CN115150725A - Loudspeaker and electronic equipment - Google Patents
Loudspeaker and electronic equipment Download PDFInfo
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- CN115150725A CN115150725A CN202210755577.8A CN202210755577A CN115150725A CN 115150725 A CN115150725 A CN 115150725A CN 202210755577 A CN202210755577 A CN 202210755577A CN 115150725 A CN115150725 A CN 115150725A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 162
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 12
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- 241000238008 Cerithidea rhizophorarum Species 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000009123 feedback regulation Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
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- 241000220317 Rosa Species 0.000 description 1
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- 230000008094 contradictory effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a loudspeaker and electronic equipment, wherein the loudspeaker comprises: vibrating diaphragm; the heating component is used for raising the temperature of the diaphragm; the temperature sensing assembly is used for detecting the ambient temperature of the loudspeaker and outputting an ambient temperature detection signal; and the electric control assembly is respectively connected with the temperature sensing assembly and the heating assembly, and is used for controlling the heating assembly to increase the temperature of the vibrating diaphragm according to the environment temperature detection signal. The technical scheme of the invention can improve the sound effect and tone quality of the electronic equipment when the environmental temperature changes.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a loudspeaker and electronic equipment.
Background
At present, can adopt loudspeaker to realize the audio playback function to electronic equipment usually, but the inside vibrating diaphragm that is used for the vocal can receive electronic equipment ambient temperature around change's influence to make the performance of vibrating diaphragm reduce, thereby lead to electronic equipment's audio and tone quality relatively poor.
Disclosure of Invention
The invention mainly aims to provide a loudspeaker, and aims to solve the problem that the sound effect and the sound quality of electronic equipment are poor due to environmental temperature change.
In order to achieve the above object, the present invention provides a horn, comprising:
vibrating diaphragm;
the heating component is used for raising the temperature of the diaphragm;
the temperature sensing assembly is used for detecting the ambient temperature of the loudspeaker and outputting an ambient temperature detection signal; and (c) a second step of,
and the electric control assembly is connected with the temperature sensing assembly and the heating assembly respectively, and is used for controlling the heating assembly to increase the temperature of the vibrating diaphragm when the environment temperature of the loudspeaker is determined to be lower than a preset environment temperature threshold value according to the environment temperature detection signal.
Optionally, the horn further comprises:
the loudspeaker comprises a loudspeaker shell, a vibration diaphragm and a loudspeaker shell, wherein an installation cavity is formed in the inner wall of the loudspeaker shell, and the vibration diaphragm is installed in the installation cavity;
the heating assembly includes: the heating pipe comprises at least one heating pipe, wherein each heating pipe is provided with a first end and a second end which are opposite to each other, and the first end of each heating pipe is located in the installation cavity and is abutted to the inner wall of the horn shell.
Optionally, the first end of at least one of the heating tubes abuts an inner wall of the horn housing through an annular heat conducting layer.
Optionally, the electric control assembly is arranged on the annular heat conduction layer;
the electric control assembly is also used for detecting the temperature of the annular heat conduction layer and adjusting the heat productivity of each heating pipe according to the temperature of the annular heat conduction layer.
Optionally, the electronic control assembly comprises: at least one heating and regulating circuit, each of the heating and regulating circuits comprises:
the power supply interface is grounded through one heating pipe to form a series branch, and the power supply interface is used for outputting power supply voltage to the connected heating pipe;
and the temperature-sensing voltage regulator is arranged on the series branch and is used for detecting the temperature of the annular heat conduction layer and regulating the power supply voltage output to the connected heating pipes by the power supply interface according to the temperature of the annular heat conduction layer.
Optionally, each of the heating regulation circuits further comprises:
and the delay circuit is arranged on the series branch circuit and used for delaying the electrifying current in the power supply loop.
Optionally, each of the heating regulation circuits further comprises:
the over-temperature protection circuit is connected to the series branch and used for adjusting the power supply current on the series branch according to the temperature of the annular heat conduction layer.
