JP2001180553A - Safety light for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simply structured and inexpensive vehicle safety light capable of clearly notifying the other party having no light of one's existence by automatically generating electricity by efficiently using vibration of the vehicle during travelling and making an emitter emit light by using the electric power, while having a light load or travelling of the vehicle and causing low operating noise. SOLUTION: This vehicle safety light has a body frame, front and back frames, a safety light body detachable to a handle and saddle, an emitter which is placed in the safety light body and can be visualized from the outside, a rechargeable battery placed in the safety light body and a piezoelectric generator connected to the rechargeable battery. The piezoelectric generator is structured so that plural piezoelectric ceramic bodies are formed out of layered ceramic bodies, they are disposed and electricity is generated by making them collide with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety light for a non-powered traveling vehicle such as a bicycle or a wheelchair, and more particularly to a vehicle safety device capable of obtaining electric energy by a traveling vibration of the vehicle to emit light. About lights.

[0002]

2. Description of the Related Art For example, taking a conventional bicycle safety light as an example, the conventional bicycle safety light is composed of a generator and a lamp, and the generator is housed in its case. , A power generating coil, a rotatable magnet for applying a magnetic flux to the coil, and a friction wheel for driving the magnet. Then, the generator is mounted on the front fork or rear fork of the bicycle, and when the friction wheel is pressed against the tire of the bicycle, the rotation of the tire is transmitted to the friction wheel by frictional force, and the magnet rotates by the friction wheel. Then, power is induced in the power generating coil, and the generated power is supplied to a lamp connected to the power generator to turn on the lamp.

[0003] However, in the above-mentioned conventional bicycle safety light, when the above-mentioned lighting is performed, the friction wheel is rotated by mechanical contact between the tire and the friction wheel. In addition to the problem of heavy load on the vehicle, which makes the vehicle heavier, and also causes tire wear. Was.

The present invention has been made in view of the above situation, and has as its object to automatically generate electric power by efficiently utilizing the running vibration of a vehicle, and to emit a light-emitting body with this electric power. By providing this, a non-lit partner can be clearly informed of his / her own presence, and the load on the running of the vehicle is small. What you want to do.

[0005]

In order to achieve the above object, a first safety light for a vehicle according to the present invention comprises: a safety light body detachable from a main body frame, front and rear frames, a steering wheel or a saddle; A light-emitting body disposed in the safety light body and visible from the outside, a rechargeable battery disposed in the safety light body, and a piezoelectric generator connected to the rechargeable battery are configured. The piezoelectric generator is formed of a layered piezoelectric ceramic body in which two plate-shaped piezoelectric ceramic bodies are joined with the polarization reversed, and one or both surfaces of the piezoelectric ceramic body are mounted on a vehicle. It is configured to generate power by beating by running vibration of the vehicle.

Further, according to the present invention, as a second means for achieving the above object, a safety light for a vehicle which can be detachably attached to a body frame, front and rear frames, a handle or a saddle, A light-emitting body disposed inside the main body and visible from outside, a rechargeable battery disposed in the safety light main body, and a piezoelectric generator connected to the rechargeable battery; The generator is formed of a layered piezoelectric ceramic body in which two plate-like piezoelectric ceramic bodies are joined with the polarization reversed, and the center of one surface of the piezoelectric ceramic body is joined to a cushion material, The other side is configured to be hit by the running vibration of the vehicle to generate power.

In this case, the piezoelectric ceramic bodies joined to the cushion material are arranged face to face, and a hard beating body is provided between the two piezoelectric ceramic bodies for reciprocating between them and hitting each piezoelectric ceramic body. Is desirable.

According to the present invention, as a third means for achieving the above object, a safety light for a vehicle which can be detachably attached to a main body frame, front and rear frames, a steering wheel or a saddle; A light-emitting body disposed inside the main body and visible from outside, a rechargeable battery disposed in the safety light main body, and a piezoelectric generator connected to the rechargeable battery; The generator is formed of a layered piezoelectric ceramic body in which two plate-shaped piezoelectric ceramic bodies are joined with the polarization reversed, and both ends of the piezoelectric ceramic body are supported by cushioning materials. It is characterized in that the side surface or both surfaces are configured to be hit by the running vibration of the vehicle to generate power.

