JPH1145063A - Advertising signboard device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to rotate and control the advertising signboard disposed on the roof of an automobile by an electric motor. SOLUTION: A supporting shaft 4 is erected on a bearing body 2 installed on the roof of a body 1 of the automobile. A pipe shaft 4a rotated by an electric motor M is loosely inserted to the supporting shaft 4. The advertising signboard A is supported at the pipe shaft 4a. This advertising signboard A is adapted to be stopped and locked at the rotating angle position to minimize air pressure resistance during the high-speed traveling of the automobile and to be rotationally driven during the stoppage or low-speed traveling of the automobile. Since the advertising signboard A on the roof of the automobile is made of a rotational type, the advertising effect may be exhibited to the max. possible extent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an advertising signboard device mounted on a roof of an automobile.

[0002]

2. Description of the Related Art An advertising sign cannot be used to its fullest effect unless it is placed in a place where more people can see it. In view of the above, the advertising signboard mounted on the roof of a car can be actively touched by a large number of people over a wide range, so that the effect as an advertising signboard can be greatly enhanced. However, when the advertising signboard is installed on the roof of the car, the wind pressure resistance increases in proportion to the increase in the running speed of the car, which causes a loss of the horsepower of the car engine and makes it difficult to drive at high speed. There are a number of problems, such as the need for strength to withstand large wind pressures. In order to solve the above-mentioned problem, the present applicant disclosed in Japanese Unexamined Patent Application Publication No. 60-50049, installing an advertising signboard on the roof of a car so as to be able to move up and down, and holding the advertising signboard in an upright posture when the car is running at low speed. We have proposed an advertising signboard device that can be changed to a horizontal position that does not receive wind pressure resistance during high-speed running.

[0003]

However, in the advertising signboard device having the above-described structure, the advertising signboard placed in the horizontal posture is invisible to human eyes, and the effect as the advertising signboard is lost. In addition, an advertisement signboard placed in a standing posture has a disadvantage that a person can only see the advertisement sign in a certain direction, and the viewing range of the advertisement display is narrow.

[0004] The present invention has been made to solve the above problem, and even if the advertising signboard is held in an upright posture,
It is a main object of the present invention to provide an advertising signboard device for an automobile that can freely change the wind pressure resistance received in a traveling direction of the automobile to a minimum and that can maximize the viewing range of an advertising display. .

[0005]

SUMMARY OF THE INVENTION A billboard apparatus for a vehicle according to the present invention comprises a rotating billboard which is driven to rotate by an electric motor on the roof of a car, and a speedometer when the car is stopped or running at a low speed. The power supply circuit switch of the electric motor is turned on by the detection signal of the sensor to rotate the billboard, and during the high-speed running of the car, the power supply circuit switch of the motor is turned off by the detection signal of the speed sensor to rotate the billboard. Means for stopping the signboard during rotation, means for controlling the signboard to stop at a rotation angle position that minimizes the wind pressure resistance received in the traveling direction of the vehicle, and stopped at the angle position. Means for locking the advertising sign in its stop angle position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a preferred embodiment of the present invention, as shown in FIGS. 1 to 4, a support shaft 4 is erected on a holder 2 provided on a roof of a vehicle body 1, and a support shaft 4 is provided. The tube shaft 4a loosely inserted into the shaft 4 is rotatably driven by an electric motor M, and the advertising sign A is supported on the tube shaft 4a, and a cam disk 9 having a V-shaped groove 8 and the sign driving pulley 7 are attached. While the vehicle is running at a high speed, the distal roller 12 of the lever 10 linked to the plunger 14 of the electromagnetic actuator 13 is driven by the V of the cam disk 9.
Engagement with the shape groove 8, thereby locking the advertising sign in a rotational angle position that minimizes the wind pressure resistance received in the traveling direction of the vehicle, and when the vehicle is stopped or traveling at low speed, the electromagnetic actuator 13 Roller 12 is connected to V-shaped groove 8 of cam disk 9
And release the lock, turn on the power supply circuit to the electric motor, turn on the advertising sign A, and stop the rotating advertising sign as described above in the traveling direction of the automobile. It is configured to stop at a rotation angle position that minimizes the received wind pressure resistance.