Optionally, the horn housing includes a horn housing and a horn rear cover, and the horn housing and the horn rear cover enclose to form the mounting cavity;
at least one heating pipe penetrates through the rear cover of the horn, so that the second end of the heating pipe protrudes out of the rear cover of the horn or is flush with the rear cover of the horn.
Optionally, the horn housing has a first face facing away from a device housing of the electronic device;
the temperature sensing assembly comprises at least one temperature sensor, and each temperature sensor is arranged on the first surface of the horn shell.
The present invention also provides an electronic device, comprising:
the equipment shell is provided with a sound outlet hole; and the number of the first and second groups,
according to the loudspeaker, the loudspeaker is contained in the equipment shell and arranged corresponding to the sound outlet hole.
According to the technical scheme, the vibrating diaphragm, the heating assembly, the temperature sensing assembly and the electric control assembly are adopted, and after the temperature sensing assembly detects the environment temperature of the loudspeaker, an environment temperature detection signal is output to the electric control assembly, so that the electric control assembly can control the heating assembly to raise the temperature of the vibrating diaphragm when the environment temperature of the loudspeaker is determined to be lower than a preset environment temperature threshold value according to the environment temperature detection signal. The loudspeaker can increase the temperature of the vibrating diaphragm by integrating the vibrating diaphragm heating function when the electronic equipment is in a low-temperature environment, so that the compliance of the vibrating diaphragm in the low-temperature environment is improved, the rigidity and the F0 parameter are reduced, the low-frequency submergence of the loudspeaker and the increase of the intermediate-frequency valley frequency are facilitated, the noise of the intermediate sound is reduced, the sound quality is improved, and the problem that the sound effect and the sound quality of the electronic equipment are poor due to the change of the environment temperature is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic block diagram of a horn according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded structure of an embodiment of the horn of the present invention;
FIG. 3 is a schematic structural diagram of another embodiment of the horn of the present invention;
FIG. 4 is a schematic structural view of an annular heat conductive layer in yet another embodiment of the horn of the present invention;
FIG. 5 is a schematic circuit diagram of a heating regulating circuit according to yet another embodiment of the speaker of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, descriptions such as "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a loudspeaker which can be applied to electronic equipment such as wearable equipment.
The low frequency resonant frequency parameter of the horn, also known as the F0 parameter, is the natural resonant frequency of forced vibration, which reflects the response performance of the speaker to low frequency signals. The low frequency signal is the basic part of the sound, which is not easy to hear by human ears, but means that the amplitude of the diaphragm 10 of the loudspeaker is higher than the amplitude of the medium-high frequency, and the maximum amplitude is at F0, so the lower the F0 parameter of the loudspeaker is, the better the low frequency response is, and the sound played by the loudspeaker is full and smooth. However, the diaphragm 10 is greatly affected by the ambient temperature, so when the ambient temperature of the electronic device, especially the wearable device, becomes lower, the compliance of the diaphragm 10 is reduced, the F0 parameter and the internal loss (internal loss, which can be understood as mutual friction inside non-rigid substances, and also can be regarded as a friction coefficient) increase, and the low-frequency performance of the speaker is insufficient, so that the middle sound played by the speaker is noisy.
To solve the above problem, referring to fig. 1 to 4, in an embodiment, the horn 70 includes:
a diaphragm 10;
a heating assembly 20 for raising the temperature of the diaphragm 10;
a temperature sensing assembly 30 for detecting an ambient temperature of the horn 70 and outputting an ambient temperature detection signal; and the number of the first and second groups,
and the electronic control component 40 is respectively connected with the temperature sensing component 30 and the heating component 20, and the electronic control component 40 is used for controlling the heating component 20 to raise the temperature of the diaphragm 10 when determining that the ambient temperature of the loudspeaker 70 is lower than a preset ambient temperature threshold value according to the ambient temperature detection signal.
