Light projection device

Abstract

To provide a light projection device which hardly falls by the wind, and in which safety has been more enhanced.SOLUTION: A light projection device 1 includes: at least one telescopic poles 20A, 20B extending / contracting in a vertical direction; light projectors 30A, 30B provided at an upper end part of the telescopic poles 20A, 20B; an anemometer 50 provided at an upper end part which at least one out of the telescopic poles 20A, 20B has, and measuring the wind speed at the upper end part; and a control device 40 for determining whether or not the wind strength blowing at the light projectors 30A, 30B has exceeded predetermined strength based on the wind speed measured by the anemometer 50 when the telescopic poles 20A, 20B are extended and, in the case it is determined that the wind strength has exceeded the predetermined strength, for contracting the telescopic poles 20A, 20B.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a light projecting device. [Background technology]

[0002] Some floodlight devices are equipped with outrigger devices to prevent them from falling over.

[0003] For example, Patent Document 1 discloses a floodlight device that includes a telescopic pole with a floodlight attached to its upper end that can be extended and retracted in the vertical direction, a stand that supports the telescopic pole and is equipped with wheels for movement, and an outrigger device attached to the stand.

[0004] The floodlight described in Patent Document 1 is provided with a proximity sensor that detects the extension of the outrigger device, and the control device extends the support pole only when the proximity sensor detects the extension of the outrigger device. This prevents the outrigger device from being forgotten to be extended, and thus prevents the floodlight from falling over. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2000-322925 A Summary of the Invention [Problem to be solved by the invention]

[0006] A vehicle may be used for the floodlight device instead of the above-mentioned stand. In this case, if the vehicle is small, the outrigger device may not be able to extend to an adequate length or may not be able to extend at all. In this case, if a strong wind hits the floodlight at the top end of the telescopic pole, the vehicle may tip over.

[0007] This is a problem that can occur in all floodlight devices that have a floodlight at the top end of a telescopic pole and are exposed to wind, even if the floodlight is a frame rather than a vehicle or is not provided with an outrigger device. As a result, it is desirable to prevent all floodlight devices that have a floodlight at the top end of a telescopic pole from falling over due to wind.

[0008] The present invention has been made to solve the above-mentioned problems, and has an object to provide a floodlight device that is less likely to tip over due to wind and has improved safety. [Means for solving the problem]

[0009] In order to achieve the above object, a floodlight device according to the present invention comprises: At least one telescopic pole that can be extended and retracted in the vertical direction; A floodlight provided at an upper end of the telescopic pole; an anemometer provided at an upper end of at least one of the telescopic poles to measure a wind speed at the upper end; a control device that, when the telescopic pole is extended, determines whether or not a strength of wind blowing against the floodlight exceeds a predetermined strength based on the wind speed measured by the anemometer, and contracts the telescopic pole when it is determined that the strength of wind exceeds the predetermined strength; Equipped with.

[0010] The anemometer measures the wind direction at the upper end, The control device may calculate the wind speed component in the direction of projection of the spotlight or the opposite direction based on the wind speed and wind direction measured by the anemometer, and determine from the calculated wind speed component whether the wind strength exceeds the specified strength.

[0011] The control device may determine the strength of the wind received by the floodlight based on an area in the floodlight projection direction or the opposite direction of the floodlight and the wind speed and direction measured by the anemometer.

[0012] a rotating device provided at an upper end of the telescopic pole, supporting the floodlight and rotating from an original position to a position in a circumferential direction of the telescopic pole based on an output of the control device; The anemometer is supported by the rotating device and rotates together with the projector by the rotating device; The control device may determine the wind speed component in the direction of projection of the spotlight or the opposite direction based on the wind speed and wind direction measured by the anemometer, and determine from the determined wind speed component whether the wind strength exceeds a predetermined strength, and if it determines that the wind strength exceeds the predetermined strength, may return the swivel device to the original position and retract the telescopic pole.

