CN204013849U - Carry the infrared receiving terminal of light-guiding pillar and there is the electronic equipment of this Receiver - Google Patents
Carry the infrared receiving terminal of light-guiding pillar and there is the electronic equipment of this Receiver Download PDFInfo
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- CN204013849U CN204013849U CN201420412636.2U CN201420412636U CN204013849U CN 204013849 U CN204013849 U CN 204013849U CN 201420412636 U CN201420412636 U CN 201420412636U CN 204013849 U CN204013849 U CN 204013849U
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Abstract
The utility model discloses a kind of infrared receiving terminal, can be arranged in electronic equipment to receive the infrared remote-controlled signal from infrared remote controller, the face-piece of described electronic equipment is provided with first through hole corresponding with described infrared receiving terminal, described infrared receiving terminal comprises support and is located at the infrared radiation receiving circuit on support, this infrared receiving circuit comprises photodiode and signal amplification chip, on described support, one form has light-guiding pillar, described light-guiding pillar is aimed at described photodiode, described light-guiding pillar comprises a signal receiving end, described signal receiving end can stretch into the first through hole of described face-piece and its end face and the front of described face-piece and flush or protrude out the front of described face-piece.Infrared receiving terminal disclosed in the utility model due to one form has can the exposed light-guiding pillar in face-piece front, thereby can reduce the loss of infrared remote-controlled signal transmittance process, greatly improve its remote control reception performance.Meanwhile, the invention also discloses a kind of electronic equipment with above-mentioned infrared receiving terminal.
Description
Technical field
The utility model relates to technical field of electronic equipment, relates more specifically to a kind of electronic equipment that carries the infrared receiving terminal of light-guiding pillar and have this infrared receiving terminal.
Background technology
In order to realize the Long-distance Control of the equipment such as TV, DVD, VTR, air-conditioning, on the casing of these equipment, need to install an infrared remote-controlled signal receiving element (being also infrared receiving terminal) to receive the infrared remote-controlled signal being sent from infrared remote-controlled signal transmitting elements such as infrared ray remote controllers (infrared remote controller).For the infrared remote-controlled signal that receiving infrared-ray remote controller sends effectively, the front of the infrared receiving terminal of the equipment such as common TV, DVD, VTR, air-conditioning is provided with light-guiding pillar, and this light-guiding pillar is the optical channel that infrared remote-controlled signal imports infrared receiving terminal into.
Figure 1 shows that infrared receiving terminal that existing liquid crystal TV set adopts and the structure of light-guiding pillar.As shown in Figure 1, liquid crystal TV set inside is provided with remote control reception plate 1, remote control reception plate 1 is connected with the face-piece 2 of liquid crystal TV set by securing member, this remote control reception plate 1 is provided with infrared receiving terminal 3, infrared receiving terminal 3 comprises support 3a, be located at the infrared radiation receiving circuit (not shown) on support 3a and encapsulate the packaging body of infrared radiation receiving circuit, and this packaging body is formed with hemispherical sensitive surface 3b.Light-guiding pillar 4 comprises column light guide section 4a and sheet support 4b, the support 4b of light-guiding pillar 4 is fixed on by securing member on the back side of face-piece 2, its light guide section 4a stretches into one end face-piece 2 and flushes with the front of face-piece 2, and its other end is aimed at the sensitive surface 3b of infrared receiving terminal 3.Based on this structure, can be sent to infrared receiving terminal 3 via light-guiding pillar 4 from the infrared remote-controlled signal of infrared remote controller.