In this embodiment, the speaker 70 may further include a speaker body, and the diaphragm 10, the heating element 20, the temperature sensing element 30, and the electronic control element 40 may be disposed on the speaker body. The vibrating diaphragm 10 may be a cone vibrating diaphragm, a plastic cone vibrating diaphragm, a metal cone vibrating diaphragm, or a synthetic fiber cone vibrating diaphragm, and is used for vibrating and sounding to realize an audio playing function of the electronic device. It should be noted that the F0 parameter of the plastic cone diaphragm 10 is affected most by the temperature.
The heating assembly 20 may be implemented using a heating tube, a red heat heating device, or a liquid heating material. The heating component 20 may be directly abutted with the diaphragm 10, abutted with a mounting structure in the speaker body for supporting the diaphragm 10, facing the diaphragm 10 in the infrared light emitting direction, or coated on the diaphragm 10 or the mounting structure of the diaphragm 10. The heating assembly 20 may generate corresponding heat to heat the diaphragm 10 in a contact manner when the power supply voltage is applied, or may heat the diaphragm 10 in a non-contact manner by using a mounting structure or emitting infrared rays, so as to raise the temperature of the diaphragm 10. It can be understood that, when the heating component 20 performs non-contact heating on the diaphragm 10, the influence of the contact on the sound production of the diaphragm 10 can be avoided, which is beneficial to ensuring the sound production effect of the diaphragm 10.
The temperature sensing assembly 30 may be implemented by at least one temperature sensor, each temperature sensor may be configured to detect any one of the temperature of the speaker body, the temperature near the speaker body, the temperature of the diaphragm 10, the temperature near the diaphragm 10, and the temperature of the electronic device to which the speaker 70 is applied in real time, and may output one path of temperature detection signal, and each path of temperature detection signal constitutes an ambient temperature detection signal, thereby implementing detection of the ambient temperature of the speaker 70.
The electronic control assembly 40 may be connected to each temperature sensor in the temperature sensing assembly 30 and the power end of the heating assembly 20 through corresponding connecting wires, so as to access each temperature detection signal output by the temperature sensing assembly 30, and determine the current ambient temperature of the speaker body by performing corresponding signal processing and analysis on each temperature detection signal. The electronic control assembly 40 can determine whether the temperature of the vibrating diaphragm 10 needs to be raised according to the current ambient temperature, and can determine the temperature amplitude of the vibrating diaphragm 10 that needs to be raised when the determination result is that the temperature is needed; and the power supply voltage required by the heating component 20 can be further determined according to the temperature amplitude required to be increased, and the power supply voltage generating circuit preset in the heating component 20 can be controlled to operate according to the determination result to output the power supply voltage value of the corresponding magnitude to the heating component 20, so that the heating component 20 can increase the temperature of the diaphragm 10 until the electric control component 40 can determine that the temperature of the diaphragm 10 does not need to be increased according to the redetermined current environment temperature, and the operation is repeated in such a circulating way, and the temperature of the diaphragm 10 can be maintained to be constant in the low-temperature environment. In this embodiment, a preset environment temperature threshold may be set in the electronic control component 40, where the preset environment temperature threshold may represent a lowest temperature value at which the temperature of the diaphragm 10 does not need to be raised, and the electronic control component 40 may perform subtraction operation on the determined current environment temperature and the preset environment temperature threshold, so as to determine that the temperature of the diaphragm 10 needs to be raised when a difference between the two is smaller than the preset difference threshold, and determine a temperature amplitude at which the diaphragm 10 needs to be raised according to the difference between the two, where the preset difference threshold may be 0; when the difference between the two is not less than the preset difference threshold, it is determined that the temperature of the diaphragm 10 does not need to be raised, and the controllable heating assembly 20 does not operate.