[0013] a tilting device that is provided at an upper end of the telescopic pole, supports the floodlight, and rotates about an axis perpendicular to a direction in which the telescopic pole extends and retracts, thereby tilting the floodlight from an original position in which the floodlight faces a specific direction to a position in which the floodlight faces a direction based on an output of the control device, The anemometer is supported by the tilt-tilt device and rotates together with the floodlight by the tilt-tilt device; The control device may determine the wind speed component in the direction of projection of the spotlight or the opposite direction based on the wind speed and wind direction measured by the anemometer, and determine from the determined wind speed component whether the wind strength exceeds a predetermined strength, and if it determines that the wind strength exceeds the predetermined strength, may return the tilt device to the original position and retract the telescopic pole. Effect of the Invention

[0014] According to the configuration of the present invention, when the telescopic pole is extended, the control device determines whether the strength of the wind blowing against the floodlight exceeds a predetermined strength based on the wind speed measured by the anemometer, and if it determines that the strength exceeds the predetermined strength, it retracts the telescopic pole. Therefore, the floodlight device is less likely to tip over due to the wind, and is safer. [Brief description of the drawings]

[0015] [Figure 1]1A is a perspective view of a vehicle equipped with a floodlight device according to an embodiment of the present invention, in which a telescopic pole of the floodlight device is extended, and FIG. [Diagram 2] 2 is a perspective view of an outrigger device provided in the floodlight device according to the embodiment. FIG. [Diagram 3] 3 is an enlarged view of a telescopic pole included in the floodlight device according to the embodiment. FIG. [Figure 4] 1 is a block diagram of a floodlight device and a control device according to an embodiment. [Diagram 5] 5A and 5B are diagrams illustrating a wired remote control included in the floodlight device according to the embodiment and an example of an operation screen displayed on a panel portion of a touch panel included in the wired remote control. [Figure 6] 11 is a diagram showing an example of a limit value setting screen displayed on a panel section of a touch panel of a wired remote control included in the floodlight device according to the embodiment; FIG. [Figure 7] 5 is a flowchart of an emergency process executed by a control device included in the floodlight device according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, a floodlight device according to an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent parts are given the same reference numerals. In addition, in the orthogonal coordinate system XYZ shown in the drawings, when the front-rear direction as viewed from the driver's seat of the vehicle is the X axis and the left-right direction is the Y axis, the direction perpendicular to the X axis and the Y axis is the Z axis. Hereinafter, this coordinate system will be referred to as appropriate for the description.

[0017] The floodlight device according to the embodiment is a device that is mounted on a vehicle and projects light around the vehicle when the vehicle moves to a destination. In this floodlight device, in order to prevent the floodlight device from falling over due to wind, if a strong wind blows while the telescopic pole is extended, the control device automatically retracts the telescopic pole.

[0018] Hereinafter, the floodlight and the control device provided in the floodlight will be described using an example in which the vehicle equipped with the floodlight is an automobile traveling on a road and the floodlight has two telescopic poles. First, the overall configuration of the floodlight will be described with reference to Figs. 1 to 3.

[0019] Fig. 1(A) is a perspective view of vehicle 100 equipped with a floodlight device 1 according to an embodiment when telescopic poles 20A and 20B of the floodlight device 1 are extended. Fig. 1(B) is a perspective view of vehicle 100 when telescopic poles 20A and 20B of the floodlight device 1 are contracted. Fig. 2 is a perspective view of an outrigger device 10 of the floodlight device 1.

[0020] 1(A) and 1(B), the floodlight device 1 is a device mounted on a vehicle 100, which is a small automobile. The floodlight device 1 includes an outrigger unit 10, two telescopic poles 20A and 20B, floodlights 30A and 30B provided on the telescopic poles 20A and 20B, respectively, a control device 40 that controls the operation of each part of the outrigger unit 10 and the telescopic poles 20A and 20B, and an anemometer 50 that measures the wind speed of the wind blowing against the telescopic pole 20A.

[0021] The outrigger unit 10 has a substantially rectangular frame 11 with its short side oriented in the left-right direction and its long side oriented in the front-rear direction when viewed from above, as shown in Fig. 2. The outrigger unit 10 is equipped on the vehicle 100 shown in Figs. 1(A) and 1(B) by attaching the frame 11 to the vehicle 100. To prevent the vehicle 100 from tipping over, jacks 12FR, 12FL, 12BR, and 12BL are provided on portions protruding to the right or left from the four corners of the frame 11, as shown in Fig. 2.

[0022] Each of the jacks 12FR, 12FL, 12BR, and 12BL has a cylindrical hydraulic cylinder 13 extending in the vertical direction. The hydraulic cylinder 13 has a rod portion at the lower end, and the flow of hydraulic oil from a hydraulic unit (not shown) is switched by the control of a directional control valve by the control device 40 to extend or retract the rod portion. When the vehicle 100 is stopped at a desired position, the jacks 12FR, 12FL, 12BR, and 12BL extend the rod portion to bring the rod portion into contact with the ground. This stabilizes the vehicle 100 and prevents the vehicle 100 from tipping over.