In this case, according to the present invention, a piezoelectric ceramic body supported by the cushion material is disposed, and one or both sides of the piezoelectric ceramic body is reciprocated between the piezoelectric ceramic body and the piezoelectric ceramic body. A hard beating body for beating a ceramic body is provided.

Further, in the present invention, the two piezoelectric ceramic bodies may be formed in the same form.

Further, according to the present invention, as a fourth means for achieving the above-mentioned object, a safety light main body detachable to a main body frame, front and rear frames, a handle or a saddle, and a safety light main body, A light-emitting body disposed inside the main body and visible from outside, a rechargeable battery disposed in the safety light main body, and a piezoelectric generator connected to the rechargeable battery; The generator is formed of a layered piezoelectric ceramic body by joining a plurality of piezoelectric ceramic bodies with their polarities reversed, and arranging at least two or more of these piezoelectric ceramic bodies so as to be able to abut each other. They are configured to collide with each other by running vibration of the vehicle to generate power.

In the fourth aspect of the present invention, it is desirable that the center of the piezoelectric ceramic body is supported by a cushion material.

Further, in the fourth invention, one of the piezoelectric ceramic bodies is supported by a cushion material, and the other piezoelectric ceramic body is moved or rocked to abut against the one piezoelectric ceramic body to generate power. It is characterized by the following.

Further, in the fourth invention, the two piezoelectric ceramic bodies are held together via a cushion material,
It is characterized in that both piezoelectric ceramics are arranged so as to move or swing and abut each other.

According to the first to fourth aspects of the present invention, a protector plate is adhered to the beating surface of the piezoelectric ceramic body, and the protector plates are beaten by running vibration of the vehicle to generate power. It is characterized by doing.

In particular, in the fourth invention, it is desirable that the protector plate is formed so as to protrude from a hitting surface portion of the piezoelectric ceramic body. Specifically, it is desirable that the protector plate is formed, for example, in a hemispherical shape.

Further, in the first to fourth aspects of the present invention, the piezoelectric ceramic body is formed by joining a plurality of piezoelectric ceramic bodies in layers.

According to the present invention, the piezoelectric ceramic body is formed of a zinc-zirconate-based material.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the accompanying drawings.

As shown in FIG. 1, a vehicle safety light V according to this embodiment includes a main body frame F1, a front and rear frame F2,
F3, a handle F4 or a saddle F5, a detachable safety light main body 8 attached to any or a plurality of locations, a light emitting body L disposed in the safety light main body 8 and visible from the outside,
The rechargeable battery B is disposed in the safety light main body 8 and a piezoelectric generator A connected to the rechargeable battery B. The rechargeable battery B is electrically connected to the piezoelectric generator A via the rectifier circuit S.

The safety light main body 8 is formed of a box-shaped body or a cylindrical body whose inside is hollow and waterproofed, and at least one surface portion is formed of a transparent glass plate or a synthetic resin. The rechargeable battery B and the piezoelectric generator A are built therein, and an on / off switch and a stopper (not shown) having a known configuration are provided on the outer surface thereof. I have. Of course, the light emitting body L is also disposed in the safety light main body 8, and is disposed so as to irradiate light from the transparent portion to the outside.

The safety light body 8 constructed as described above is positioned at a desired position of the vehicle (excluding rotating parts such as wheels) via the stopper.
The safety light main body 8 swings due to the running vibration of the vehicle, and the voltage generated by the piezoelectric generator A is rectified by the rectifier circuit S and charged to the rechargeable battery B.
The light emitting body L is turned on with the charged power. Preferably, in order to enable charging regardless of the polarity of the voltage generated in the piezoelectric generator A, it is desirable to use a circuit in which a bridge is combined with a diode as the rectifier circuit S. Further, in order to prevent lighting during the day, a light-sensitive resistor using a light quantity sensor (CDS) is connected to the charging circuit of the rechargeable battery B so that the light emitting body L is automatically turned on only at night. It is desirable to do. Furthermore, an overcharge and overdischarge prevention circuit is connected to the charging circuit of the rechargeable battery B, and when the piezoelectric generator A does not generate power for a predetermined time, the overcharge and overdischarge prevention circuit is automatically opened. It is desirable.