Each temperature sensor in the temperature sensing assembly 30 can be arranged in different areas of the horn body, so that misjudgment of the electric control assembly 40 on the current environment temperature due to centralized setting can be effectively avoided, and the judgment accuracy of the current environment temperature can be improved. Of course, each temperature sensor in the temperature sensing assembly 30 can be further divided into two parts, one part, in another embodiment, the temperature sensing assembly 30 can also be realized by a temperature sensor pre-integrated with an electronic device or a wearable device, so that the occupied space of the temperature sensing assembly 30 in the speaker body can be saved, and the miniaturization design of the speaker 70 and the application in the electronic device, especially in an intelligent wearable device are facilitated.
So set up, loudspeaker 70 can be when electronic equipment is in low temperature environment, through the temperature that heating element 20 promoted vibrating diaphragm 10 to make vibrating diaphragm 10 improve in the compliance under low temperature environment, rigidity and F0 parameter descend, be favorable to the dive of loudspeaker 70 low frequency and the promotion of intermediate frequency valley frequency, and still be favorable to reducing the noisy and improvement tone quality of well sound, thereby solved the environmental temperature change to the relatively poor problem of electronic equipment audio and tone quality.
Referring to fig. 1 to 4, in an embodiment, the horn 70 further includes:
a horn housing 50, an installation cavity being formed on an inner wall of the horn housing, and the diaphragm 10 being installed in the installation cavity;
the heating assembly 20 includes: at least one heating tube, each of the heating tubes having opposite first and second ends;
the first end of each heating tube is located in the mounting cavity and abuts against the inner wall of the horn housing 50.
The diaphragm may abut against the inner wall of the horn housing 50 when mounted in the mounting cavity. In this embodiment, the heating pipes may be substantially cylindrical and may have opposite first and second ends, and the first end of each heating pipe is located in the mounting cavity and abuts against the inner wall of the horn housing 50, so as to achieve the purpose of rapidly increasing the temperature of the diaphragm 10 by heating the horn housing 50 under the control of the electronic control component 40. The number of the heating pipes may be determined according to actual needs, and is not limited herein, but it should be noted that, the larger the number of the heating pipes is, the higher the heating efficiency of the diaphragm 10 is, and the more uniform the temperature rise of the diaphragm 10 is. Therefore, when the number of the heating pipes is plural, the heating component 20 can rapidly raise the temperature of the diaphragm 10 when the working environment of the electronic device suddenly changes to a low-temperature environment, so as to effectively avoid the problem that the tone quality of the audio played by the electronic device suddenly decreases due to the sudden change of the working environment to the low-temperature environment, and further avoid the damage to the speaker 70 caused by the overhigh heat generated by a large number of heating pipes. In addition, according to the technical scheme of the invention, the vibrating diaphragm 10 is heated through the loudspeaker shell 50, and the vibrating diaphragm 10 does not need to be directly contacted, so that the normal sound production of the vibrating diaphragm 10 is not influenced.
Because set up too much heating pipe and can make loudspeaker 70 bulky, be unfavorable for electronic equipment, but especially the miniaturized design of intelligent wearing equipment, and still appear heating the too big condition that leads to loudspeaker 70 to damage and appear easily, therefore the quantity of heating pipe can be selected to two, is first heating pipe 21 and second heating pipe 22 respectively, can specifically refer to fig. 2 to fig. 4. The horn housing 50 may be divided into a left-part housing and a right-part housing along a central axis of a width direction thereof, and the first and second heating pipes 21 and 22 may be symmetrically disposed about the central axis of the width direction and may be respectively located in the left-part housing and the right-part housing, so that the left-part housing and the right-part housing may be simultaneously heated under the control of the electronic control assembly 40. So set up, can effectively reduce the holistic volume of loudspeaker 70 in the even heating vibrating diaphragm 10, be favorable to electronic equipment, but especially intelligent wearing equipment's miniaturized design, and still can reduce the heating capacity too big and damage loudspeaker 70's probability.
Referring to fig. 1-4, in one embodiment, the first end of at least one of the heating tubes abuts the inner wall of the horn housing 50 through an annular heat conductive layer 53.