[0023] Returning to Figures 1(A) and 1(B), the frame 11 is provided with telescopic poles 20A, 20B for raising the floodlights 30A, 30B to a high position above the vehicle 100 with the rod portion of the outrigger device 10 grounded.

[0024] Each of the telescopic poles 20A and 20B is formed by a multi-stage cylinder, in other words, a telescopic cylinder. In detail, the telescopic poles 20A and 20B are formed by combining a plurality of cylindrical cylinders having different diameters, with the smaller diameter cylinders being fitted into the larger diameter cylinders. The lowest cylinders of the telescopic poles 20A and 20B are fixed to the frame 11 with the cylinder axes of the cylinders facing up and down. They are arranged in the front-rear direction. Furthermore, the telescopic poles 20A and 20B are extended by supplying the above-mentioned hydraulic oil into the cylinders under the control of a hydraulic unit (not shown) of the control device 40, or are contracted by the control device 40 opening a release valve. As a result, the telescopic poles 20A and 20B change the state of the pole between a contracted state in which the upper end is located on the roof of the vehicle 100 and an extended state in which the upper end is located high above the vehicle 100.

[0025] Further, a swivel tilt device 21 is provided at the upper end of the uppermost cylinder of each of the telescopic poles 20A and 20B. Fig. 3 shows an enlarged view of the telescopic poles 20A and 20B.

[0026] Fig. 3 is an enlarged view of the telescopic poles 20A, 20B provided in the floodlight device 1. For ease of understanding, Fig. 3 shows the telescopic poles 20A, 20B when they are raised in a direction perpendicular to the horizontal plane, i.e., in the +Z direction, by the outrigger device 10. Also, Fig. 3 shows the telescopic poles 20A, 20B when they project light in the +X direction, as viewed from the light projection direction. Furthermore, the actual telescopic poles 20A, 20B are aligned in the X direction, but for ease of understanding, Fig. 3 shows the telescopic poles 20A, 20B aligned in the Y direction.

[0027] As shown in Fig. 3, a swivel tilt device 21 is provided at the upper end of the top cylinder of each of the telescopic poles 20A and 20B. The swivel tilt device 21 includes a fixed shaft 22 at the upper end of the top cylinder and a rotating part 23 (also referred to as a rotating device in the claims). The fixed shaft 22 extends directly upward from the upper end of the top cylinder of the telescopic poles 20A and 20B. The rotating part 23 rotates around the fixed shaft 22 by controlling an actuator (e.g., a DC motor) (not shown) by the control device 40. As a result, in the swivel tilt device 21, the rotating part 23 rotates horizontally in a desired direction by the control of the control device 40.

[0028] In addition, the swivel / tilt device 21 further includes a rotation shaft 24 extending horizontally from the swivel section 23, and holders 25, 26 attached to both ends of the rotation shaft 24, respectively.

[0029] The rotating shaft 24 rotates when another actuator (e.g., a DC motor) (not shown) is controlled by the control device 40. As a result, the rotating shaft 24 tilts the holders 25, 26 to a desired depression or elevation angle. Since the rotating shaft 24 and the holders 25, 26 are a mechanism for depression and elevation, they are also referred to as an elevation device in the claims. The rotating shaft 24 is also referred to as an axis perpendicular to the extension and retraction direction of the telescopic poles 20A, 20B.

[0030] Holder 25 has a plate bent into an L shape, and projectors 30A and 30B are provided on the upper and lower sides of the horizontal line of the L shape. Holder 26 has a plate bent into an inverted L shape, and projectors 30A and 30B are provided on the lower side of the horizontal line of the inverted L shape. Furthermore, an anemometer 50 or a camera 60 is provided on the upper side of the horizontal line of the inverted L shape.

[0031] Furthermore, a rotating shaft 24 is connected to the vertical line portion of the L-shape of holder 25 and the vertical line portion of the inverted L-shape of holder 26. As a result, when rotating shaft 24 of swivel-tilt device 21 rotates, floodlight 30A or 30B and anemometer 50 or camera 60 provided on holders 25, 26 are tilted up or down. When rotating section 23 of swivel-tilt device 21 rotates, floodlight 30A or 30B and anemometer 50 or camera 60 rotate. In this way, swivel-tilt device 21 points floodlight 30A or 30B and anemometer 50 or camera 60 in the desired direction.

[0032] Each of the floodlights 30A and 30B includes a plurality of LEDs (Light Emitting Diodes) arranged on the side of the light-emitting surface. In the floodlights 30A and 30B, the LEDs are turned on when the telescopic poles 20A and 20B are extended and the revolving and tilting device 21 is rotated and tilted to face a desired direction under the control of the control device 40. As a result, the floodlights 30A and 30B emit light in the desired direction to illuminate that direction.

[0033] On the other hand, the anemometer 50 is composed of an ultrasonic anemometer. The anemometer 50 includes, for example, a pair of transducers facing each other on the plate of the holder 26, and another pair of transducers facing each other on a line intersecting the line connecting the pair of transducers, and measures the propagation time of ultrasonic waves between the pair of transducers to measure wind speed and direction. The anemometer 50 is installed on the plate of the holder 26 of the rotation and elevation device 21 provided on the telescopic pole 20A, and as a result, the anemometer 50 rotates and elevates together with the floodlight 30A provided on the holders 25 and 26 by the rotation and elevation device 21. As a result, the anemometer 50 measures the wind direction and wind speed relative to the light emitting surface of the floodlight 30A. In other words, it measures the wind direction and wind speed relative to the light projection direction. The anemometer 50 then transmits the measurement data to the control device 40.

[0034] The camera 60 is installed on the plate of the holder 26 of the tilt-and-turn device 21 provided on the telescopic pole 20B. The camera 60 rotates and tilts together with the floodlight 30B provided on the holders 25 and 26 by the tilt-and-turn device 21 to capture an image of an object or a person in the direction of the floodlight 30B. In this way, the camera 60 monitors the surroundings of the floodlight device 1. The camera 60 transmits image data obtained by capturing an image to a hard disk drive provided in the vehicle 100. Alternatively, the image data is transmitted to a monitoring display, whereby the image is displayed on the display and the monitor can see the image. The camera 60 may transmit image data to a terminal such as a server for monitoring or recording.

[0035] In this way, in the floodlight device 1, the telescopic poles 20A, 20B are extended to raise the floodlights 30A, 30B to a position higher than the vehicle 100, and the turning and tilting device 21 turns and tilts the floodlights 30A, 30B to face the desired direction. Then, the floodlights 30A, 30B illuminate the desired direction.

[0036] Such floodlight device 1 is used, for example, at disaster sites where roads are narrow and parking spaces are small. For such roads and parking spaces, a small vehicle or minivan that can turn quickly is desirable. Therefore, in order to mount floodlight device 1 on a small vehicle or minivan, telescopic poles 20A, 20B that are thinner and smaller than a telescopic boom are used for floodlight device 1.

[0037] However, in the case of the telescopic poles 20A and 20B, the wind receiving area of ​​the floodlights 30A and 30B tends to be larger than the wind receiving area of ​​the telescopic poles 20A and 20B. As a result, even if the vehicle 100 is stabilized by the outrigger device 10, the vehicle 100 may overturn if a strong wind, for example, a wind exceeding the wind resistance of the floodlight device 1, blows. For this reason, it is desirable not only to check the wind speed and extend the telescopic poles 20A and 20B, but also to quickly contract and store the telescopic poles 20A and 20B if a wind exceeding the wind resistance of the floodlight device 1 blows after the telescopic poles 20A and 20B are extended.

[0038] Furthermore, if a strong wind blows from the side of the vehicle 100, the vehicle 100 may overturn even if the vehicle 100 is stabilized by the outrigger device 10. For this reason, it is desirable to quickly retract and store the telescopic poles 20A, 20B even when a strong wind blows from the side of the vehicle 100.

[0039] Therefore, in order to prevent the vehicle 100 from tipping over, in the floodlight device 1, the control device 40 judges whether or not a wind is blowing with a strength exceeding the wind resistance performance of the floodlight device 1 from the measurement data of the anemometer 50, and when it judges that a wind is blowing with a strength exceeding the wind resistance performance, it automatically contracts and stores the telescopic poles 20A, 20B. In addition, it returns the swivel tilt device 21 to the origin. Next, the configuration of the control device 40 and the processing performed by the control device 40 will be described with reference to Figs. 4 to 7.

[0040] FIG. 4 is a block diagram of the floodlight device 1 and the control device 40. As shown in FIG. 4, the control device 40 includes a computer including a CPU (Central Processing Unit) 41 and a memory 42. The CPU 41 reads and executes various programs stored in the memory 42 to perform various processes for controlling the components of the floodlight device 1. For example, when a wind is blowing with a strength exceeding the wind resistance performance of the floodlight device 1, an emergency process is performed to store the telescopic poles 20A and 20B.