But, because light-guiding pillar 4 is to be made up of materials such as such as PMMA of transparent plastic (polymethyl methacrylate), PC (Merlon) or AS (acrylonitritrile-styrene resin), and this class material from physical and chemical index be with category of glass seemingly, Fresnel optical principle is applicable to these three kinds of materials.Therefore, known based on wet your optical principle of phenanthrene, in the time that infrared remote-controlled signal enters from air the light-guiding pillar 4 of being made up of transparent plastic, its intensity has reduced 4%, otherwise, when the light-guiding pillar 4 of making from transparent plastic when infrared remote-controlled signal enters air, its intensity loses equally again 4%, when the infrared remote-controlled signal in gap passes to infrared receiving terminal 3 again, has reduced again 4%.In addition, light-guiding pillar 4 is to be fixedly mounted on face-piece by screw, glue nail or button bit by its support, and by light-guiding pillar 4 leaded light principles, support can sponge the portion of energy of conduction in light-guiding pillar 4, makes infrared remote-controlled signal further produce again loss.In addition,, owing to installing or design, easily there is deviation in the position between light-guiding pillar 4 and infrared receiving terminal 3, makes light-guiding pillar 4 not aim at the photodiode of infrared receiving terminal 3, causes infrared remote-controlled signal effectively not transmitted.For above-mentioned reasons, adopt the electronic equipment of existing infrared receiving terminal 3 and light-guiding pillar 4 easily to occur the problems such as remote control reception angle is inadequate, receiving sensitivity is low, receiving range shortens, its overall infrared receptivity is poor.
Given this, be necessary to provide a kind of electronic equipment that there is the infrared receiving terminal of better infrared receptivity and there is this infrared receiving terminal to solve the problems of the technologies described above.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of infrared receiving terminal that carries light-guiding pillar with more long-range remote control distance, larger remote control angle, better receptivity, and has the electronic equipment of more long-range remote control distance, larger remote control angle, better receptivity.
In order to address the above problem, the utility model provides a kind of infrared receiving terminal that carries light-guiding pillar, can be arranged in electronic equipment to receive the infrared remote-controlled signal from infrared remote controller, the face-piece of described electronic equipment is provided with first through hole corresponding with described infrared receiving terminal, described infrared receiving terminal comprises support and is located at the infrared radiation receiving circuit on support, this infrared receiving circuit comprises photodiode and signal amplification chip, on described support, one form has light-guiding pillar, described light-guiding pillar is aimed at described photodiode, described light-guiding pillar comprises a signal receiving end, described signal receiving end can stretch into the first through hole of described face-piece and its end face and the front of described face-piece and flush or protrude out the front of described face-piece.Infrared receiving terminal disclosed in the utility model due to one form has can the exposed light-guiding pillar in face-piece front, can reduce the loss of infrared remote-controlled signal transmittance process, can greatly improve its remote control reception performance.
Preferably, the junction of described light-guiding pillar and support forms limited step.
Preferably, described light-guiding pillar is strip structure, and its cross section is square, rectangle, circle or oval.
Preferably, the end face of the signal receiving end of described light-guiding pillar is flat surfaces, and this flat surfaces flushes with the front of described face-piece; Or the end face of the signal receiving end of described light-guiding pillar is the curved surface of convex lens shape, this curved surface just protrudes out the front of described face-piece completely.
In order to address the above problem, the utility model provides a kind of electronic equipment case that uses above-mentioned infrared receiving terminal, in described electronic equipment, be provided with remote control reception plate, described remote control reception plate is connected with the face-piece of described electronic equipment by securing member, described remote control reception plate is provided with the infrared receiving terminal that carries light-guiding pillar, the face-piece of described electronic equipment is provided with first through hole corresponding with described infrared receiving terminal, described infrared receiving terminal comprises support and is located at the infrared radiation receiving circuit on support, this infrared receiving circuit comprises photodiode and signal amplification chip, on described support, one form has light-guiding pillar, described light-guiding pillar is aimed at described photodiode, described light-guiding pillar comprises a signal receiving end, described signal receiving end stretches into the first through hole of described face-piece and its end face and the front of described face-piece and flushes or protrude out the front of described face-piece.
Preferably, be arranged with the limited post of hollow on described securing member, described limited post is placed between described remote control reception plate and described face-piece.
Preferably, on described remote control reception plate, be also provided with light-emitting diode, the face-piece of described electronic equipment is provided with second through hole corresponding with described light-emitting diode, described light-emitting diode is connected with described remote control reception plate by spacing shim, and described light-emitting diode stretches out described face-piece via described the second through hole or flushes with the front of described face-piece.
Preferably, the junction of described light-guiding pillar and support forms limited step.
Preferably, described light-guiding pillar is strip structure, and its cross section is square, rectangle, circle or oval.
Preferably, the end face of the signal receiving end of described light-guiding pillar is flat surfaces, and this flat surfaces flushes with the front of described face-piece; Or the end face of the signal receiving end of described light-guiding pillar is the curved surface of convex lens shape, this curved surface just protrudes out the front of described face-piece completely.
Compared with prior art, infrared receiving terminal provided by the utility model can the exposed light-guiding pillar in face-piece front owing to carrying, infrared remote-controlled signal directly passes to infrared radiation receiving circuit after entering light-guiding pillar, avoid infrared remote-controlled signal repeatedly to pass in and out different propagation mediums and produce power loss, because light-guiding pillar becomes the part of infrared receiving terminal, when installation without respectively install, simplify installation process and reduce costs, and avoid light-guiding pillar and infrared radiation receiving circuit to occur position deviation, therefore infrared remote-controlled signal can obtain more effectively transmitting, thereby can increase remote control reception angle, improve receiving sensitivity and increase receiving range, its overall infrared receptivity be improved significantly.Meanwhile, electronic equipment provided by the utility model is due to above-mentioned infrared receiving terminal being installed, thereby has good infrared receptivity (infrared remote control performance).
By following description also by reference to the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used for explaining embodiment of the present utility model.
Brief description of the drawings
Fig. 1 is the part-structure schematic diagram of available liquid crystal television set.
Fig. 2 is the structural representation of the first embodiment of the utility model infrared receiver.
Fig. 3 is another structural representation of infrared receiving terminal shown in Fig. 2.
Fig. 4 is the part-structure schematic diagram of the utility model electronic equipment.
Fig. 5 is the enlarged drawing of A part in electronic equipment shown in Fig. 4.
Fig. 6 is the schematic diagram that the Receiver of electronic equipment middle infrared (Mid-IR) shown in Fig. 4 carries out different angles remote-controlled test.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is clearly and completely described, in accompanying drawing, similarly assembly label represents similar assembly.Obviously, below be only the utility model part embodiment by the embodiment of description, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
It is interior to receive the infrared remote-controlled signal from infrared remote controller that the infrared receiving terminal that carries light-guiding pillar provided by the utility model can be arranged on electronic equipment, and electronic equipment wherein comprises that liquid crystal TV set, DVD player, air-conditioning etc. are designed with electric equipment or the electronic product of distant control function.
With reference to Fig. 2 to Fig. 3, it has shown an embodiment of the utility model infrared receiving terminal 10.In the present embodiment, infrared receiving terminal 10 comprises support 11, infrared radiation receiving circuit (not shown) and light-guiding pillar 12.Wherein, the support 11 of the present embodiment is rectangular block shape structure, and a side of described support 11 is provided with three pins, as shown in Figure 2, is from left to right respectively signal pins, grounding leg and supply pin.Described infrared radiation receiving circuit is arranged on the end face 11a of support 11, this infrared radiation receiving circuit comprises photodiode (sensor devices) and signal amplification chip, described support 11 and light-guiding pillar 12 are to be made up of epoxy resin disposal pouring, described light-guiding pillar 12 is rectangular column structure, light-guiding pillar 12 is formed on end face 11a and the encapsulation residence of support 11 and states infrared radiation receiving circuit and align (being also the center that the central shaft of light-guiding pillar 12 faces described photodiode) with its photodiode, light-guiding pillar 12 comprises a signal receiving end, the signal receiving end of this light-guiding pillar 12 can stretch in the face-piece 30 of electronic equipment, and the positive 30a that the end face of this signal receiving end (sensitive surface) 12a flushed or protruded out described face-piece 30 with the positive 30a of described face-piece 30 is to receive infrared remote-controlled signal, as shown in Figure 4.In the time that outside infrared remote controller sends infrared remote-controlled signal, this infrared remote-controlled signal directly passes to the photodiode on support 11 through light-guiding pillar 12, greatly reduces energy loss.
With reference to Fig. 4 to Fig. 5, the utility model also provides a kind of electronic equipment that receives infrared remote-controlled signal, in described electronic equipment, be provided with remote control reception plate 20, described remote control reception plate 20 is fixed on the back side 30b of face-piece 30 by multiple securing members 21, described remote control reception plate 20 is provided with infrared receiving terminal 10, on described face-piece 30, offer the first through hole corresponding to infrared receiving terminal 10, the light-guiding pillar 12 of infrared receiving terminal 10 stretches in the first through hole of face-piece 30, and the end face 12a of its signal receiving end and the positive 30a of described face-piece 30 flush or protrude out the positive 30a of described face-piece 30.