[0007]

1 to 4 show an embodiment of a billboard apparatus for an automobile according to the present invention. In FIG. 1, reference numeral 1 denotes a vehicle body of an automobile, 2 denotes a holder provided on the roof of the vehicle body, and 3 denotes a seat plate for attaching the receiver to, for example, rain gutters at left and right ends of the roof of the automobile. Reference numeral 4 denotes a support shaft erected on the holder, and a tube shaft 4a rotatably loosely inserted into the support shaft 4.
, A rectangular advertising signboard A is fixed. The tube shaft 4a is rotationally driven by a motor M provided on a holder via a pulley 5, a belt 6, and a pulley 7 attached to the tube shaft 4a.

[0008] For the purpose described later, the pipe shaft 4a has
A cam disk 9 having a V-shaped groove 8 is supported. on the other hand,
One end of a lever 10 is attached to a predetermined portion of the
The other end of the lever 10 is provided with a roller 12 for engaging with the V-shaped groove 8 of the cam disk 9 to lock the rotation of the cam body.

A tip of a plunger 14 of an electromagnetic actuator 13 installed on the holder 2 is connected to a halfway portion of the lever 10 with a pin 15. 16 is an exciting coil, 1
Reference numeral 7 denotes a plunger biasing spring. The plunger 14
Has a receiving groove 19 at a predetermined portion thereof, and by engaging a tip of a plunger 21 of an electromagnetic actuator 20 separately installed in the holder 2 with the receiving groove 19,
Can be restricted. Reference numeral 22 denotes an exciting coil, and 23 denotes a plunger biasing spring.

[0010] In the electric circuit, S ₁ is a switch which is turned on and off by the rod member 10a which is displaced so as to follow the rotation of the lever 10 and a stationary contact piece, the movable contact piece. S ₂ is an arm member 2 displaced following the sliding of the plunger 21.
The switch which is turned on / off by 1a,
Consists of a movable contact piece. E is power supply, S ₃ is manual switch, S ₄
Is a switch (hereinafter referred to as a speed sensor switch) that is turned on / off by a detection signal from a speed sensor or a wind pressure sensor of the vehicle. L ₁ is a relay for controlling the power supply circuit to the motor M, L ₂ is a relay for controlling the electromagnetic actuator 13, L ₃ is a relay for controlling the electromagnetic actuator 20. Consists of a movable contact piece.

Next, the operation and operation of the advertising signboard device having the above configuration will be described. If the car runs at high speed (eg
(Km / h or more) state, as shown in FIG.
Speed sensor switch S ₄ is turned off, the relay L _2, L ₃ is in de-energized state and the relay L ₁ is also in de-energized state by the separate electrical circuits. Motor M is stopped by the switch S ₁ off in the feeder circuit. When the motor M is stopped, the tip roller 12 of the lever 10 is engaged with the V-shaped groove 8 of the cam disk 9, and the advertising sign A supported by the tube shaft 4a is shown in FIG. As described above, the vehicle is locked at the rotation angle position that minimizes the wind pressure resistance received in the traveling direction of the vehicle.

Next, when the running speed of the automobile is low (30
Km / h or less, or becomes a stop), as shown in FIG. 4, the speed sensor switch S ₄ is turned on. When the switch S ₄ is turned on, the relay L ₂ is energized, the coil of the movable contact piece is connected to the fixed contact piece of the lower from the upper stationary contact piece, the electromagnetic actuator 13 connected to it 16 Since a circuit to switch S ₂ -ground is formed, the coil 16
Urges the plunger 14 to slide downward against the spring 17, the lever 10 associated with the plunger 14 rotates about the support shaft 11, and the roller 12 on the tip side of the plunger 14 After disengaging from the groove 8, the cam disk 9 can freely rotate together with the advertising sign A supported by the tube shaft 4a.

At this time, in the downward sliding stroke of the plunger 14, the plunger 21 of the electromagnetic actuator 20 is engaged with the receiving groove 19 of the plunger 14 by the pressing force of the spring 23. Locked to.
At this time, since the switch S ₂ which has been turned on by the arm member 21a of the plunger 21 is turned off, the circuit of the electromagnetic actuator 13 is turned off and the generation of power and heat by the electromagnetic actuator 13 is prevented .

Since the switch S _1, which has been turned off via the rod member 10 a, is turned on by the rotational displacement of the lever 10, the coil of the relay L ₁ is energized, and the movable contact / fixed contact is provided. is turned on, the circuit leading to the motor M is formed from the relay L _1, motor launches, the rotation of the billboard a initiates. In this way, the vehicle is driven while rotating the advertising sign A. When the vehicle runs at high speed, for example, when the speed exceeds 30 km / h, the speed sensor
Switch S ₄ is turned off.