Next, an example of the configuration of the piezoelectric generator A will be described sequentially. The piezoelectric generator A1 shown in FIG. 2 has a piezoelectric ceramic body 1 disposed at both ends of a cylindrical container 8 having both ends closed,
The piezoelectric ceramic body 1 generates power by hitting a steel ball 4. Cushion plate 3 on one side of container 8
Is bonded using an adhesive 6, and the piezoelectric ceramic body 1 is bonded only to the central portion of the cushion plate 3 using the adhesive 5. Similarly, the piezoelectric ceramic body 1 is bonded to the other side surface of the container 8 so that both sides face each other. A protector plate 2 is fixed to the center of the facing surfaces of the two piezoelectric ceramic bodies 1. Then, a pipe 7 is arranged between the two piezoelectric ceramic bodies 1, and a rollable steel ball 4 is provided in the pipe 7.

The piezoelectric ceramic body 1 is composed of two plate-shaped piezoelectric ceramic bodies 1a, 1b of the same form (the same material, the same shape, and the same thickness).
The junctions are made with the polarities of a and 1b reversed.
By joining the ceramic elements 1a and 1b of the same form, the two ceramic elements 1a and 1b vibrate flexibly around the joint surface (the part that does not expand or contract). In this case, when the ceramic element 1a on one side expands, the ceramic element 1b on the other side contracts, and the electrodes of the output voltage are in the same direction, and the two piezoelectric ceramic bodies 1a and 1b are connected in series. Becomes

The piezoelectric ceramic bodies 1a and 1b are known for use as a conversion element between mechanical energy and electrical energy. Many inorganic and organic substances exhibiting a piezoelectric effect are known. Is a PZT-based (piezoe)
electrical ceramics).

A piezoelectric ceramic body is a device in which a high direct current voltage is applied to a polycrystalline body to generate remanent polarization to give piezoelectricity. The piezoelectric ceramic body can change the basic piezoelectric constant quite freely by its composition. The zinc-zirconate-based piezoelectric ceramic body has a wide selection range of composition ratios and additives, and is suitable for a vehicle safety light as in the present invention.

By the way, when the flexural vibration is carried out around the joint surface, one of the piezoelectric ceramic bodies 1a (or 1)
In b), both the extension and the contraction are performed, and the power generation is efficiently performed without canceling the polarization.
The generated electric current as electric energy is taken out using the lead wire 9.

Although two piezoelectric ceramic bodies 1a and 1b are laminated here, each piezoelectric ceramic body 1a is laminated.
(1b) can have a laminated structure. In this laminated structure, a plurality of thin piezoelectric ceramic bodies are joined (in this case, the polarity of polarization is the same) to form one piezoelectric ceramic body 1a (or 1b). in this way,
By using a laminated structure, for example, when joined by an adhesive having elastic characteristics, the elastic effect makes it easy to bend the ceramic plate material lacking in material strength, thereby maintaining the bending strength, and reducing the thickness. By doing so, the ceramic plate becomes stronger against bending. Further, the outer shape of the piezoelectric ceramic body 1 is not particularly limited, but the front shape may be a circle, an ellipse, a triangle, a square, a polygon, or the like.

The cushion plate 3 is made of a synthetic resin material, a rubber material or a sponge-like soft material. The reason why such a cushion plate 3 is used, and that the piezoelectric ceramic body 1 is fixed to only the center portion of the cushion plate 3 with the adhesive 5 is that the vibration of the piezoelectric ceramic body 1 is not attenuated. When the piezoelectric ceramic body 1 vibrates, the member supporting the piezoelectric ceramic body 1 becomes a factor for attenuating the vibration of the piezoelectric ceramic body 1, and in order to eliminate the damping factor, the cushion plate 3 is used to minimize the piezoelectric ceramic body. Leave 1 free.

By using the cushion plate 3, the natural vibration of the piezoelectric ceramic body 1 lasts for a long time, so that the power generation efficiency is improved. The cushion material is a piezoelectric ceramic body 1
To reduce the impact applied to The protector plate 2 is made of metal, synthetic resin, or the like, and protects the piezoelectric ceramic body 1 from hitting the steel ball 4.

When a vehicle safety light equipped with the piezoelectric generator A1 having such a configuration is fixed to a vehicle, the steel ball 4
Rolls in the pipe 7 to strike the left and right piezoelectric ceramic bodies 1 and apply impact energy due to collision. And
The piezoelectric ceramic body 1 is excited to vibrate, repeats its expansion and contraction, and generates AC electricity.

Here, as the hit body, the steel ball 4 is arranged in the pipe 7 to hit the piezoelectric ceramic body 1, but the material and shape of the hit body are limited to steel balls. Instead of a heavy object, a heavy object such as a column or an egg may be used. In addition, not only the pipe 7, but also a form in which the hit body can move along the rail as long as the hit body can move freely. In addition, a spring material (upward or downward) is used in place of the pipe 7, one end of the spring material is fixed, and the steel ball 4 is attached to the other end. Body 1
Can be beaten.

FIG. 3 shows a charging circuit for charging the electricity generated by the piezoelectric generator A1. This charging circuit includes PZT1 and PZT2 as two piezoelectric ceramic bodies 1, rectifying diodes D1 to D6, and a rechargeable battery B for storing electricity. The electricity generated by PZT1 is full-wave rectified by diodes D1 to D3, and the electricity generated by PZT2 is full-wave rectified by diodes D4 to D6. The full-wave rectified electricity is charged to the rechargeable battery B. The full-wave rectified electricity is charged to the rechargeable battery B. When the switch SW is operated, the rechargeable battery B
Is a required number of luminous bodies L composed of light emitting diodes and the like.
Lights up.

FIG. 4 shows an example of a piezoelectric generator A2 using one piezoelectric ceramic body 1. This piezoelectric generator A2
Uses a cylindrical container 12 whose both ends are closed, and a cushion member 1 is provided on an upper surface and a lower surface of a central portion of the container 12.
The piezoelectric ceramic bodies 1 (1 a, 1 b) are fitted into the recesses of the cushion member 11 and supported. Protector plates 2 are attached to both sides of the piezoelectric ceramic body 1. Then, pipes 7 are arranged on both sides of both piezoelectric ceramic bodies 1, and rolling steel balls 4 are provided in these pipes 7. The material of the cushion member 11 is the same as that of the cushion plate 3, and the other members are also as described above.

When the vehicle safety lamp equipped with the piezoelectric generator A2 is fixed to the vehicle, the steel balls 4 roll in the pipe 7 due to the running vibration of the vehicle, and the piezoelectric ceramic bodies 1 are alternately formed. When the piezoelectric ceramic body 1 is beaten, the vibration is excited, and the expansion and contraction are repeated, thereby generating AC electricity.

FIG. 5 shows an example of a wind-bell type piezoelectric generator A3. In this piezoelectric generator A3, the piezoelectric ceramic body 1 is attached to two places (three or more places are possible) on the inner peripheral surface of the bell-shaped container 14 so as to face each other. When mounting,
The cushion plate 3 is bonded 6 to the inner peripheral surface, and the piezoelectric ceramic body 1 is bonded only to the center of the cushion plate 3 using the bonding material 5. Similarly, the piezoelectric ceramic body 1 is arranged on the surface facing this, and both piezoelectric ceramic bodies 1
Attach the protector plate 2 to the center of the facing surface.

Then, the steel ball 4
Is suspended from the steel ball 4. The material and the like of each member are as described above. By fixing the piezoelectric generator A3 to the vehicle, the steel ball 4 swings due to the traveling vibration and strikes the piezoelectric ceramic body 1, and the piezoelectric ceramic body 1 generates AC electricity.

FIG. 6 shows an example of a piezoelectric generator A4 using a spring material. The piezoelectric generator A4 suspends the steel ball 4 using a spring material 18, arranges a cushion plate 3 below the steel ball 4, and fixes the piezoelectric ceramic body 1 using an adhesive 5 only at the center of the cushion plate 3. The protector plate 2 is fixed to the center of the piezoelectric ceramic body 1. The material and the like of each member are as described above. When the piezoelectric generator A4 is fixed to the vehicle, the spring material 18 expands and contracts due to its running vibration. Therefore, the steel ball 4 hits the piezoelectric ceramic body 1 continuously, and the vibration is excited to generate electric power.

Further, for example, a piezoelectric generator in the form of a windmill that can be mounted on wheels or the like may be used. In the case of this windmill type piezoelectric generator, the surface of each surface formed radially
As described above, the piezoelectric ceramic body 1 is fixed using the cushion plate 3 and the adhesive 5, and the windmill is rotated by using the rotational force of the wheel, and the piezoelectric ceramic body 1 that rotates and moves is one after another. The steel ball 4 movably attached to one end of a material or the like may be hit to generate power.

