KR102338760B1 - Beacon with a function for preventing deterioration by sunlight - Google Patents

Abstract

The present invention relates to a lamp with a function for preventing deterioration by sunlight. According to an embodiment of the present invention, disclosed is a lamp with a function for preventing deterioration by sunlight, which is a rotary lamp in which an upper lamp body is installed on an upper part of the lower lamp body and the upper lamp body is rotated by a motor drive, and is confined to provide a motor rotation control mode in which the motor rotates in a state in which a light source does not emit light during the daytime in order to prevent deterioration of internal components due to condensing of sunlight.

Description

A lamp having a function of preventing deterioration by sunlight {Beacon with a function for preventing deterioration by sunlight}

The present invention relates to a lamp having a function of preventing deterioration by sunlight, wherein an upper lamp is installed on the upper part of the lower lamp and the upper lamp is rotated by a motor drive. Internal parts by collecting sunlight It relates to a lamp having a function of preventing deterioration by sunlight, configured to provide a motor rotation control mode in which the motor rotates in a state in which the light source unit does not emit light during the daytime to prevent deterioration of the light source.

A light device is a lighting device installed on a route sign to indicate a maritime route. It is a flashing light with a method of fixing the optical system and flickering the light source, and a rotary light with the light source continuously turned on and rotating the optical system lens or upper light body. are separated

When referring to the standard type of light, the flashing light is applied to small (250mm (lens diameter)) to medium (300mm), and rotary lights are from medium (300mm, 400mm) to large. (750mm) is applied.

Referring to the Standard Specification for Maritime Lighting Machines (Ministry of Maritime Affairs and Fisheries Notice No. 2018-620), the 750mm rotary light machine consists of an upper back body, a lower back body, and a light machine control panel.

7 is a schematic diagram of a 750mm rotary lantern according to an example of the related art. With reference to FIG. 7 , the upper and lower isomers will be described in more detail.

The upper body (UB) has four lens panels (2,4) arranged at a radial angle of 90 degrees, a lens protector (8) that fixes and supports the lens panels (2,4), and the inside of the lens panels (2,4) It includes a light bulb (6) for marine use installed in the, and a light bulb changer (1) coupled to the central axis of the rotating device (5) in the center of the lens panel (2, 4). For the material of the lens protector 8, a duralumin alloy material that is strong against sea wind and has corrosion resistance is used.

Two light bulbs are installed in the light bulb changer (1), and when the main light is turned off, it is detected by a short circuit detection circuit, and the light fixture control device automatically drives a small DC motor (not shown) mounted on the light bulb changer (1) as a spare light bulb. switch within seconds.

The lens panels 2 and 4 on one side are composed of a central lens 4 and a prism lens 2 arranged around it, and the central lens 4 is composed of a Fresnel lens, and the replacement of the light bulb 6 is performed. It is configured so that it can be opened and closed for easy operation. For the lens panels 2 and 4, a glass material having excellent optical properties is used.

The upper back body UB is assembled and installed on the rotating plate 3 fixedly attached to the lower back body DB.

The lower back body DB is composed of a lower base 9 fixed to the ground, a support 7 extending upward from the lower base 9, and a rotating device 5 installed on the upper part of the support 7, and the upper back body (UB) is supported and rotated.

The rotating device 5 is composed of a winding, a stator, and a rotor M, and is configured to rotate an external cylindrical rotor M around a fixed axis. The rotating device (5) has a hole in the central shaft so that the signal line (check the main and spare light bulbs) and the power line from the upper bulb changer 1 pass through the rotating shaft so that the wiring is not twisted even when the upper part rotates. do. The rotating device 5 is provided with a bearing (not shown) so as to smoothly rotate because it supports the load of the upper back body (UB).

On the other hand, by further improving the general rotary lamp illustrated in FIG. 7, the present applicant has filed a Korean patent registration 10-2071279 (registered on January 22, 2020) in a large rotary lamp that is rotated by a motor drive. In the event of an accident, a beacon configured to facilitate replacement or repair of the motor has been proposed.

However, in the case of a rotary lamp, the light source does not emit light and the motor does not operate during the daytime period when the lamp function is not required. When the position coincides with or is close to, the concentration of sunlight occurs through the lens panel (especially the central lens) and the deterioration of the internal components (LED, circuit board, sensor connection line, etc.) that received the collected sunlight occurs. there was.

