Signal control device and control method

Abstract

The present invention relates to the technical field of traffic equipment, specifically a signal control device and a control method, including a base and a support rod, the bottom end of the support rod is arranged on one side of the top surface of the base, and the signal control device also includes: a shell, a shielding device and a lighting device; the shell is detachably arranged on the top of the support rod, the shell is a square column structure, and four groups of lampshades are arranged on the four vertical facades on the outside of the shell; the number of shielding devices is four, and the four shielding devices are respectively arranged in the inner cavity of the shell; the lighting device is arranged on the horizontal plane of the inner cavity of the shell through a fixed rod. The present invention adopts a retractable shell, which can reduce the volume of the shell when not in use and improve the storage capacity. When in use, the shell can be stretched to have complete traffic indications; the lighting device is used to rotate the spotlight shell at an angle, and when a single light source is used, complete indication of traffic signals in four directions can be achieved, with good energy efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic equipment, and in particular to a signal control device and a control method. Background Art

[0002] In emergency situations, such as natural disasters, traffic accidents, road construction or other emergencies, conventional traffic signals may not be able to meet immediate needs or may have been damaged. At this time, temporary traffic lights need to be placed in the middle of the intersection to ensure smooth and safe traffic. However, current temporary traffic lights mostly use single-light signals, because they only require one light source and control system, have a lower energy band, can extend the use time when using batteries, have the characteristics of high energy efficiency, and are small in size and highly retractable. However, a single-light signal can only provide one kind of information and cannot provide complete instructions for stop, prepare and pass. If a three-light temporary traffic signal is used, multiple light sources and control systems are required, which has low energy efficiency and a large size. Summary of the invention

[0003] The object of the present invention is to provide a signal control device and a control method to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a signal control device, comprising a base and a support rod, the bottom end of the support rod is arranged on one side of the top surface of the base, the signal control device also includes: a shell, a shielding device and a lighting device; the shell is detachably arranged on the top of the support rod, the shell is a square column structure, and four groups of lampshades are arranged on the four vertical facades on the outside of the shell; the number of the shielding devices is four, the four shielding devices are respectively arranged in the inner cavity of the shell, and the four shielding devices are respectively located on the inner walls of the four vertical facades of the shell; the lighting device is arranged on the horizontal plane of the inner cavity of the shell through a fixing rod.

[0005] Preferably, the lighting device comprises: a substrate, a base column, an electric push rod, a control mechanism, a first guide column, a connecting rod, a second guide column and a spotlight; the number of the substrates is two, the two substrates are coaxially spaced, the top surfaces of the two substrates are respectively provided with two through holes, and the two through holes are on the same axis; the number of the base columns is four, the four base columns are arranged between the two substrates along the top surface direction of the substrate, and the four base columns are located at the four corners of the substrate; the number of the electric push rods is two, the two electric push rods are mirrored at both ends of the base column, and the two electric push rods are respectively arranged on the end surfaces of the two substrates, and the working ends of the two electric push rods extend between the two substrates through the two through holes respectively; the number of the control mechanism There are two of them, and the two control mechanisms are mirror-imaged at the working ends of the two electric push rods; the number of the first guide columns is four, and the four first guide columns are rotatably arranged between the four base columns, and the four first guide columns are located on the same horizontal plane and are evenly distributed in a circular array; the number of the connecting rods is four, and the first ends of the four connecting rods are fixedly arranged on the four first guide columns, and the number of the second guide columns matches that of the first guide columns, and the four second guide columns are fixedly arranged on the second ends of the four connecting rods, and the axes of the first guide columns and the second guide columns at both ends of the same connecting rod are parallel to each other, and every two opposite second guide columns are connected to a control mechanism; the spotlight is fixedly arranged on the first guide column.

[0006] Preferably, the control mechanism includes: a horizontal plate and two vertical plates; the two vertical plates are arranged at both ends of the horizontal plate to form a U-shaped structure, and V-shaped sliding grooves are respectively opened on the extended surfaces of the two vertical plates located on the outside, and the end of the second guide column is located in the sliding groove.

[0007] Preferably, the shell comprises: a first section shell and two second section shells; the top and bottom ends of the first section shell are both open surfaces, the ends of the two second section shells have an open surface, and the two second section shells are slidably arranged at both ends of the first section shell.