The piezoelectric generator A5 shown in FIG. 7 has a piezoelectric ceramic body 1 at both ends of a housing 18 having both ends closed.
0 (PZT1) and 10 (PZT2) are opposed to each other with their axes shifted slightly.
Electric power is generated by colliding zeros.

Then, the cushion plates 13 and 13 are bonded to both sides of the housing 18 with adhesives 16 and 16, and the adhesives 15 and 15 are used only at the central portions of the cushion plates 13 and 13. Piezoelectric ceramic body 10, 10
Glue. A protector plate 2 is fixed to the center of the facing surfaces of the two piezoelectric ceramic bodies 1. In the present embodiment, the two piezoelectric ceramic bodies 10, 10 are formed to be curved in an arc shape.

The piezoelectric ceramic body 10 (PZT)
1) and 10 (PZT2) are two circular plate-shaped piezoelectric ceramic bodies 10a and 1 having the same material, similar shape, and the same thickness.
0b is joined by reversing the polarity of the polarization of each of the ceramic elements 10a and 10b. By joining the ceramic elements 10a and 10b, the two ceramic elements 10a and 10b vibrate flexibly around the joint surface (a portion that does not expand or contract). In this case, the configuration of the power generation system and the charging system, the piezoelectric ceramic body, the cushion plate, and the protector plate are the same as those of the piezoelectric generator A.
1 to A4, and a detailed description thereof will be omitted.

In this embodiment, the case where the piezoelectric ceramic bodies 10 and 10 are supported via the adhesive 15 and the cushion material 13 has been described as an example. However, one or both of the piezoelectric ceramic bodies 10 and 10 may be supported instead. 10, 10 fixed to one end of a spring (may be supported upward or downward)
The other end of the piezoelectric ceramic body 1 is attached to the housing 18 and the spring material is expanded and contracted left and right and vertically oscillated.
0 and 10 may collide.

As described above, the piezoelectric generator A5 is configured to generate power by causing the piezoelectric ceramic bodies 10, 10 to collide with each other, so that the configuration as a power generation device is extremely simplified, and Piezoelectric ceramic body 1
Since 0 and 10 are curvedly formed in an arc shape, the piezoelectric ceramic bodies 10 and 10 can be disposed as close as possible in a normal state, so that the entire device can be reduced in size. Is obtained.

The piezoelectric generator A6 shown in FIG. 8 has a piezoelectric ceramic body 10 (PZT1) like the piezoelectric generator A5.
And a piezoelectric ceramic body 10 (PZT2), and a third piezoelectric ceramic body 10 (PZT3) inside the housing 18 between the piezoelectric ceramic body 10 (PZT1) and the piezoelectric ceramic body 10 (PZT2). The piezoelectric ceramic body 10 (PZT3) is suspended from above by swinging the piezoelectric ceramic body 10 (PZT3) in the left-right direction, whereby the piezoelectric ceramic body 10 (PZT1) or the piezoelectric ceramic body 10 (PZT2) to collide with the piezoelectric ceramics 10 (PZT1), 10 (PZT2), 10 (PZT2).
3) Except that each vibration is excited and each piezoelectric ceramic body 10 is repeatedly expanded and contracted to generate AC electricity, other configurations and operations are the same as those of the piezoelectric generator A5. Since it is configured, its detailed description is omitted here. The piezoelectric ceramic body 10
In the case of (PZT3), since the colliding portion is different from the other piezoelectric ceramic bodies 10 (PZT1) and 10 (PZT2), the protector plate 12 is connected to the piezoelectric ceramic body 10 (PZT3).
Both generators are different in that they are disposed from both end sides of ZT3) to the periphery.

Therefore, the piezoelectric generator A according to each of the above embodiments is described.
According to 5, A6, the structure is simpler than that of the piezoelectric generators A1 to A4, the size can be reduced, and the manufacturing cost can be reduced.

In each of the piezoelectric generators A5 and A6, a case has been described in which the piezoelectric ceramic body is curved in an arc shape and the piezoelectric ceramic body is directly collided to generate electric power. However, the present invention is not limited to this. Considering the difficulty and cost of manufacturing, the piezoelectric ceramic body is formed into a flat plate like the piezoelectric generators A1 to A4, and is adhered to the striking surface of the piezoelectric ceramic body. The protector plate to be formed is formed in a shape protruding from the hitting surface portion, for example, a hemispherical shape, a cylindrical shape, or a polygonal column shape shown in FIG. 9, or one protector plate is formed in a U-shaped cross section, and By forming the protector plate into a size and shape that can be inserted with a small gap in the recess of the one protector plate, the piezoelectric generator can be further reduced in size and cost can be reduced. Since it is desirable.

[0048]

As described above, in the vehicle safety light according to the present invention, the main body frame, the front and rear frames,
A safety light body detachably attached to the handle or the saddle, a luminous body provided in the safety light body and visible from the outside, a rechargeable battery provided in the safety light body, and connected to the rechargeable battery. The above-mentioned piezoelectric generator of a safety lamp for a vehicle, comprising: a plurality of piezoelectric ceramic bodies formed of a layered piezoelectric ceramic body; Since it is configured to generate power by colliding with each other, it is possible to automatically generate power by efficiently using the running vibration of the vehicle, and by illuminating the luminous body with this power, You can clearly know your existence, the load on the running of the vehicle is small, the operating noise is small, and the number of parts is reduced compared to this type of conventional vehicle safety light So you can An effect that can be achieved a reduction of mold and manufacturing cost.

Further, since the structure in which the layered piezoelectric ceramic body is supported by the cushion material is employed, the vibration of the piezoelectric ceramic body lasts long, so that the power generation efficiency is improved.

Further, according to the piezoelectric generator provided in the vehicular safety light according to the present invention, two piezoelectric ceramic bodies having the same material, similar shape and the same thickness are used to change the polarization polarity of each ceramic element. By joining in reverse, centering the joint surface of the two ceramic elements (the part that does not expand or contract)
Since the piezoelectric ceramic body is formed so as to bend and vibrate, the piezoelectric ceramic body is appropriately expanded and contracted, and the power generation efficiency is further improved.

Further, when the piezoelectric ceramics are made to collide with each other and vibrate, the size of the piezoelectric power generation can be further reduced and the cost can be reduced.

Furthermore, since the protector plate is attached to the portion of the piezoelectric ceramic body to be hit, there is an effect that the piezoelectric ceramic body is effectively protected against a collision load of the piezoelectric ceramic body. The shape of the protector plate is, for example, a shape protruding from the hitting surface portion of the piezoelectric ceramic body so that a direct collision vibration can be easily obtained even if the piezoelectric ceramic body is formed in a plate shape, for example, a semi-spherical shape. By forming it into a cylindrical or polygonal column shape, it is possible to further reduce the manufacturing cost.

Further, each of the piezoelectric ceramic bodies is
Since a plurality of sheets are joined in layers, there is an effect that the strength of the piezoelectric ceramic body can be maintained. Further, since a titanium zirconate zinc-based material is used as the piezoelectric ceramic body, an excellent effect that the power generation efficiency becomes very good and that it is practically effective can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a bicycle to which a vehicle safety light according to an embodiment of the present invention is fixed.

FIG. 2 is an explanatory diagram showing a first configuration example of a piezoelectric generator constituting the piezoelectric generator.

FIG. 3 is a circuit diagram of a rechargeable battery of the piezoelectric generator.

FIG. 4 is an explanatory diagram showing a second configuration example of the piezoelectric generator.

FIG. 5 is an explanatory diagram showing a third configuration example of the piezoelectric generator.

FIG. 6 is an explanatory diagram showing a fourth configuration example of the piezoelectric generator.

FIG. 7 is an explanatory view showing a fifth configuration example of the piezoelectric generator.

FIG. 8 is an explanatory diagram showing a sixth configuration example of the piezoelectric generator.

FIG. 9 is an explanatory view showing a modified configuration example of a protector plate of the piezoelectric generator.