Preferably, at some embodiment, for example, in the present embodiment, the cross section of described light-guiding pillar 12 is circular, and the end face 12a of the signal receiving end of described light-guiding pillar 12 is the curved surface of convex lens shape, and this curved surface just protrudes out the positive 30a of described face-piece 30 completely.Based on above-mentioned design, can make the signal focus receiving on photodiode, further improve the receptivity of this infrared receiving terminal 10.Certainly, according to actual needs, also the end face 12a of the signal receiving end of light-guiding pillar 12 can be designed to flat surfaces, this flat surfaces can be designed to flush with the positive 30a of described face-piece 30.Through experiment test, under the same conditions, than the end face 12a design of flat surfaces, it is that the sphere of 0.3mm can make more than left and right receiving angle increases by 15 degree that the end face 12a of the signal receiving end of light-guiding pillar 12 is designed to height H.When the height H of the signal receiving end end face 12a of light-guiding pillar 12 is designed to 0.5mm sphere, in the distance of 6 meters, upper and lower, left and right receiving angle can reach 89 degree.Understandably, in other embodiment of the present utility model, the cross section of light-guiding pillar 12 can be designed to square, rectangle, ellipse or rectangle or other is suitable for other shape that infrared ray conducts, and meanwhile, the first through hole on face-piece 30 is also designed to corresponding shape.
In the infrared receiving terminal 10 of the present embodiment, support 11 is rectangular block shape structure, its end face 11a is rectangular surfaces, the length of this rectangular surfaces and width are all greater than the cross section of light-guiding pillar 12, when thereby light-guiding pillar 12 links together with support 11, this junction forms hierarchic structure, based on this structure, when installation, support 11 can play position-limiting action, makes light-guiding pillar 12a just extend into predeterminated position.
Install for convenient, at some embodiment, for example, in the present embodiment, each securing member 21 adopts tapping screw to realize, on each tapping screw, be arranged with the limited post 22 of hollow, the height (axial length) of limited post 22 is that the length that need stretch into face-piece 30 according to light-guiding pillar 12 designs, and remote control reception plate 20 is arranged on after face-piece 30, and described limited post 22 is placed between described remote control reception plate 20 and described face-piece 30.Based on this structural design, in the time that remote control reception plate 20 is installed, limited post 22 has limited the distance between remote control reception plate 20 and face-piece 30, makes the light-guiding pillar 12 on infrared receiving terminal 10 reach predeterminated position from the first through hole of face-piece 30.
In the present embodiment, on described remote control reception plate 20, be also provided with light-emitting diode 40 using the indicator light as electronic device works state, face-piece 30 is provided with second through hole corresponding with this light-emitting diode 40, described light-emitting diode 40 is connected with described remote control reception plate 20 by spacing shim 41, stretched into the second through hole of face-piece 30 by the padded light-emitting diode 40 of spacing shim 41, the end of this light-emitting diode 40 stretches out the positive 30a of face-piece 30 or flushes with the positive 30a of face-piece 30.Based on this structural design, light-emitting diode 40 is owing to being subject to stopping of face-piece 30, and its light sending only can penetrate forward, can not interfere with the infrared receiving terminal 10 that is positioned at its side, can further improve the receptivity of this infrared receiving terminal 10.
According to Fresnel optical principle, infrared receiving terminal 10 of the present utility model is owing to carrying light-guiding pillar 12 (embedding together), remote signal is directly passed to the sensor devices on infrared receiving terminal 10, can reduce the loss of infrared remote-controlled signal in transmittance process and receive blind spot.
Following data are at the signal receiving end end face 12a of light-guiding pillar 12, are designed to the sphere that height H is 0.3mm, different test results when adopting the utility model infrared receiving terminal 10 and adopt the outer wire terminal of two kinds of Different Red of existing structure shown in Fig. 1 for available liquid crystal television set are (except structure shown in Fig. 1 and Fig. 4, other structure and condition are all identical), concrete test is that the effective remote control distance during for different remote control angle compares.