[0008] Preferably, the shielding device includes: a baffle, a light-blocking cloth and a winder; the baffle is slidably arranged in the inner cavity of the shell along the vertical direction, and a light-transmitting groove is provided on the extended surface of the baffle; the number of the light-blocking cloths is two, and the two light-blocking cloths are mirror-imaged at both ends of the baffle, and the two light-blocking cloths extend out of the top and bottom ends of the shell at the far ends of the baffle respectively; the number of the winders is two, and the two winders are respectively arranged at the top and bottom ends of the shell, and are respectively connected to the far ends of the two light-blocking cloths at the far ends of the baffle.

[0009] Preferably, a top ring is provided at a position corresponding to the inner wall of the shell and the lampshade, and the top ring can move along its own axial direction, an elastic part is provided between the top ring and the shell, a magnetic ring is provided on the outer end face of the top ring, a first metal ring is provided on the outer wall of the baffle, the first metal ring and the light-transmitting groove are located on the same axis, and a second metal ring is provided on the light-blocking cloth.

[0010] Preferably, the first metal ring and the second metal ring are both made of ferromagnetic metal, and the second metal ring is made of ductile metal.

[0011] Preferably, the range illuminated by the spotlight during rotation matches the range covered by three lampshades on the same vertical plane of the shell.

[0012] A control method for a signal control device comprises the following steps:

[0013] S1. When in use, the two second-section housings are located at both ends of the first-section housing, and the first-section housing is exposed;

[0014] S2. Control the two electric push rods to move synchronously in opposite directions, so that the spotlights in two directions have appropriate rotation angles and shine on the corresponding lampshades to form traffic signals;

[0015] S3. When in the storage state, the inner end surfaces of the two second sections of the housing are in contact, and the first section of the housing is in a hidden state;

[0016] S4. Remove the shell from the end of the support rod to complete the storage.

[0017] The signal control device and control method proposed by the present invention have the following beneficial effects:

[0018] 1. The present invention adopts a retractable shell, which can reduce the volume of the shell when not in use and improve the storage capacity. When in use, the shell can be stretched to have complete traffic instructions.

[0019] 2. The present invention also utilizes the lighting device to rotate the spotlight housing at an angle, thereby achieving complete indication of traffic signals in four directions when using a single light source, and has good energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0022] Figure 3 It is the explosion schematic diagram of the present invention;

[0023] Figure 4 For the present invention Figure 3 A in the enlarged view;

[0024] Figure 5 For the present invention Figure 3 The enlarged view of point B in the figure;

[0025] Figure 6 It is a schematic diagram of the shielding device of the present invention;

[0026] Figure 7 is a schematic diagram of a lighting device of the present invention;

[0027] Figure 8 It is a schematic diagram of an explosion of the lighting device of the present invention;

[0028] Fig. 9 It is a schematic diagram of the control mechanism of the present invention;

[0029] Fig.10 Schematic diagram of the top ring of the present invention.

[0030] In the figure: 1, base; 11, storage slot; 2, support rod; 21, collar; 22, auxiliary rod; 23, threaded hole; 24, fixing bolt; 3, shell; 31, first section shell; 311, first protrusion; 32, second section shell; 321, second protrusion; 33, lampshade; 4, shielding device; 41, baffle; 411, light-transmitting slot; 412, first metal ring; 42, light-blocking cloth; 421, second metal ring Ring; 43, winder; 5, lighting device; 51, base plate; 511, through hole; 52, base column; 53, electric push rod; 54, control mechanism; 541, horizontal plate; 542, vertical plate; 543, slide groove; 55, first guide column; 56, connecting rod; 57, second guide column; 58, spotlight; 6, fixing rod; 7, top ring; 71, elastic member; 72, magnetic ring; 81, first guide rail; 82, second guide rail. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-10 The present invention provides a signal control device and a control method technical solution, and its detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0033] A signal control device includes a base 1 and a support rod 2, wherein the bottom end of the support rod 2 is arranged on one side of the top surface of the base 1, and a storage groove 11 is provided on the top surface of the base 1, and a retracted shell 3 can be placed in the storage groove 11, and accessories such as a top cover can be added to improve the protection when the shell 3 is stored, and the bottom end of the support rod 2 is detachably connected to the top surface of the base 1, including but not limited to a screw connection, and the middle cross-section of the support rod 2 is a polygonal structure, and a collar 21 is sleeved on the middle outer wall of the support rod 2, and an auxiliary rod 22 is provided on the outer wall of the collar 21, and the auxiliary rod 22 is arranged at the bottom end of the shell 3 at a distance from the collar 21, and the support rod 2 and the auxiliary rod 22 are connected to the bottom end of the shell 3. The support rod 2 is detachably connected to the shell 3, so that the shell 3 can be removed and placed in the storage groove 11 for storage. Two threaded holes 23 are provided on the outer wall of the polygonal structure in the middle of the support rod 2, and the fixing bolts 24 are screwed into the threaded holes 23. The two threaded holes 23 correspond to the telescopic and storage states of the shell 3. The bottom end of the shell 3 is fixed by the fixing bolts 24. At the same time, the support rod 2 is located at the vertical edge of the shell 3 to prevent the support rod 2 from blocking the traffic signal. At the same time, the battery, control unit, signal receiving unit and other supporting electronic components required for the control device are all arranged in the base 1. At the same time, their connection methods are well known to those skilled in the art and are not described in this scheme.