[0015] Therefore, from the state shown in FIG. 4, the relay L ₂
Is deenergized, and the movable contact is connected from the lower fixed contact to the upper fixed contact, so that a circuit from the relay L _{3 to the} switch S ₁ is formed, and the contact of the relay L ₃ is turned on, and the relay L ₃ is turned on. L ₃
Since a circuit leading to the electromagnetic actuator 20 is formed, the plunger 21 slides to the right, the lock of the electromagnetic actuator 13 to the plunger 14 is released, and the plunger 14 is
, The tip roller 12 of the lever 10 is pressed against the cam disk 9, and the rotation of the cam disk 9 is continued until the V-shaped groove 8 of the cam disk 9 can engage with the roller 12. Continued. Via a lever 10 which at the same time rotational displacement when the V-shaped groove 8 and the roller 12 of the cam disk 9 is engaged, the switch S ₁ is being turned off by the rod members 10a, power supply to the motor M is cut off Then, the rotation of the cam disk 9 stops. By the stop angle position of the cam disk 9, the advertisement signboard is stopped at the rotation angle position where the wind pressure resistance received in the traveling direction of the automobile is minimized, and locked at that position.

Further, when the switch S ₁ is turned off, the relay L ₃ is deenergized, the contact is turned off, the power supply to the electromagnetic actuator 20 is cut off, and power consumption and heat generation by the electromagnetic actuator 20 are prevented. You. When the power supply to the electromagnetic actuator 20 is cut off, the magnetic force of the coil 22 disappears, and the plunger 21 is pressed against the outer peripheral surface 14 a of the plunger 14 of the electromagnetic actuator 13 by the spring 23. While this condition remains switch S ₂ is turned on, the movable contact piece of the relay L ₁ is away from the lower side of the stationary contact piece, never fed to the electromagnetic actuator 13.

[0017] The above, from a state in which rotating the billboard, but is for explaining the operation until the lock is stopped, by operating the manual switch S _3, regardless of the speed sensors and switches S _4, Advertising signs can be rotated at all times. It connects the movable contact piece of the manual switch S ₃ to either the upper stationary contact member lower stationary contact piece. Thus the same operation as when turning on the speed sensor switch S _4. Also, by setting the movable contact of the manual switch S ₃ to an intermediate position where it is not connected to any of the upper and lower fixed contacts, and setting the same operation state as when the speed sensor switch S ₄ is turned off, The rotation of the signboard can be stopped at a fixed position.

[0018]

As described above in detail, according to the present invention, a rotating advertising signboard installed on the roof of a car can be rotated while the car is stopped or running at a low speed. During high-speed driving, the signboard automatically stops rotating and stops at the rotation angle position where the wind pressure resistance in the direction of travel of the car is minimized, and the signboard can be locked at that stop position for safety. An advertising signboard device for a vehicle can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of an automobile signboard device showing one embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a driving mechanism of the advertisement signboard.

FIG. 3 is an electric circuit diagram when the automobile is running at a high speed.

FIG. 4 is an electric circuit diagram when the vehicle is stopped or running at a low speed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Car body 2 Advertisement sign holder 3 Mounting seat plate 4 Support shaft 4a Tube shaft A Advertising sign 5, 7 Pulley 6 Belt 8 V-shaped groove 9 Cam disk 10 Lever 10a Bar member 11 Support shaft 12 Roller 13 electromagnetic actuator 14 plunger 14a plunger outer peripheral surface 15 pin 16 the excitation coil 17 spring 19 receiving groove 20 electromagnetic actuator 21 the plunger 21a arm member 22 excitation coil 23 spring S ₁ of, S ₂ switches S ₃ manual switch S _4-speed sensors and switches L _1, L _2, L ₃ relay E power

Claims (1)

[Claims] 1. A rotary advertisement signboard, which is rotatably driven by a motor on the roof of a car, and a switch of a power supply circuit of the motor is turned on by a detection signal of a speed sensor when the car is stopped or running at a low speed. Means for rotating the advertising signboard to stop the rotation of the advertising signboard by turning off the power supply circuit of the electric motor according to the detection signal of the speed sensor while the car is running at high speed, and stopping the rotating advertising signboard. When the signboard is controlled to stop at the rotation angle position that minimizes the wind pressure resistance received in the direction of travel of the automobile, and the advertising signboard stopped at the angular position is locked at the stop angle position. A billboard device for an automobile, comprising: