CN216556915U

CN216556915U - Light-emitting device based on piezoelectric ceramic application

Info

Publication number: CN216556915U
Application number: CN202122748796.7U
Authority: CN
Inventors: 杨悦; 陈红余; 李平; 李冬青
Original assignee: Shandong First Medical University and Shandong Academy of Medical Sciences
Current assignee: Shandong First Medical University and Shandong Academy of Medical Sciences
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-17
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to a light-emitting device based on piezoelectric ceramic application, which comprises a multi-tip-cone-shaped bearing plate, a rubber sleeve, a printed circuit board and a polarized sodium bismuth titanate piezoelectric ceramic sheet. The user exerts pressure to many taper type bearing plates, and piezoceramics receives pressure, and the luminous lamp pearl of LED will give out light through silica gel wire biography to the luminous lamp pearl of LED of production current. The utility model has the advantages of small volume, light weight, long service life and energy saving. The utility model discloses a both can provide the illumination for the user under the dark surrounds, can be applied to entertainment places such as dance meeting, concert again.

Description

Light-emitting device based on piezoelectric ceramic application

Technical Field

The utility model relates to the field of light-emitting devices, in particular to a novel light-emitting device which uses piezoelectric ceramics to provide current.

Background

In the existing lighting device, taking a lighting glove as an example, a battery is usually used for providing power, and a corresponding switch is used for controlling whether to light, for example, CN207411551U discloses a "novel lighting glove", CN209436302U discloses a "multifunctional rotating lighting glove for stage performance", and CN211211572U discloses a "lighting glove"; there are also some light emitting devices that use fluorescent dyes and ester compounds to emit light, such as a fluorescent stick.

The luminous gloves all use batteries as power supplies to provide current, the batteries cannot be used when the batteries are exhausted, and the treatment of the batteries can cause great influence on the environment.

In view of the above problems, the present invention provides a novel light emitting device, which is powered by the piezoelectric effect of piezoelectric ceramics and stably and continuously supplies current by applying pressure. The generated current is small, so that the human body cannot be injured.

Disclosure of Invention

Aiming at the low use benefit of the battery, the utility model provides a novel light-emitting device, which is powered by piezoelectric ceramics and stably and continuously supplies current by applying pressure.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A piezoelectric ceramic light-emitting device comprises a multi-tip-cone-shaped bearing plate, a rubber sleeve, a printed circuit board and sodium bismuth titanate piezoelectric ceramic, and consists of three parts, wherein the upper layer is the multi-tip-cone-shaped bearing plate, the middle layer is the rubber sleeve, and the lower layer is the printed circuit board which is glued with a sodium bismuth titanate piezoelectric ceramic sheet; the upper layer is an integrated multi-tip-cone-shaped bearing plate which comprises 5-7 tips, the upper tip, the middle part and the lower bottom circle, the tips of the multi-tip-cone-shaped bearing plate are right opposite to the sodium bismuth titanate piezoelectric ceramic, and the protruding part of the multi-tip-cone-shaped bearing plate is buckled with the rubber sleeve; the middle rubber sleeve is reversely buckled on the piezoelectric ceramic sheet and is glued on the printed circuit board together with the piezoelectric ceramic sheet, the back of the printed circuit board is printed with a corresponding circuit, and a corresponding lead is led out to be connected with a silica gel lead.

The multi-tip-cone-shaped bearing plate comprises three parts, namely an upper tip, a middle bulge and a lower bottom circular plate, wherein the upper tip is over against piezoelectric ceramics, the middle bulge is locked with a rubber sleeve, the purpose is to maintain the stability of the movement process, and the lower end circular plate is used for bearing pressure.

The rubber sleeve is connected to the circuit board in an inverted buckling mode, the upper end of the rubber sleeve is in a shape of a notch, and the protruding portion of the multi-tip conical pressure-bearing plate can enter the interior of the rubber sleeve through the notch.

The printed circuit board is glued with the piezoelectric ceramic sheet, the piezoelectric ceramic sheet is connected to the back of the printed circuit board through a lead, the back of the printed circuit board is printed with a corresponding circuit, the copper-clad plate conductor is connected with the silica gel conductor, and the silica gel conductor is welded on the printed circuit board.

The utility model has the beneficial effects that the piezoelectric effect of the piezoelectric ceramics is utilized to provide current, and the defect that batteries are always used to provide power for the luminous gloves is overcome.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a sodium bismuth titanate device.

Fig. 2 is a top view of a printed circuit board showing the connection of the circuit on the printed circuit board to the silicone wire.

FIG. 3 is an enlarged schematic view of a sodium bismuth titanate piezoelectric ceramic sheet.

Fig. 4 is a partially cut-away schematic view of the rubber boot.

Fig. 5 is a front view of a multi-tapered bearing plate of the sodium bismuth titanate device of fig. 1.

Fig. 6 is a top view of fig. 5.

FIG. 7 is a schematic view of the structure of a luminous glove of application example 1.

FIG. 8 is a schematic view showing the structure of a fluorescent bar according to example 2.

In fig. 1-6: 1-a multi-tip cone-shaped bearing plate; 2-rubber sleeve; 3-sodium bismuth titanate piezoelectric ceramics; 4-a printed wiring board; 5-positive pole silica gel lead; 6-negative pole silica gel wire; 7-polarizing the positive and negative electrodes of the overvoltage ceramic; 8-copper clad laminate wire;

in fig. 7: 9-a piezoelectric ceramic light emitting device; 10-glove body; 11, a flexible circuit board light bar; 12-LED light-emitting lamp beads; 13-positive and negative silica gel leads; 14-positive and negative electrode connectors on the circuit board;

in fig. 8: 15-a piezoelectric ceramic light emitting device; 16-a handle; 17-a LED light bar;

detailed description of the preferred embodiments

The piezoelectric ceramic device is composed of three parts: the device comprises a multi-tip-cone-shaped bearing plate 1, a rubber sleeve 2 and a printed circuit board 4; the tip of the multi-tip-cone-shaped bearing plate 1 is opposite to the sodium bismuth titanate piezoelectric ceramic 3, and the protruding part of the multi-tip-cone-shaped bearing plate 1 is buckled with the rubber sleeve 2; the convex part of the multi-tip cone type bearing plate 1 is buckled with the rubber sleeve 2, the rubber sleeve 2 and the piezoelectric ceramic sheet 3 welded with the sodium bismuth titanate are glued on the printed circuit board 4 together, and the printed circuit board 4 is welded with the silica gel lead 6 in a mode that the positive pole faces the positive pole and the negative pole faces the negative pole;

by applying pressure to the multi-tip-cone-shaped bearing plate 1, the bearing plate 1 extrudes the piezoelectric ceramic sheets 3 welded on the printed circuit board 4, the piezoelectric ceramic sheets 3 generate current under the action of the pressure, and the current is transmitted to the printed circuit board 4 through the lead wires and then sequentially transmitted to the silica gel flexible lead 6 to be connected with a corresponding device so as to enable the device to emit light.

Application example 1

The operation process is as follows: a user applies pressure to the multi-tip-cone-shaped bearing plate through actions of grasping, clapping and the like, the bearing plate can move downwards to extrude part or all of the piezoelectric ceramics, the piezoelectric ceramics generate positive piezoelectric effect to cause positive and negative charges to move directionally to generate current, the current passes through the positive and negative electrodes of the piezoelectric ceramics and then is transmitted to a circuit printed on the back surface of the circuit board through a lead, the current is connected to a silica gel lead through a copper-clad plate lead, the silica gel lead is connected with the positive and negative electrodes of the flexible circuit board light bar, and the current is finally transmitted to the LED light-emitting lamp beads on the flexible circuit board light bar to emit light; when a user stops holding, clapping and the like, no pressure is applied, the pressure bearing plate moves upwards, the rubber sleeve sleeves the protruding part of the multi-pointed-cone-shaped pressure bearing plate, the stability of the multi-pointed-cone-shaped pressure bearing plate is ensured, the piezoelectric ceramic is not stressed, no current is generated, the current cannot be transmitted to the LED light-emitting lamp beads, and the glove cannot emit light, as shown in fig. 7.

Application example 2

The operation process is as follows: the luminous glove can also be a fluorescent rod, the piezoelectric ceramic device is arranged at the handle position of the fluorescent rod, when a user presses a button of the handle, the multi-tip-cone-shaped bearing plate moves downwards to apply pressure on the piezoelectric ceramic to generate current, a lead is led out through a corresponding circuit and is connected with the light guide sheet, and then the fluorescent rod emits light; likewise, the lamp will not light without applying pressure thereto, i.e., without applying current, as shown in fig. 8.

Claims

1. A piezoelectric ceramic light-emitting device is characterized by comprising a multi-tip-cone-shaped bearing plate, a rubber sleeve, a printed circuit board and a polarized sodium bismuth titanate piezoelectric ceramic sheet; the device consists of three parts, wherein the upper layer is a multi-tip cone-shaped bearing plate, the middle layer is a rubber sleeve, and the lower layer is a printed circuit board which is glued with a sodium bismuth titanate piezoelectric ceramic sheet; the upper layer is an integrated multi-tip-cone-shaped bearing plate which comprises 5-7 tips, the upper tip, the middle part and the lower bottom circle, the tips of the multi-tip-cone-shaped bearing plate are right opposite to the sodium bismuth titanate piezoelectric ceramic, and the protruding part of the multi-tip-cone-shaped bearing plate is buckled with the rubber sleeve; the middle rubber sleeve is reversely buckled on the piezoelectric ceramic sheet and is glued on the printed circuit board together with the piezoelectric ceramic sheet, the back of the printed circuit board is printed with a corresponding circuit, and a corresponding lead is led out to be connected with a silica gel lead.

2. The piezoceramic light-emitting device according to claim 1, wherein the multi-tip-cone-shaped pressure bearing plate is an inner double-curved tip cone structure, and the diameter of the upper vertex circle is as follows: lower base circle diameter =1: 12~13, the radian of lower bottom plectane and cone handing-over is 2/5 pi, and the top point is just to piezoceramics, the diameter of the circle of the breach below the rubber sleeve: major axis of ellipse =1: 1 to 2.

3. The piezoceramic light-emitting device according to claim 1, wherein the rubber sleeve is glued to the printed circuit board in a reversed manner, and is in a bell shape, and the diameter of the circle of the rubber sleeve gap is as follows: the diameter of the bottom circle of the rubber sleeve is =1: 5-6.

4. The piezoelectric ceramic light-emitting device according to claim 1, wherein the printed circuit board is glued with a sodium bismuth titanate piezoelectric ceramic sheet, the piezoelectric ceramic sheet is connected with the back of the printed circuit board through a lead, the back of the printed circuit board is printed with a corresponding circuit, a copper-clad wire on the circuit is connected with a silica gel wire, and the silica gel wire is welded on the printed circuit board; the piezoelectric ceramic sheets spliced on the circuit board are 5-7 evenly distributed on the circuit board, and the rubber sleeve and the multi-tip-cone-shaped bearing plate correspond to the piezoelectric ceramic sheets one to one.