[0034] The signal control device also includes: a housing 3, a shielding device 4, a lighting device 5 and a fixing rod 6; the housing 3 is detachably arranged at the top of the support rod 2, the housing 3 is a square column structure, and four groups of lampshades 33 are arranged on the four vertical facades of the outer side of the housing 3, each group of lampshades 33 is arranged on the vertical facade of the housing 3 along the vertical direction, and the number of each group of lampshades 33 is three, which are red, yellow and green in sequence, and the red, yellow and green traffic signals are realized by the illumination of the spotlight 58, and the number of shielding devices 4 is four, and the four shielding devices 4 are respectively arranged on the housing 3 The inner cavity of the shell 3 is provided with four shielding devices 4, and the four shielding devices 4 are respectively located on the inner walls of the four vertical facades of the shell 3. The four shielding devices 4 respectively shield the four groups of lampshades 33 to ensure that among the four side walls of the shell 3, only one lampshade 33 of the three lampshades 33 on each side wall is in a lit state, and the two shielding devices 4 located on the opposite sides are in a synchronized state. The lighting device 5 is arranged on the horizontal plane of the inner cavity of the shell 3 through the fixing rod 6. The lighting device 5 can adjust the angle and cooperate with the shielding device 4 to make only one lampshade 33 on each vertical facade of the shell 3 emit light at a time.

[0035] More specifically, the lighting device 5 includes: a substrate 51, a base column 52, an electric push rod 53, a control mechanism 54, a first guide column 55, a connecting rod 56, a second guide column 57 and a spotlight 58; the number of the substrates 51 is two, the two substrates 51 are coaxially spaced, the top surfaces of the two substrates 51 are respectively provided with two through holes 511, and the two through holes 511 are on the same axis, the substrate 51 is a square plate structure, and the four same side walls of the substrate 51 are respectively provided with arc expansion grooves for expanding the rotation angle of the spotlight 58 to ensure that the rotation angle of the spotlight 58 meets the use, the number of the base columns 52 is four, and the four base columns 52 are arranged along The top surface direction of the substrate 51 is set between the two substrates 51, and the four base columns 52 are located at the four corners of the substrate 51. The four base columns 52 are distributed at the four corners of the two substrates 51 in a circular array. The spotlight 58 is located on the median plane between each two adjacent base columns 52, and cooperates with the first guide column 55 to realize the rotation of the angle of the spotlight 58. The number of the electric push rods 53 is two, and the two electric push rods 53 are mirror-imaged at both ends of the base column 52. The two electric push rods 53 are respectively set on the end surfaces of the two substrates 51. The working ends of the two electric push rods 53 extend between the two substrates 51 through two through holes 511 respectively. The electric push rods 53 adopts a high-precision electric push rod 53, which can accurately control the extended length, so as to realize the accurate rotation of the angle of the spotlight 58. The number of control mechanisms 54 is two, and the two control mechanisms 54 are mirror-imaged at the working ends of the two electric push rods 53. The number of first guide pillars 55 is four, and the four first guide pillars 55 are respectively rotatably set between the four base pillars 52, and the four first guide pillars are located on the same horizontal plane and are evenly distributed in a circular array. The four first guide pillars 55 are rotatably set between every two adjacent base pillars 52, and the four first guide pillars 55 are distributed along the four side length directions of the base plate 51. The number of connecting rods 56 is four, and the four connecting rods The first ends of 56 are respectively fixedly set on the four first guide pillars 55, the four connecting rods 56 are respectively set on the annular outer walls of the four first guide pillars 55, and the connecting rods 56 extend along the radial direction of the corresponding first guide pillars 55 and point to between the four base pillars 52. The number of second guide pillars 57 matches that of the first guide pillars 55. The four second guide pillars 57 are respectively fixedly set on the second ends of the four connecting rods 56, and the axes of the first guide pillar 55 and the second guide pillar 57 located at both ends of the same connecting rod 56 are parallel to each other. Every two opposite second guide pillars 57 are connected to a control mechanism 54, and the spotlight 58 is fixedly set on the first guide pillar 55.