[0041] Furthermore, in order to perform the various processes described above, the control device 40 includes an input / output unit 43 that inputs and outputs signals between the floodlight power supply 31, the swivel / tilt device 21, the anemometer 50, the tilt angle sensors 71, 72, the outrigger device 10, the telescopic poles 20A, 20B, the wired remote control (wired remote controller) 73, and the receiving device 74. The computer of the control device 40 performs the various processes described above from signals input to the input / output unit 43 from these devices and equipment. The input / output unit 43 also outputs signals for the various processes described above to these devices and equipment.

[0042] Here, the floodlight power supply 31 refers to a component that supplies power to the floodlights 30A and 30B. The inclination angle sensors 71 and 72 refer to sensors that measure the left-right inclination angles of the front and rear parts of the frame 11 of the outrigger unit 10. The receiving device 74 refers to a device that receives a control signal transmitted by a wireless remote control (wireless remote controller) 75.

[0043] Among the various types of processing described above, the emergency processing described above will be explained in detail. Fig. 5 is a diagram showing the wired remote control 73 and an example of an operation screen displayed on the panel section of the touch panel 733 of the wired remote control 73. Fig. 6 is a diagram showing an example of a limit value setting screen 736 displayed on the panel section of the touch panel 733. Fig. 7 is a flowchart of emergency processing executed by the control device 40. Note that Fig. 5 illustrates a screen for operating the telescopic pole 20A as an example of the operation screen.

[0044] As shown in FIG. 5, the wired remote control 73 includes a touch panel 733 in addition to various operation keys 731 and switches 732. The touch panel 733 displays the state of each part of the floodlight device 1, and a switch 734 for switching the screen is provided on the touch panel 733. The touch panel 733 can switch from an operation screen 735 shown in FIG. 5 to a limit value setting screen 736 shown in FIG. 6 by using the switch 734. The limit value setting screen 736 is provided with a text box 737 for inputting the limit value of the wind speed at which emergency processing should be started (in the claims, the wind of this wind speed value is the wind of the wind speed value input in advance, and is also called wind of a predetermined strength, and for example, refers to a wind speed value at which the telescopic poles 20A and 20B may be damaged or the vehicle 100 may fall over. In other words, refers to a wind speed value that exceeds the wind resistance performance of the floodlight device 1. Hereinafter, it is also called a danger value because it is a danger value of the wind speed). Then, the user of the floodlight device 1 inputs a wind speed danger value into a text box 737 using a key (not shown) of the touch panel 733. When the wind speed danger value is input into the text box 737, the touch panel 733 transmits data on the wind speed danger value to the control device 40, and the control device 40 stores the data on the danger value in the memory 42 described above.

[0045] On the other hand, after the floodlight device 1 is started, when the user operates the wired remote control 73 or the wireless remote control 75 to extend the telescopic poles 20A, 20B, the control device 40 reads out an emergency program for monitoring the wind speed and performing emergency processing from the memory 42, and executes the emergency program. This starts the flow of emergency processing shown in FIG. 7.

[0046] After startup, the control device 40 reads out various programs and executes various processes, but in the following explanation, for ease of understanding, only the flow of emergency processing will be explained. In addition, the following explanation is premised on the fact that the outrigger unit 10 is grounded, the telescopic poles 20A, 20B are extended, and the floodlights 30A, 30B are turned on.

[0047] First, the control device 40 acquires wind speed data including the wind direction and wind speed values ​​measured by the anemometer 50 from the anemometer 50 (step S1).

[0048] Next, the control device 40 judges whether the wind speed value obtained from the wind speed data exceeds a safe value (step S2). In detail, the control device 40 obtains the magnitude of the wind speed component in the direction perpendicular to the light emitting surface of the projectors 30A, 30B from the wind direction and wind speed value of the wind speed data obtained from the anemometer 50. That is, the control device 40 obtains the magnitude of the wind speed component in the direction of projection of the projectors 30A, 30B or the opposite direction (hereinafter, referred to as the wind speed component in a specific direction). Meanwhile, the control device 40 reads out data on the danger value of the wind speed from the memory 42, and obtains the safe value of the wind speed by multiplying the read danger value of the wind speed by a safety factor, for example, a ratio of 60%. Then, the control device 40 judges whether the wind speed component in the specific direction exceeds the obtained safe value.