Republic of Korea Patent Registration 10-2071279 (Registered on January 22, 2020) Republic of Korea Patent Registration 10-1733688 (registered on April 28, 2017)

The present invention has been devised in view of the above problems in the prior art, and in a rotary lamp in which an upper back body is installed on the upper part of the lower back body and the upper back body is rotated by a motor driving, the deterioration of internal parts due to the condensing of sunlight is prevented. An object of the present invention is to provide a lamp having a function of preventing deterioration by sunlight, which is configured to provide a motor rotation control mode in which the motor rotates in a state in which the light source unit does not emit light during the daytime to prevent the light from emitting light.

According to one aspect of the present invention for solving the above technical problem, a plurality of lens panels installed symmetrically about a rotation axis and arranged to radiate light from a light source installed therein, and the plurality of lens panels an upper body including a lens protector for fixing and supporting; A lower part comprising a support extending upward from the ground side, a motor installed on the upper part of the support, and a rotating plate supporting the upper back body coupled to the upper side and transmitting the rotational driving force of the motor located at the lower side to the upper body to rotate it isomer; and a control unit for controlling the operation of the light source unit and the motor, wherein the control unit includes a first motor rotation control mode in which the motor rotates in a state in which the light source unit emits light in order to provide a lamp function in the night time period; Disclosed is a lamp having a function of preventing deterioration due to sunlight, characterized in that it has a second motor rotation control mode in which the motor rotates in a state in which the light source unit does not emit light in order to provide a function of preventing solar light collection during the time period. .

Preferably, the motor has a preset rotation origin position, and the control unit controls the change of the rotation position of the motor based on the rotation origin position in the second motor rotation control mode.

Preferably, the change of the rotational position of the motor is controlled so that the position at which the sun moves for each time period is located between the centers of the plurality of lens panels.

Preferably, the second motor rotation control mode further includes a stop mode for stopping the rotation of the motor according to a date condition or a time zone condition.

Preferably, the motor rotation speed of the second motor rotation control mode is configured to have a lower rotation speed than the motor rotation speed of the first motor rotation control mode.

As described above, the present invention provides a motor rotation control mode in which the motor rotates in a state in which the light source does not emit light during the daytime in a rotary lamp in which the upper back body is rotated by driving a motor. provides the advantage of preventing

1 is a schematic diagram in the front direction of a light machine according to an embodiment of the present invention;
2 is a perspective view schematic diagram of a light machine according to an embodiment of the present invention;
3 is an exploded perspective view of a light machine according to an embodiment of the present invention;
4 is a connection configuration diagram of a control unit of a light machine according to an embodiment of the present invention;
5 is a schematic diagram for explaining a second motor rotation control mode of the light machine according to an embodiment of the present invention;
6 is another schematic diagram for explaining the second motor rotation control mode of the light machine according to an embodiment of the present invention;
7 is a schematic diagram of a 750mm rotary lantern according to an example of the prior art.

The present invention may be embodied in various other forms without departing from its technical spirit or main characteristics. Accordingly, the embodiments of the present invention are merely illustrative in all respects and should not be construed as limiting.

The terms 1st, 2nd, etc. are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but another component may exist in between.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprises" or "comprising", "have" and the like are intended to represent the presence of elements or combinations thereof described in the specification, and the possibility that other elements or features may be present or added. It is not precluded.

In the following description, the mechanical configuration of the rotary lamp will be described with reference to the configuration of Korean Patent Registration No. 10-2071279 (registered on January 22, 2020) proposed by the present applicant for convenience of explanation, but the configuration of the present invention is shown in FIG. It is applicable to the motor-driven type of marine rotary lights included in the publicly known standard specifications such as the Marine Lighting Standard Specifications (Ministry of Oceans and Fisheries Announcement No. 2018-620), including the illustrated general rotary lights.

1 is a schematic diagram in the front direction of a light flag according to an embodiment of the present invention, FIG. 2 is a schematic diagram in a perspective direction of a light flag according to an embodiment of the present invention, and FIG. 3 is a light machine according to an embodiment of the present invention An exploded perspective view, Figure 4 is a connection configuration diagram of the control unit of the light fixture according to an embodiment of the present invention.

The light fixture B of this embodiment includes an upper back body UB and a lower back body DB, and a control unit 100 .

The upper body UB includes a lens protector 80 , a plurality of lens panels 40 , a light source unit 60 , and a light source driver 10 .