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Table 1
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Table 2
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Table 3
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Table 4
Wherein, table 1 is liquid crystal TV set test result when indoor normal play image by day.Table 2 is the test result of liquid crystal TV set when indoor blue screen is without playing image by day.Table 3 is liquid crystal TV set test result when indoor normal play image at night.Table 4 is the test result of liquid crystal TV set when indoor blue screen is without playing image at night.Wherein the test environment in evening is: directly over liquid crystal TV set, there is one of 15W electricity-saving lamp at 1.5 meters of, and there is one of 15W electricity-saving lamp at right 30 1.5 meters of, degree top, and there is one of 15W electricity-saving lamp at front 25 1.5 meters of, degree top.
From the data of above table, compare existing infrared receiving terminal 3, adopt infrared receiving terminal 10 of the present utility model to there is following clear superiority: when positive remote control (infrared ray is along the transmitting of direction shown in D0 in Fig. 6), effectively receiving range has increased 143%-160%; While being offset the remote control angle of 30 degree to the right (infrared ray is along the transmitting of direction shown in D1 in Fig. 6), effectively receiving range has increased 115%-230%; While being offset the remote control angle of 30 degree left (infrared ray is along the transmitting of direction shown in D2 in Fig. 6), effectively receiving range has increased 200%-230%; While being offset the remote control angle of 45 degree to the right (infrared ray is along the transmitting of direction shown in D3 in Fig. 6), effectively receiving range has increased 100%-180%; While being offset the remote control angle of 45 degree left (infrared ray is along the transmitting of direction shown in D4 in Fig. 6), effectively receiving range has increased 90%-180%.In other test, when the signal receiving end end face 12a of light-guiding pillar 12 is designed to height H and is the sphere of 0.5mm, in the distance of 6 meters, upper and lower, left and right receiving angle also can reach 89 degree, and, along with increasing of sphere, its receiving range and receiving angle also can increase.Visible, infrared receiving terminal 10 of the present utility model has good performance based on special construction design, can meet the remote control requirement within the scope of TV watching under extreme condition.
As mentioned above, infrared receiving terminal provided by the utility model can the exposed light-guiding pillar in face-piece front owing to carrying, infrared remote-controlled signal directly passes to infrared radiation receiving circuit after entering light-guiding pillar, avoid infrared remote-controlled signal repeatedly to pass in and out different propagation mediums and produce power loss, because light-guiding pillar becomes the part of infrared receiving terminal, when installation without respectively install, simplify installation process and reduce costs, and avoid light-guiding pillar and infrared radiation receiving circuit to occur position deviation, therefore infrared remote-controlled signal can effectively be transmitted, thereby can increase remote control reception angle, improve receiving sensitivity and increase receiving range, its overall infrared receptivity be improved significantly.Meanwhile, electronic equipment provided by the utility model is due to above-mentioned infrared receiving terminal being installed, thereby has best infrared receptivity (infrared remote control performance).
In conjunction with most preferred embodiment, the utility model is described above, but the utility model is not limited to the embodiment of above announcement, and should contains the various amendments of carrying out according to essence of the present utility model, equivalent combinations.
Claims (10)
1. one kind carries the infrared receiving terminal of light-guiding pillar, can be arranged in electronic equipment to receive the infrared remote-controlled signal from infrared remote controller, the face-piece of described electronic equipment is provided with first through hole corresponding with described infrared receiving terminal, described infrared receiving terminal comprises support and is located at the infrared radiation receiving circuit on support, this infrared receiving circuit comprises photodiode and signal amplification chip, it is characterized in that: on described support, one form has light-guiding pillar, described light-guiding pillar is aimed at described photodiode, described light-guiding pillar comprises a signal receiving end, described signal receiving end can stretch into the first through hole of described face-piece and its end face and the front of described face-piece and flush or protrude out the front of described face-piece.
2. the infrared receiving terminal that carries light-guiding pillar as claimed in claim 1, is characterized in that: the junction of described light-guiding pillar and support forms limited step.
3. the infrared receiving terminal that carries light-guiding pillar as claimed in claim 1, is characterized in that: described light-guiding pillar is strip structure, and its cross section is square, rectangle, circle or oval.