[0049] When the control device 40 determines that the wind speed component in the specific direction does not exceed the safe value (No in step S2), the control device 40 returns to step S1. As a result, the control device 40 acquires wind speed data from the anemometer 50 and continues to monitor the wind speed.

[0050] On the other hand, when the control device 40 determines that the wind speed component in the specific direction exceeds the safety value (Yes in step S2), it displays a warning on the operation screen of the wired remote control 73 (step S3). This notifies the user that a strong wind exceeding the safety value is blowing, thereby ensuring the user's safety.

[0051] After displaying the warning on the operation screen of the wired remote control 73, the control device 40 further judges whether or not the wind speed value obtained from the wind speed data exceeds a danger value (step S4). In detail, the control device 40 judges whether or not the wind speed component in the specific direction obtained in step S2 exceeds the wind speed danger value read from the memory 42 in the same step.

[0052] When the controller 40 determines that the wind speed component in the specific direction does not exceed the danger value (No in step S4), the controller 40 returns to step S1, whereby the controller 40 continues to monitor the wind speed.

[0053] On the other hand, when the control device 40 determines that the wind speed component in the specific direction exceeds the danger value (Yes in step S4), it turns off the floodlights 30A and 30B and returns the turning and tilting device 21 to the origin (step S5). For example, the control device 40 turns off the floodlights 30A and 30B, and then, when the position at which the floodlights 30A and 30B are directed in front of the vehicle 100 is the turning origin (also referred to as the original position in the claims), it returns the turning and tilting device 21 to the turning origin. Furthermore, when the position at which the floodlights 30A and 30B are directed straight up is the tilt origin (also referred to as the original position in the claims where the floodlights 30A and 30B are directed in a specific direction) of the turning and tilting device 21, it returns the turning and tilting device 21 to the tilt origin.

[0054] If floodlights 30A, 30B are not illuminated, step S5 only returns swivel-tilt device 21 to its origin. Whether swivel-tilt device 21 is swiveling or tilting from the swivel origin or tilt origin, or whether it has returned to these origins, can be determined from the voltage values ​​of a potentiometer for measuring the swivel angle and a potentiometer for measuring the tilt angle provided in swivel-tilt device 21.

[0055] Next, the control device 40 contracts the telescopic poles 20A and 20B (step S6). That is, the control device 40 contracts the telescopic poles 20A and 20B and stores each cylinder of the telescopic poles 20A and 20B in the lowest cylinder. At this time, when the tilt origin of the swiveling tilt device 21 is a position that points the floodlights 30A and 30B straight up, the control device 40 stores the floodlights 30A and 30B in a lying down state on the roof of the vehicle 100.

[0056] Furthermore, the control device 40 displays an emergency stop on the operation screen of the wired remote control 73 (step S7). This notifies the user that an emergency stop has occurred as a result of strong winds. Also, the operation screen displays a state in which the extension of the telescopic poles 20A, 20B and the rotation and elevation of the rotation and elevation device 21 cannot be performed unless the emergency stop state is released, thereby informing the user that operations are restricted.

[0057] After displaying the emergency stop, the control device 40 ends the emergency processing flow. As a result, the control device 40 ends monitoring the wind speed. When the emergency stop state is released and the telescopic poles 20A, 20B are extended, the control device 40 resumes the flow from step S1. When the floodlight device 1 is lowered and the power supply of the control device 40 is turned off, the above flow is forcibly ended.

[0058] In the above explanation of the emergency processing flow, for ease of understanding, it is assumed that the telescopic poles 20A, 20B are extended. However, whether the telescopic poles 20A, 20B are extended can be determined by calculating the height of the telescopic poles 20A, 20B, i.e., the extension length, from the amount of hydraulic oil supplied from a hydraulic unit (not shown).

[0059] As described above, in the floodlight 1 according to the embodiment, the control device 40 determines the magnitude of the wind speed component in the direction perpendicular to the light emitting surfaces of the floodlights 30A, 30B based on the wind speed measured by the anemometer 50 when the telescopic poles 20A, 20B are extended, determines whether the determined wind speed component exceeds a danger value, and contracts the telescopic poles 20A, 20B if it determines that the wind speed component exceeds the danger value. Therefore, the floodlight 1 and the vehicle 100 equipped with the floodlight 1 are less likely to tip over due to the wind, and the safety of the floodlight 1 and the vehicle 100 is improved.

[0060] Furthermore, in the floodlight device 1, when the control device 40 determines that the danger value has been exceeded, the telescopic poles 20A, 20B are retracted, so that the safety of the floodlight device 1 and the vehicle 100 is high even if the outrigger device 10 does not protrude to the side of the vehicle 100 or even if the amount of protrusion is small.