The lens protector 80 fixes and supports the plurality of lens panels 40 . To this end, the lens protector 80 is installed symmetrically about the axis of rotation (A) and the upper frame 86 through a plurality of vertical frames 82 spaced apart according to a preset rotation angle (eg, 90 degrees). ) and the lower frame 88 have a combined configuration. The upper frame 86 and the lower frame 88 may be a ring-shaped metal plate. The coupling between the vertical frame 82 and the upper frame 86 or the lower frame 88 may be achieved through a coupler 89 having a bent shape.

The plurality of lens panels 40 are installed symmetrically about the rotation axis A, installed through the auxiliary frame 84 provided between the vertical frames 82, and radially from the light source unit 60 installed therein. It is arranged so that light irradiation is possible. Although a circular Fresnel lens is illustrated in the drawings of this embodiment, a plurality of prism lenses may be installed around the Fresnel lens.

The light source unit 60 is installed at the center of the plurality of lens panels 40 and LED modules 64a and 64b are installed at positions corresponding to the respective lens panels 40 . The installation height of any one of the LED modules 64a and 64b (64a, the main LED module) is installed to fit the center of the lens panel 40 in a general use state. The installation height of the other LED module 64b (auxiliary LED module) is installed so that it can be switched to the height of the main LED module 64a by up-and-down driving in the failure state of the main LED module 64a.

The light source driver 10 is coupled to the lower side of the light source unit 60 and controls the raising and lowering of the light source unit 60 . A detailed configuration of the light source driving unit 10 will be described later.

Meanwhile, the lower body DB includes a lower base 90 , supports 70 and 72 , a motor fixing frame 22 , a motor 50 and a rotating plate 30 .

The lower base 90 is fixed to the ground and has a plate shape.

The supports 70 and 72 have a structure extending upward from the lower base 90 and extending upward from the ground side and have a rod shape. The supports 70 and 72 may be formed in multiple stages in consideration of the installation height, and the intermediate plate 92 may be installed in the middle.

The motor 50 is installed on the supports 70 and 72, and for this purpose, the motor fixing frame 22 is horizontally installed on the supports 70 and 72 and has a plate shape.

For example, the motor fixing frame 22 has a through hole 22a formed on the central side, and the brush slip ring 54 is installed upward through the fixing frame 56 on the lower side.

The brush slip ring 54 passes through the through hole 22a and supplies power to the rotor 52 side of the motor 50 installed in the upper center of the motor fixing frame 22 . Through this structure, the rotor 52 of the motor 50 may receive power even during rotation.

The motor 50 is installed in the upper center of the motor fixing frame 22 and transmits the rotational force of the rotor 52 upward. As an example, the motor 50 of this embodiment can control the origin movement to a preset rotation origin position (ZP), and control the change of the rotation position (RP) based on the rotation origin position (ZP), such control It is not limited to a particular type of motor if possible. For example, the motor 50 of this embodiment is provided with a rotary encoder to enable identification of a rotational position and control of origin movement to the rotational origin position (ZP), and a DC motor capable of fine rotational speed control may be used. As another example, as the motor 50 of this embodiment, a servo motor capable of directly controlling the rotation speed and position may be used.

The rotating plate 30 supports the upper back body UB coupled to the upper side, and transmits the rotational driving force of the motor 50 located at the lower side to the upper back body UB to rotate it.

To this end, the rotating plate 30 may be formed in a circular plate shape, coupled to the lower frame 88 from the upper side, supporting the lower surface of the light source driving unit 10, and from the lower side through the intermediate frame 32 It is coupled with the rotor 52 of the motor 50 to transmit the rotational driving force of the motor 50 to the upper body UB. The intermediate frame 32 has an upper connection part 31 having a cylindrical shape with a low height is fixed to the lower surface of the rotating plate 30, and a circular lower plate part integrally formed under the upper connection part 31 (reference numeral not shown). is coupled to the rotor 52 of the motor 50 . The coupling between the intermediate frame 32 and the rotor 52 of the motor 50 may be fastened using, for example, a bolt or a nut.

On the lateral side of the motor 50 on the upper side of the motor fixing frame 22, for the convenience of maintenance, the rotating plate 30 and the upper body UB are upwardly separated, and the motor 50 is mounted on the lower body ( At least two hydraulic jacks 20 may be installed so as to be laterally separated from the DB).