4. the infrared receiving terminal that carries light-guiding pillar as described in claim 1-3 any one, is characterized in that: the end face of the signal receiving end of described light-guiding pillar is flat surfaces, this flat surfaces flushes with the front of described face-piece; Or the end face of the signal receiving end of described light-guiding pillar is the curved surface of convex lens shape, this curved surface just protrudes out the front of described face-piece completely.
5. one kind can receive the electronic equipment of infrared remote-controlled signal, in described electronic equipment, be provided with remote control reception plate, described remote control reception plate is connected with the face-piece of described electronic equipment by securing member, described remote control reception plate is provided with the infrared receiving terminal that carries light-guiding pillar, the face-piece of described electronic equipment is provided with first through hole corresponding with described infrared receiving terminal, described infrared receiving terminal comprises support and is located at the infrared radiation receiving circuit on support, this infrared receiving circuit comprises photodiode and signal amplification chip, it is characterized in that: on described support, one form has light-guiding pillar, described light-guiding pillar is aimed at described photodiode, described light-guiding pillar comprises a signal receiving end, described signal receiving end stretches into the first through hole of described face-piece and its end face and the front of described face-piece and flushes or protrude out the front of described face-piece.
6. electronic equipment as claimed in claim 5, is characterized in that: on described securing member, be arranged with the limited post of hollow, described limited post is placed between described remote control reception plate and described face-piece.
7. electronic equipment as claimed in claim 5, it is characterized in that: on described remote control reception plate, be also provided with light-emitting diode, the face-piece of described electronic equipment is provided with second through hole corresponding with described light-emitting diode, described light-emitting diode is connected with described remote control reception plate by spacing shim, and described light-emitting diode stretches out described face-piece via described the second through hole or flushes with the front of described face-piece.
8. electronic equipment as claimed in claim 5, is characterized in that: the junction of described light-guiding pillar and support forms limited step.
9. the electronic equipment as described in claim 5 any one, is characterized in that: described light-guiding pillar is strip structure, and its cross section is square, rectangle, circle or oval.
10. the electronic equipment as described in claim 5-9 any one, is characterized in that: the end face of the signal receiving end of described light-guiding pillar is flat surfaces, this flat surfaces flushes with the front of described face-piece; Or the end face of the signal receiving end of described light-guiding pillar is the curved surface of convex lens shape, this curved surface just protrudes out the front of described face-piece completely.
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| CN201420412636.2U CN204013849U (en) | 2014-07-24 | 2014-07-24 | Carry the infrared receiving terminal of light-guiding pillar and there is the electronic equipment of this Receiver |
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| CN201420412636.2U CN204013849U (en) | 2014-07-24 | 2014-07-24 | Carry the infrared receiving terminal of light-guiding pillar and there is the electronic equipment of this Receiver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507255A (en) * | 2014-12-25 | 2015-04-08 | 苏振球 | Infrared receiving plate with signal transmission window and manufacturing method of infrared receiving plate |
| CN105306847A (en) * | 2014-07-24 | 2016-02-03 | 苏振球 | Infrared receiving head with light pipe and electronic device with the receiving head |
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2014
- 2014-07-24 CN CN201420412636.2U patent/CN204013849U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306847A (en) * | 2014-07-24 | 2016-02-03 | 苏振球 | Infrared receiving head with light pipe and electronic device with the receiving head |
| CN104507255A (en) * | 2014-12-25 | 2015-04-08 | 苏振球 | Infrared receiving plate with signal transmission window and manufacturing method of infrared receiving plate |
| CN104507255B (en) * | 2014-12-25 | 2018-04-06 | 苏振球 | A kind of infrared receiver plate and its manufacture method from band signal pass-through box mouth |
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Effective date of registration: 20190219 Address after: 518000 Guangdong Province Baoan District Xixiang Street Taoyuan Community Aviation City Industrial Zone Fuxinlin Industrial Park D Building 5, 6 floors Patentee after: Shenzhen Lanfeng Technology Co., Ltd. Address before: 215400 Heping Xincun 2-157, Fuqiao Town, Taicang City, Suzhou City, Jiangsu Province Co-patentee before: Liu Rufeng Patentee before: Su Zhenqiu |