[0061] Furthermore, when the control device 40 determines that the danger value is exceeded, the floodlights 30A, 30B are turned off, so that the telescopic poles 20A, 20B can be quickly stored and the safety of the vehicle 100 can be improved.

[0062] Although the floodlight device 1 according to the embodiment of the present invention has been described above, the floodlight device 1 is not limited thereto. For example, in the embodiment, the floodlight device 1 includes two telescopic poles 20A and 20B, but in the present invention, the floodlight device 1 only needs to include at least one of the telescopic poles 20A and 20B that extend and retract in the vertical direction. Therefore, the floodlight device 1 may include either one of the telescopic poles 20A and 20B, or may include another telescopic pole in addition to the telescopic poles 20A and 20B.

[0063] In the present invention, since the floodlight device 1 is required to have at least one of the telescopic poles 20A and 20B that extend and contract in the vertical direction, the maximum extension lengths of the telescopic poles 20A and 20B may be different. Also, the extension lengths of the telescopic poles 20A and 20B may be different depending on the operation of the wired remote control 73 or the wireless remote control 75.

[0064] In the embodiment, the anemometer 50 is provided only on the telescopic pole 20A. However, the present invention is not limited to this. In the present invention, the anemometer 50 may be provided on the upper end of at least one of the telescopic poles 20A and 20B, and may measure the wind speed at the upper end. Therefore, the anemometer 50 may be provided not only on the telescopic pole 20A, but also on the telescopic pole 20B. In this case, the above emergency processing flow may be performed using data from the anemometer 50 that measures the larger wind speed, between the anemometer 50 provided on the telescopic pole 20A and the anemometer 50 provided on the telescopic pole 20B.

[0065] In the embodiment, the anemometer 50 is installed on the plate of the holder 26 of the revolving tilt device 21 provided on the telescopic pole 20A, but as described above, the anemometer 50 may be provided on the upper end of at least one of the telescopic poles 20A and 20B. Therefore, for example, the anemometer 50 may be provided on the upper end of the telescopic pole 20A to measure the direction and speed of wind blowing relative to the upper end of the telescopic pole 20A. In that case, the floodlight device 1 may be provided with a rotation sensor that measures the direction in which the revolving tilt device 21 has rotated relative to the upper end of the telescopic pole 20A, and an elevation sensor that measures the direction in which the revolving tilt device 21 has tilted relative to the upper end of the telescopic pole 20A. Furthermore, in this case, the control device 40 may determine the magnitude of the wind speed component blowing from the direction in which the light projectors 30A, 30B are projecting or the opposite direction from the measurement values ​​of the rotation sensor, the elevation sensor and the anemometer 50.

[0066] In the embodiment, the control device 40 obtains the magnitude of the wind speed component blowing from the direction in which the projectors 30A and 30B project light or the opposite direction from the wind direction and wind speed values ​​of the wind speed data acquired from the anemometer 50, and judges whether the magnitude of the wind speed component exceeds a safe value or a dangerous value. However, the present invention is not limited to this. In the present invention, the control device 40 may determine whether the strength of the wind blowing against the projectors 30A and 30B exceeds a predetermined strength based on the wind speed measured by the anemometer 50 when the telescopic pole 20A or 20B is extended. For example, the control device 40 may obtain the area of ​​the side where the light emitting surfaces of the projectors 30A and 30B are located, that is, the wind receiving area of ​​the side where the projectors 30A and 30B emit light, and may determine whether the wind strength exceeds a predetermined strength by calculating the wind pressure value obtained from the area and the above-mentioned wind speed component as the above-mentioned wind strength. In this case, the predetermined strength may be a wind strength that becomes a dangerous wind pressure calculated from the above-mentioned wind-receiving area and the wind speed that becomes a dangerous value.

[0067] In the above description, it is assumed that the light-emitting sides, i.e., the light-emitting surfaces, of the floodlights 30A and 30B are easily affected by the wind, but when other parts of the floodlights 30A and 30B are easily affected by the wind, the control device 40 may obtain the wind pressure from the wind-receiving area of ​​the other parts. For example, when the floodlights 30A and 30B are formed in a cylindrical shape and the cylindrical surface is easily affected by the wind, the control device 40 may obtain the wind pressure from the wind-receiving area of ​​the cylindrical surface. When obtaining the wind pressure from the wind-receiving area of ​​the other parts, the control device 40 may obtain the wind pressure from the wind-receiving area of ​​the other parts and the wind speed component in the front direction of the other parts.