The light source unit 60 includes a vertically extending rectangular rod-shaped body member 66 , installed on the upper side of the body member 66 , and radially extending from each side of the rectangular rod of the body member 66 . a plurality of cooling plates 62 and a plurality of LED modules 64a and 64b installed on the lower side of the body member 66 and installed to radiate light from each side of the square bar of the body member 66 ) is included. The LED modules 64a and 64b constitute a module including an LED chip, a driving substrate, a light reflection plate, and the like.

The LED modules 64a and 64b are installed on each side of the square rod so that the main LED module 64a and the auxiliary LED module 64b have a height difference. For example, the main LED module 64a is used normally, and the auxiliary LED module 64b is used when the main LED module fails.

Through this structure, the LED modules 64a and 64b are installed in one height in four directions (each lens panel direction) by the rising or falling driving of the light source driving unit 10 (the main LED module group). ) and another LED module group (auxiliary LED group module) installed in the same four directions at another height.

For example, if an abnormality is detected from one or more of the LED modules while providing a light source for a lamp with four LED modules (main LED module) on the upper side in normal use, the light source driver 10 is driven to another height 4 LED modules (auxiliary LED modules) of the illuminator can be provided by switching the light source.

The light source driving unit 10 includes a light source unit coupling support 11 and an electric cylinder 18 coupled to the lower side of the light source unit 60 . For example, in normal use, the light source for the light is provided to the four main LED modules 64a on the upper side coupled to the light source unit coupling support 11 by maintaining the lower driving state of the electric cylinder 18, and the light source control unit ( When 100) detects an abnormality from the main LED module, the electric cylinder 18 is driven upward to a preset height. By this driving, the light source unit coupling support 11 and the light source unit 60 are also driven upward, so that the light source for the lamp can be provided by switching to the four auxiliary LED modules 64b installed on the lower side.

The control unit 100 controls the operation of the light source unit 60 , the motor 50 , and the electric cylinder 18 . The control unit 100 of this embodiment may be understood as a general light machine control panel having an MCU, a memory, and an input/output interface, and may be understood as a computing means in which a program related to motor rotation control of the present embodiment is driven.

Referring to FIG. 4 , the control unit 100 controls on/off of the main LED module 64a and the auxiliary LED module 64b, and for this purpose, the control unit 100 controls the main LED module 64a and the auxiliary LEDs. A power supply for supplying power to the module 64b may be controlled.

The control unit 100 controls the driving of the electric cylinder 18 of the light source driving unit 10 , and for this purpose, the control unit 100 may control an electric cylinder controller (not shown). The electric cylinder controller (not shown) receives power from an electric cylinder power supply (not shown).

The control unit 100 controls the driving of the motor 50 , and for this purpose, the control unit 100 may control a motor driver (not shown). As an example, the driving control of the motor 50 may be control of the rotational speed and rotational position, and based on the origin movement control to the preset rotational origin position (ZP) and the rotational origin position (ZP), the rotational position (RP) may include change control of

Figure 5 is a schematic diagram for explaining the second motor rotation control mode of the light machine according to an embodiment of the present invention, Figure 6 is for explaining the second motor rotation control mode of the light machine according to an embodiment of the present invention It is another schematic diagram.

The control unit 100 of this embodiment includes a first motor rotation control mode in which the motor 50 rotates in a state in which the light source unit 60 emits light in order to provide a light fixture function in the night time zone, and sunlight condensing in the day time zone In order to provide a prevention function, the motor 50 has a second motor rotation control mode in which the light source unit 60 does not emit light.

The first motor rotation control mode corresponds to a general rotary lamp control mode, and the second motor rotation control mode is a control mode for preventing deterioration of internal components due to sunlight condensing.

In the second motor rotation control mode, in order to prevent deterioration of internal components due to the condensing of sunlight, the position at which the sun S moves for each time period coincides with or approaches the position of any one of the plurality of lens panels 40 for a long time. A mode designed to avoid situations.

The control unit 100 may set a time period in which control is performed in the first motor rotation control mode and a time period in which control is performed in the second motor rotation control mode based on 24 hours a day.

The first or second motor rotation control mode is provided according to the set mode start time and mode end time, respectively, and the mode start time and mode end time change the sunrise/sunset time and sunrise azimuth by day of the year. Considering that, it may be set differently for each date.

