That is, the support protrusion 108b formed to protrude as described above is inserted into the support groove 107c 'so that the contact area is broadly supported.

In the figure, reference numeral 110 is a resonator, 111 is a reflector, 112 is a cooling fan, and 113 is a cooling motor.

Operation of the electrodeless lighting device having a motor shaft connection structure of the present invention configured as described above is made as follows.

When power is applied, the high voltage generator 102 generates a high voltage, and the high voltage generated as described above is supplied to the magnetron 103, and the magnetron 103 generates electromagnetic waves by the high voltage applied thereto. The generated electromagnetic waves are radiated into the resonator 110 through the waveguide 104, and discharge the light emitting material encapsulated in the bulb 106 by the radiated electromagnetic waves to generate light by the plasma. The light is reflected by the reflector 111 and is reflected forward.

When the light is generated from the bulb 106 as described above, the bulb rotation motor 109 rotates at a constant speed and rotates the connection pipe 107 and the bulb shaft 105 connected to the motor shaft 108 to rotate the bulb shaft ( By rotating the bulb 106 fixed to the end of 5), the bulb 106 is cooled so as not to be heated above a predetermined temperature, and the bulb 106 rotated as described above is the upper end of the motor shaft 108. The support protrusion 108b formed in the support groove 107c 'formed in the connection pipe 107 is inserted into the contact area is increased and rotated in a stable coupled state does not cause shaking.

In detail, the support protrusion 108b formed at the upper end of the motor shaft 108 when the motor shaft 108 is screwed to the connecting pipe 107 is inserted into the motor shaft inserting portion of the connecting pipe 107. 107c is inserted into and supported in the support groove 107c 'formed inside, so that the contact area between the upper surface of the motor shaft 108 and the inner surface of the motor shaft insertion portion 107c of the connecting pipe 107 is increased. It is assembled so that shaking does not occur when the bulb 106 is rotated.

As described in detail above, the motor shaft connecting structure of the electrodeless lighting device of the present invention forms a supporting groove portion to be recessed to a predetermined depth along the edge of the inner tube, and is inserted into the supporting groove portion at the upper end of the motor shaft. By forming a supporting protrusion, the upper surface of the motor shaft and the inner surface of the connecting tube is in a state in which the contact area is increased, thereby having an effect of stably rotating without causing shaking when the bulb is rotated.

1 is a longitudinal cross-sectional view showing a disassembled motor shaft connection structure of a conventional electrodeless lighting device.

2 is a longitudinal cross-sectional view of the coupled state of FIG.

Figure 3 is a perspective view showing the end of the conventional motor shaft.

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

5 is an exploded cross-sectional view of the motor shaft connection portion in the present invention.

6 is a cross-sectional view of the assembled state of FIG.

FIG. 7 is a cross-sectional view taken along the line AA ′ of FIG. 6;

Explanation of symbols on the main parts of the drawings

105: bulb shaft 106: bulb

107: connector 107a: female thread forming portion

107b: Bulb shaft insert 107c: Motor shaft insert

107c ': support groove 108: motor shaft

108a: male thread forming portion 108b: support protrusion

109: bulb rotation motor

Claims (2)

The motor shaft of the bulb rotating motor for rotating the bulb and the bulb shaft of the bulb are connected by a connecting tube, and inside the lower end of the connecting tube, a motor shaft insertion part into which the upper end of the motor shaft is inserted and a male screw formed at the end of the motor shaft are formed. In the motor shaft connection structure of the electrodeless lighting device, the female screw forming portion to be additionally screwed is formed in communication, the upper end inside the bulb shaft inserting portion is formed, the bulb shaft is inserted, A support groove is formed to be recessed inside the motor shaft insertion portion, The motor shaft connection of the electrodeless lighting device, characterized in that the upper end of the motor shaft is formed by forming a support protrusion to protrude so that the motor shaft is inserted into the support groove when the motor shaft is coupled to the motor shaft insertion portion to be supported by a wide contact area. rescue. The method of claim 1, The support groove portion is formed along the edge inside the motor shaft insertion portion, the support protrusion is a motor shaft connecting structure of the electrodeless lighting device, characterized in that formed along the upper edge of the motor shaft.