[0036] Furthermore, the control mechanism 54 includes: a horizontal plate 541 and two vertical plates 542; the two vertical plates 542 are arranged at both ends of the horizontal plate 541 to form a U-shaped structure, and the two vertical plates 542 are respectively provided with V-shaped grooves 543 on the extended surfaces on the outside, and the end of the second guide column 57 is located in the groove 543. The two U-shaped control mechanisms 54 are distributed in a mirror image, and the two control mechanisms 54 are distributed at a rotation angle of 90° and can be interspersed with each other, so that the two control mechanisms 54 have two degrees of freedom in the vertical direction. The V-shaped groove 543 is to ensure that the control mechanism 54 compensates for the displacement of the second guide column 57 when it is displaced, so that the control mechanism 54 drives the second guide column 57 to move, and at the same time drives the first guide column 55 to rotate, so that the spotlight 58 changes its angle.

[0037] More specifically, the shell 3 includes: a first-section shell 31 and two second-section shells 32; the top and bottom ends of the first-section shell 31 are both open surfaces, and the ends of the two second-section shells 32 have an open surface. The two second-section shells 32 are slidably arranged at both ends of the first-section shell 31, and the upper and lower edges of the first-section shell 31 are respectively provided with first protrusions 311, and the open ends of the two second-section shells 32 have second protrusions 321, so as to achieve the extension and contraction limitation of the two second-section shells 32 and the first-section shell 31, and the shell 3 is placed in a direction perpendicular to the ground, and the effect of gravity can be used to realize the expansion of the shell 3. When the shell 3 is in the expanded state, the four sets of lampshades 33 are all in an exposed state.

[0038] More specifically, the shielding device 4 includes: a baffle 41, a light-blocking cloth 42 and a winder 43; the baffle 41 is slidably arranged in the inner cavity of the shell 3 in the vertical direction, and a light-transmitting groove 411 is provided on the extended surface of the baffle 41, and the baffle 41 can slide in a direction perpendicular to the ground, and a first guide rail 81 and a second guide rail 82 are respectively provided on the inner walls of the first section of the shell 31 and the second section of the shell 32 to ensure the moving direction of the baffle 41, and at the same time, the lengths of the first guide rail 81 and the second guide rail 82 meet the movement of the first section of the shell 31 and the second section of the shell 32, and the light-transmitting groove 411 adopts a circular structure. In order to ensure the concentration of light, a lens assembly can be added in the light-transmitting groove 411, and the lens assembly is a prior art. The light source generated by the spotlight 58 can only be emitted from the light-transmitting groove 411 and irradiated on the corresponding lampshade 33, blocking the light. There are two cloths 42, and the two light-blocking cloths 42 are mirror-imaged at both ends of the baffle 41. The two light-blocking cloths 42 extend out of the top and bottom ends of the shell 3 at the far end of the baffle 41 respectively. The baffle 41 and the light-blocking cloth 42 are both made of opaque materials. During the movement of the baffle 41, the light-blocking cloths 42 on both sides of the baffle 41 move with the baffle 41 to ensure that except for the lampshade 33 corresponding to the baffle 41, the other lampshades 33 are in a closed state, and no light source will shine on the corresponding lampshade 33 through the light-blocking cloth 42. There are two winders 43, and the two winders 43 are respectively arranged at the top and bottom ends of the shell 3, and are respectively connected to the far ends of the two light-blocking cloths 42 from the baffle 41. The two winders 43 can be controlled to be retracted and released by the control unit to achieve the movement effect of the baffle 41 in turn.