[0068] In the embodiment, the control device 40 judges whether the magnitude of the wind speed component in a specific direction exceeds a safe value or a dangerous value. However, the present invention is not limited to this. In the present invention, it is sufficient that the control device 40 judges whether the magnitude exceeds the dangerous value, and when it judges that the dangerous value is exceeded, it retracts the telescopic poles 20A, 20B. In this way, the judgment by the control device 40 of whether the magnitude exceeds the safe value may be an arbitrary judgment. This is because even in such a case, when the magnitude of the wind speed component exceeds the dangerous value, the control device 40 can automatically retract the telescopic poles 20A, 20B to ensure safety.

[0069] In the embodiment, the anemometer 50 is an ultrasonic anemometer, but the present invention is not limited to this. The anemometer 50 may be a cup type, a windmill type, a hot wire type, or the like. Also, an arrow vane type may be used in combination.

[0070] In addition, in the embodiment, the vehicle 100 is a small car, but the present invention is not limited thereto, and the vehicle 100 may be a large vehicle, or may be a mount without a prime mover as in Patent Document 1. Furthermore, the present invention may be used as a floodlight device 1 alone without being provided on the vehicle 100. [Explanation of symbols]

[0071] 1. Floodlight 10 Outrigger device 11 Frame 12FR, 12FL, 12BR, 12BL Jack 13 Hydraulic cylinder 20A, 20B Telescopic pole 21 Swivel elevation device 22 Fixed axis 23 Swivel section 24 Rotating Axis 25,26 Holder 30A, 30B Floodlight 31 Floodlight power supply 40 Control device 41 CPU 42 Memory 43 Input / output section 50 Anemometer 60 Camera 71,72 Inclination sensor 73 Wired remote control 74 Receiving Equipment 75 Wireless remote control 100 vehicles 731 Operation Key 732,734 Switches 733 Touch Panel 735 Operation screen 736 Limit value setting screen 737 Text Box

Claims

1. At least one telescopic pole that can be extended and retracted in the vertical direction; A floodlight provided at an upper end of the telescopic pole; an anemometer provided at an upper end of at least one of the telescopic poles to measure a wind speed at the upper end; a control device that, when the telescopic pole is extended, determines whether or not a strength of wind blowing against the floodlight exceeds a predetermined strength based on the wind speed measured by the anemometer, and contracts the telescopic pole when it is determined that the strength of wind exceeds the predetermined strength; A floodlight device comprising:

2. The anemometer measures the wind direction at the upper end, the control device determines a wind speed component in the projection direction of the light projector or the opposite direction based on the wind speed and wind direction measured by the anemometer, and determines whether or not the wind strength exceeds the predetermined strength based on the determined wind speed component.

2. The light projecting device according to claim 1.

3. the control device determines the strength of the wind received by the floodlight based on an area of ​​the floodlight in the light projection direction or the opposite direction and the wind speed and wind direction measured by the anemometer; The floodlight device according to claim 2 .

4. a rotating device provided at an upper end of the telescopic pole, supporting the floodlight and rotating from an original position to a position in a circumferential direction of the telescopic pole based on an output of the control device; The anemometer is supported by the rotating device and rotates together with the projector by the rotating device; the control device determines a wind speed component in the projection direction of the floodlight or the opposite direction based on the wind speed and wind direction measured by the anemometer, and determines whether or not the wind strength exceeds a predetermined strength from the determined wind speed component, and when it is determined that the wind strength exceeds the predetermined strength, returns the swivel device to the original position and retracts the telescopic pole.

4. The floodlight device according to claim 2 or 3.

5. a tilting device that is provided at an upper end of the telescopic pole, supports the floodlight, and rotates about an axis perpendicular to a direction in which the telescopic pole extends and retracts, thereby tilting the floodlight from an original position in which the floodlight faces a specific direction to a position in which the floodlight faces a direction based on an output of the control device, The anemometer is supported by the tilt-tilt device and rotates together with the floodlight by the tilt-tilt device; the control device obtains a wind speed component in the projection direction of the floodlight or the opposite direction based on the wind speed and wind direction measured by the anemometer, determines whether or not the wind strength exceeds a predetermined strength from the obtained wind speed component, and when it is determined that the wind strength exceeds the predetermined strength, returns the tilt device to the original position and retracts the telescopic pole.

4. The floodlight device according to claim 2 or 3.

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