For example, in winter when the sunrise time is late and the sunset time is early, the time at which the first motor rotation control mode starts (eg, the setting time considering the sunset time) is set earlier, and the first motor rotation control mode The end time (eg, the set time considering the sunrise time) can be set later, and vice versa in summer.

In addition, in the summer when the sunrise time is early and the sunset time is late, the time at which the second motor rotation control mode starts (eg, a set time in consideration of the sunrise time) is set faster, and the second motor rotation control mode ends You can set the time later (eg the set time considering the sunset time), and vice versa in winter.

As an example, the second motor rotation control mode of this embodiment may be configured as follows.

The motor 50 has a preset rotation origin position (ZP), the control unit 100 is the rotation position (RP) of the motor 50 based on the rotation origin position (ZP) in the second motor rotation control mode ) to control the change. As an example, the change control of the rotation position RP of the motor 50 may be performed in the manner of fine rotation adjustment (50um) of the motor 50, but is not limited thereto. For example, in the second motor rotation control mode, the motor 50 may rotate up to 180 degrees per day.

Preferably, the change of the rotational position RP of the motor 50 may be set so that the position at which the sun S moves by time period is located between the central portions 40-1 of the plurality of lens panels 40. In addition, it may be set and stored in the memory of the controller 100 in the form of a rotation speed value starting from the rotation origin position ZP of the motor 50 or a rotation position value for each time period.

As described above, when the movement position of the sun S coincides with or close to the position of the central portion 40-1 of any one lens panel 40, the sunlight through the lens panel (in particular, the central lens) Condensation occurs and deterioration of internal components (LED, circuit board, sensor connection line, etc.) that received the concentrated sunlight may occur.

In consideration of this point, in this embodiment, the rotational position RP of the motor 50 is set so that the position at which the sun S moves by time period is located between the central portions 40-1 of the plurality of lens panels 40. By changing the control, the collection of sunlight through the lens panel (especially the central lens) is prevented.

As a preferred example, the change of the rotational position RP of the motor 50 is a vertical position in which the sun S moves by time is located in the middle of the central portion 40-1 of the plurality of lens panels 40. It can be controlled to match frame 82 . This concept of control can be understood through FIG. 6 . 6 shows the change in the rotational position RP of the motor 50 so that the position of the vertical frame 82 follows the position of the sun S according to the position change (a -> b -> c) of the sun (S) The state to be controlled is exemplified. This control is performed during the set time of the second motor rotation control mode.

For this control, the motor 50 of this embodiment is capable of controlling the origin movement to a preset rotational origin position (ZP), and based on the rotational origin position (ZP), a motor capable of controlling the change of the rotational position (RP). use. In addition, the control unit 100 stores a physical angular relationship between the rotation origin position ZP of the motor 50 and the position of the center 40 - 1 of the lens panel 40 or the position of the vertical frame 82 .

For example, the control unit 100 of this embodiment sets the origin movement control time (second motor rotation control mode start time) in consideration of the sunrise time and sunrise azimuth for each date, and starts the second motor rotation control mode At the time of controlling the origin movement of the motor 50 to the rotation origin position (ZP), and control to change the rotation position (RP) of the motor 50 at a preset rotation speed. The preset rotation speed is, for example, the speed at which the position at which the sun S moves by time period as shown in FIG. 6 matches the vertical frame 82 or rotates to maintain a state close to the vertical frame 82 within an error range. can be The preset rotation speed does not necessarily have to be a constant speed.

Thereafter, when the time at which the second motor rotation control mode ends (eg, a set time in consideration of the sunrise time) comes, the second motor rotation control mode is terminated and the first motor rotation control mode is started. When the first motor rotation control mode is started, the motor 50 rotates at a preset rotation speed of the light fixture. A time interval may be provided between the end of the second motor rotation control mode and the start of the first motor rotation control mode, and conversely, a time interval may also be provided between the end of the first motor rotation control mode and the start of the second motor rotation control mode. have.

As a modification, the second motor rotation control mode may further include a stop mode for stopping the rotation of the motor 50 according to a date condition or a time zone condition.

Referring to FIG. 5 , based on the change state during the day, the sun S changes in height from the sunrise height P1 to the highest height P4 and the sunset height P7.

However, the concentration of sunlight through the lens panel (in particular, the central lens) is strongly generated when the irradiation direction of sunlight is directed toward the center 40-1 of the lens panel 40 or its proximity position, and the irradiation direction of sunlight is the lens It becomes weak when facing the central part 40-1 of the panel 40 obliquely.