[0039] More specifically, the inner wall of the shell 3 and the lampshade 33 are both provided with a top ring 7 at positions corresponding to each other, the top ring 7 can move along its own axis, an elastic member 71 is provided between the top ring 7 and the shell 3, a magnetic ring 72 is provided on the outer end surface of the top ring 7, a first metal ring 412 is provided on the outer wall of the baffle 41, the first metal ring 412 and the light-transmitting groove 411 are located on the same axis, a second metal ring 421 is provided on the light-blocking cloth 42, and the elastic member 71 is used to ensure that the top ring 7 always has the movement pointing to the direction of the baffle 41 Trend, when the baffle 41 moves to the position of the top ring 7, the top ring 7 can abut against the baffle 41 to ensure the sealing between the baffle 41 and the shell 3 to avoid light leakage, and at the same time cooperate with the magnetic ring 72 and the first metal ring 412 to ensure the stability of the connection. Since the light-blocking cloth 42 is made of flexible material, in conjunction with the magnetic ring 72 and the second metal ring 421, when the light-blocking cloth 42 moves to the corresponding light-transmitting groove 411 position, the light-blocking cloth 42 completely covers the corresponding lampshade 33 to ensure that the lampshade 33 is in a state of not being illuminated.

[0040] Furthermore, the first metal ring 412 and the second metal ring 421 are both ferromagnetic metals, and the second metal ring 421 is a ductile metal, ensuring that the first metal ring 412 and the second metal ring 421 can be attracted by the magnetic ring 72, and the flexible metal second metal ring 421 can be stored in the interior of the winder 43 along with the light-blocking cloth 42.

[0041] Furthermore, the range of illumination of the spotlight 58 during rotation matches the range covered by the three lampshades 33 on the same vertical plane of the shell 3. The spotlight 58 has three angle states and can illuminate the red light, yellow light and green light on the same vertical plane of the shell 3 in turn.

[0042] Working principle:

[0043] When storing, the two second-stage shells 32 move toward each other to abutment, and the first-stage shell 31 is in the inner cavity of the two second-stage shells 32. At this time, the volume of the shell 3 is the smallest. The shell 3 is placed in the storage groove 11 of the base 1, and the support rod 2 is removed from the base 1 to complete the storage. In order to facilitate the movement of the base 1, a self-locking roller device can be added to the bottom surface of the base 1 to achieve the convenience of movement;

[0044] When in use, the bottom end of the support rod 2 is installed on the top surface of the base 1, and an extension rod is installed at the bottom end of the support rod 2 as needed to change the height of the top end of the support rod 2, and then the top end of the shell 3 is installed on the top end of the support rod 2, so that the shell 3 remains perpendicular to the ground. Under the action of gravity, the shell 3 is in an open state, and the ring 21 is moved to connect the auxiliary rod 22 with the bottom end of the shell 3, and then the position of the ring 21 in this state is fixed by the fixing bolt 24. At this time, the installation is completed, and the base 1 is moved to adjust the direction of the shell 3 so that the four vertical facades of the shell 3 correspond to the intersection respectively. By controlling the two electric push rods 53, the two control mechanisms 54 are synchronously moved toward or away from each other, so that the two spotlights 58 located opposite to each other synchronously generate the same pitch angle to illuminate the corresponding lampshade 33, and at the same time, the winder 43 is controlled to make the baffle 41 of the corresponding shielding device 4 move with the irradiation range of the spotlight 58, so that the light generated by the spotlight 58 can be irradiated to the corresponding lampshade 33 through the light-transmitting groove 411, thereby realizing the control of traffic signals.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A signal control device, comprising a base (1) and a support rod (2), wherein the bottom end of the support rod (2) is arranged on one side of the top surface of the base (1), characterized in that: The signal control device also includes: A shell (3), the shell (3) being detachably arranged on the top end of the support rod (2), the shell (3) being a square column structure, and four sets of lampshades (33) being arranged on four vertical facades on the outside of the shell (3); A shielding device (4), wherein the number of the shielding devices (4) is four, the four shielding devices (4) are respectively arranged in the inner cavity of the shell (3), and the four shielding devices (4) are respectively located on the inner walls of four vertical surfaces of the shell (3); An illuminating device (5), the illuminating device (5) being arranged on a horizontal plane of the inner cavity of the housing (3) via a fixing rod (6); The lighting device (5) comprises: A substrate (51), wherein the number of the substrates (51) is two, the two substrates (51) are coaxially spaced and arranged, the top surfaces of the two substrates (51) are respectively provided with two through holes (511), and the two through holes (511) are located on the same axis; Base columns (52), the number of the base columns (52) being four, the four base columns (52) being arranged between the two substrates (51) along the top surface direction of the substrate (51), and the four base columns (52) being located at the four corners of the substrate (51); An electric push rod (53), wherein the number of the electric push rods (53) is two, the two electric push rods (53) are located at two ends of the base column (52) in a mirror image, and the two electric push rods (53) are respectively arranged on the end surfaces of the two base plates (51), and the working ends of the two electric push rods (53) respectively extend through two through holes (511) to between the two base plates (51); A control mechanism (54), wherein the number of the control mechanisms (54) is two, and the two control mechanisms (54) are arranged in a mirror-like manner at the working ends of the two electric push rods (53); First guide pillars (55), the number of the first guide pillars (55) is four, the four first guide pillars (55) are rotatably disposed between the four base pillars (52), and the four first guide pillars (55) are located on the same horizontal plane and are evenly distributed in a circular array; Connecting rods (56), the number of the connecting rods (56) is four, and the first ends of the four connecting rods (56) are respectively fixedly disposed on the four first guide pillars (55), second guide pillars (57), the number of the second guide pillars (57) matching that of the first guide pillars (55), four second guide pillars (57) being fixedly disposed at the second ends of the four connecting rods (56), respectively, and the axes of the first guide pillar (55) and the second guide pillar (57) located at both ends of the same connecting rod (56) being parallel to each other, and every two opposite second guide pillars (57) being connected to a control mechanism (54); A spotlight (58), wherein the spotlight (58) is fixedly disposed on the first guide column (55); The shielding device (4) comprises: A baffle (41), the baffle (41) being slidably disposed in the inner cavity of the housing (3) along a vertical direction, and a light-transmitting groove (411) being provided on an extended surface of the baffle (41); Light-blocking cloths (42), the number of the light-blocking cloths (42) being two, the two light-blocking cloths (42) being arranged in mirror image at the two ends of the baffle (41), the two light-blocking cloths (42) being extended from the top and bottom ends of the housing (3) at the far end from the baffle (41); A winder (43), wherein the number of the winders (43) is two, and the two winders (43) are respectively arranged at the top end and the bottom end of the housing (3), and are respectively connected to the ends of the two light-blocking cloths (42) far from the baffle (41); A top ring (7) is provided at positions corresponding to the inner wall of the shell (3) and the lampshade (33); the top ring (7) is movable along its own axial direction; an elastic member (71) is provided between the top ring (7) and the shell (3); a magnetic ring (72) is provided on the outer end surface of the top ring (7); a first metal ring (412) is provided on the outer wall of the baffle (41); the first metal ring (412) and the light-transmitting groove (411) are located on the same axis; and a second metal ring (421) is provided on the light-blocking cloth (42).

2. A signal control device according to claim 1, characterized in that: The control mechanism (54) comprises: a horizontal plate (541) and two vertical plates (542); The two vertical plates (542) are arranged at both ends of the horizontal plate (541) to form a U-shaped structure, and V-shaped sliding grooves (543) are respectively opened on the extended surfaces located on the outside of the two vertical plates (542), and the end of the second guide column (57) is located in the sliding groove (543).

3. A signal control device according to claim 2, characterized in that: The housing (3) comprises: a first section housing (31) and two second section housings (32); The top and bottom ends of the first section housing (31) are both open surfaces, the ends of the two second section housings (32) have an open surface, and the two second section housings (32) are slidably arranged at both ends of the first section housing (31).

4. A signal control device according to claim 3, characterized in that: The first metal ring (412) and the second metal ring (421) are both ferromagnetic metals, and the second metal ring (421) is a ductile metal.

5. A signal control device according to claim 4, characterized in that: The range illuminated by the spotlight (58) during the rotation process matches the range covered by the three lampshades (33) on the same vertical plane of the housing (3).

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