[Explanation of symbols]

 A1, A2, A3, A4, A5, A6 Piezoelectric generator B Rechargeable battery F1 Body frame F2 Front fork F3 Rear fork F4 Handle F5 Saddle L Light emitter V Vehicle safety light S Rectifier circuit 1,10 Piezoelectric ceramic body 1a, 1b , 10a, 10b Piezoelectric ceramic body 2 Protector plate 3, 11 Cushion material (cushion plate) 4 Striking body (steel ball) 8 Safety light body

Claims (15)

[Claims] 1. A safety light body detachable from a main body frame, front and rear frames, a handle or a saddle, a luminous body provided in the safety light body and visible from the outside, and provided in the safety light body. And a piezoelectric generator connected to the rechargeable battery, wherein the piezoelectric generator is formed by joining two plate-shaped piezoelectric ceramic bodies with their polarities reversed. A vehicular safety lamp characterized by being formed of a layered piezoelectric ceramic body and generating power by hitting one or both surfaces of the piezoelectric ceramic body by running vibration of the vehicle. 2. A safety light body detachably attached to a main body frame, front and rear frames, a handle or a saddle, a luminous body provided inside the safety light body and visible from the outside, and provided inside the safety light body. And a piezoelectric generator connected to the rechargeable battery, wherein the piezoelectric generator is formed by joining two plate-shaped piezoelectric ceramic bodies with their polarities reversed. Vehicle safety characterized by forming a layered piezoelectric ceramic body, joining the center of one side of the piezoelectric ceramic body to a cushion material, and hitting the other side by running vibration of the vehicle to generate power. light. 3. The piezoelectric ceramic body joined to the cushion material is arranged face-to-face, and a hard beating body is provided between the two piezoelectric ceramic bodies for reciprocating between the two and hitting each piezoelectric ceramic body. The safety light for vehicles according to claim 2, characterized in that: 4. A safety light body detachably attached to a main body frame, front and rear frames, a handle or a saddle, a luminous body provided in the safety light body and externally visible, and provided in the safety light body. A rechargeable battery, and a piezoelectric generator connected to the rechargeable battery. The piezoelectric generator has a layered shape obtained by joining two plate-shaped piezoelectric ceramic bodies with their polarities reversed. The piezoelectric ceramic body is formed by supporting both ends of the piezoelectric ceramic body with a cushioning material, and one side or both sides of the piezoelectric ceramic body is beaten by running vibration of a vehicle to generate power. Safety lights for vehicles. 5. A hard beating device in which a piezoelectric ceramic body supported by the cushion material is disposed, and one or both sides of the piezoelectric ceramic body is reciprocated between the piezoelectric ceramic body and the piezoelectric ceramic body to strike the piezoelectric ceramic body. The vehicle safety light according to claim 4, further comprising a body. 6. The vehicle safety lamp according to claim 1, wherein the two piezoelectric ceramic bodies are formed in the same form. 7. A safety light body detachably attached to a main body frame, front and rear frames, a handle or a saddle, a luminous body provided in the safety light body and visible from the outside, and provided in the safety light body. A rechargeable battery, and a piezoelectric generator connected to the rechargeable battery. The piezoelectric generator is configured by joining a plurality of piezoelectric ceramic bodies with their polarizations in opposite directions to form a layered piezoelectric ceramic body. It is formed of a ceramic body, and at least two or more of the piezoelectric ceramic bodies are arranged so as to be able to abut.
A vehicular safety light characterized in that these piezoelectric ceramic bodies collide with each other due to the running vibration of the vehicle to generate power. 8. The vehicular safety light according to claim 7, wherein a center portion of the piezoelectric ceramic body is supported by a cushion material. 9. The method according to claim 1, wherein one of the piezoelectric ceramic bodies is supported by a cushion material, and the other piezoelectric ceramic body is moved or rocked to abut against the one piezoelectric ceramic body to generate power. 7 or Claim 8
The safety light for a vehicle according to any one of the above. 10. The piezoelectric ceramic bodies are held together via a cushion material, and the piezoelectric ceramic bodies are arranged so as to move or swing and abut against each other. Item 10. A vehicle safety light according to any one of Items 9. 11. A power generation system according to claim 1, wherein a protector plate is adhered to a striking surface of said piezoelectric ceramic body, and said protector plates are beaten by running vibration of a vehicle to generate power. The vehicle safety light according to any one of 10 above. 12. The vehicle safety light according to claim 11, wherein the protector plate is formed so as to protrude from a striking surface of the piezoelectric ceramic body. 13. The device according to claim 11, wherein the protector plate is formed in a hemispherical shape.
3. The vehicle safety light according to any one of 2. 14. The piezoelectric ceramic body according to claim 1, wherein the piezoelectric ceramic body is formed by joining a plurality of layers.
A vehicle safety light according to any one of claims 13 to 13. 15. The vehicle safety lamp according to claim 1, wherein the piezoelectric ceramic body is formed of a zinc-zirconate-zinc-based material.