In consideration of this point, it is not necessary for the motor 50 to continuously rotate during the entire daytime period, and in particular, the motor 50 may rotate only during a time period in which sunlight is strongly condensed.

For example, when referring to FIG. 5 , when the sun S is at the height of P1 to P2 and P6 to P7, the altitude of the sun is not high and the light collection is not strong, so the motor 50 needs to continue to rotate there is no

In addition, when the sun S is at the height of P3 to P4 and P4 to P5, although the altitude of the sun is high, the center 40-1 of the lens panel 40 is obliquely directed or shaded by the lantern BR. Therefore, the light collection is not strong or does not occur. Even in this case, it is not necessary for the motor 50 to continue to rotate.

Therefore, when the sun (S) is at the heights (or time zones) of P1 ~ P2, P3 ~ P4, P4 ~ P5, P6 ~ P7, it operates in a stop mode to stop the rotation of the motor 50, and it is required to drive the motor electricity can be saved. In addition, when the sun S is at the heights of P2 to P3 and P5 to P6, the motor 50 is rotationally controlled to prevent the condensing of sunlight.

Since the heights of P1 to P7 change for each season, the controller 100 may store the time zone information of the stop mode for each day in a memory (not shown) and execute the motor rotation control accordingly.

As another example, the second motor rotation control mode of this embodiment may be configured as follows.

In the case of this embodiment, it is relatively simple to rotate the motor 50 by setting it at a low speed (eg, 0.2 RPM or less) during the day and rotating it at a set speed (set value of the rotary light fixture) at night to maintain the function of the night light. execute control.

To this end, the motor rotation speed of the second motor rotation control mode may be configured to have a lower rotation speed than the motor rotation speed of the first motor rotation control mode.

This type of control has the advantage of preventing the collection of sunlight according to the continuous low-speed rotation in the daytime without a relatively complicated data setting process of storing information on the motor rotation time that changes by day of the year in the memory of the control unit 100. have. In addition, since the control is performed at a low speed, there is an advantage in that electricity consumption due to the rotation of the motor is also reduced.

Although the present invention has been mainly described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various and obvious modifications can be made therefrom without departing from the scope of the present invention. Accordingly, the scope of the present invention should be construed by the appended claims to cover many such modifications.

10: light source driving unit
18: electric cylinder
20: hydraulic jack
30: rotating plate
40: lens panel
50: motor
52: rotor
54: brush slip ring
64a, 64b: LED
70,72: support
80: lens protector
82: vertical frame
90: lower base
100: control unit
B: light flag
BR: lantern
UB: upper body
DB: lower body
S: sun
RP: motor rotation position
ZP: Rotation origin position

Claims (5)

an upper back body including a plurality of lens panels installed symmetrically about the rotation axis and arranged to radiate light from a light source installed therein, and a lens protector for fixing and supporting the plurality of lens panels;
A lower part comprising a support extending upward from the ground side, a motor installed on the upper part of the support, and a rotating plate supporting the upper back body coupled to the upper side and transmitting the rotational driving force of the motor located at the lower side to the upper body to rotate it isomer; and
Includes; a control unit for controlling the operation of the light source unit and the motor;
The control unit is
A first motor rotation control mode in which the motor rotates in a state in which the light source emits light in order to provide a lamp function in the night time, and a motor in a state in which the light source does not emit light to provide a function of preventing solar light condensing during the daytime A lamp having a function to prevent deterioration by sunlight, characterized in that it has a second motor rotation control mode to rotate.
According to claim 1,
The motor has a preset rotation origin position,
The control unit has a function of preventing deterioration by sunlight, characterized in that for controlling the change of the rotation position of the motor based on the rotation origin position in the second motor rotation control mode.
3. The method of claim 2,
The change of the rotation position of the motor is,
A lamp having a function to prevent deterioration by sunlight, characterized in that the position at which the sun moves by time is controlled to be located between the centers of the plurality of lens panels.
3. The method of claim 2,
The second motor rotation control mode is a lamp having a function to prevent deterioration by sunlight, characterized in that it further comprises a stop mode for stopping the rotation of the motor according to the date condition or time zone condition.
According to claim 1,
The motor rotation speed of the second motor rotation control mode is configured to have a lower rotation speed than the motor rotation speed of the first motor rotation control mode.

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