In this embodiment, the annular heat conducting layer 53 may be connected to the inner wall of the horn housing 50. Or, annular heat-conducting layer 53 still can set up with loudspeaker casing 50 integrated into one piece to increase annular heat-conducting layer 53 and loudspeaker casing 50's stability of being connected, be favorable to improving the stability of this application scheme using in intelligent wearing equipment such as intelligent wrist-watch. The first end of at least one heating pipe can be abutted with the annular heat conduction layer 53, so that when the heating pipe generates heat, the heat is firstly conducted to the annular heat conduction layer 53, the temperature of the loudspeaker shell 50 is increased through the annular heat conduction layer 53, and the purpose of increasing the temperature of the vibrating diaphragm 10 is further achieved. According to the technical scheme of the invention, the annular heat conduction layer 53 is arranged, so that heat generated by each heating pipe can be more uniformly diffused to the loudspeaker shell 50, and the consistency of the loudspeaker shell 50 for heating the diaphragm 10 is favorably improved. In another alternative embodiment, when there are a plurality of heating pipes, the first ends of the plurality of heating pipes are respectively abutted against the inner wall of the horn housing 50 through the annular heat conductive layer 53 to improve the uniformity of the temperature rise of the annular heat conductive layer. In the embodiment shown in fig. 2 to 4, the first ends of the first heating pipe 21 and the second heating pipe 22 are respectively abutted against the inner wall of the horn housing 50 through the annular heat conductive layer 53.
Optionally, the electrical control assembly 40 is disposed on the annular heat conducting layer 53;
the electronic control component 40 is further configured to detect a temperature of the annular heat conduction layer 53, and adjust a heat generation amount of at least one of the heating pipes according to the temperature of the annular heat conduction layer 53.
In this embodiment, the electronic control component 40 can be directly disposed on the annular heat conducting layer 53 to control each heating pipe to generate heat, and simultaneously, perform temperature detection on the temperature of the annular heat conducting layer 53, and adjust the power supply voltage output to the corresponding heating pipe according to the detection result, thereby implementing automatic feedback adjustment on the heat generation amount of at least one heating pipe. The method specifically comprises the following steps: the electronic control component 40 may reduce the power supply voltage output to the corresponding heating pipe 22 when it is determined that the temperature of the annular heat conduction layer 53 is greater than the preset ambient temperature threshold, so as to reduce the heating value of the heating pipe; when the temperature of the annular heat conduction layer 53 is determined to be smaller than the preset environmental temperature threshold value, the power supply voltage output to the corresponding heating pipe is increased, so that the heating value of the heating pipe is increased; when the temperature of the annular heat conduction layer 53 is determined to be equal to the preset ambient temperature threshold value, the power supply voltage output to the corresponding heating pipe is maintained to maintain the heating value of the heating pipe.
According to the technical scheme, the automatic feedback adjusting function of the heating value is integrated in the electric control assembly 40, so that the problem that the horn 70 is damaged due to overhigh heating value of each heating pipe can be effectively solved; or the problem that the heating value of each heating pipe is too low to cause the temperature rise of the diaphragm 10 to be insufficient, and further the tone quality and the sound effect of the loudspeaker 70 are not improved sufficiently is avoided.
Optionally, the electronic control assembly 40 comprises: at least one heating and adjusting circuit 41, wherein each heating and adjusting circuit 41 includes:
the power supply interface 411 is grounded through one heating pipe to form a series branch, and the power supply interface 411 is used for outputting power supply voltage to the connected heating pipe;
and the temperature-sensitive voltage regulator 412 is arranged on the serial branch, and the temperature-sensitive voltage regulator 412 is used for detecting the temperature of the annular heat conduction layer 53 and regulating the power supply voltage output by the power supply interface 411 to the connected heating pipes according to the temperature of the annular heat conduction layer 53.
In this embodiment, the number of the heating adjustment circuits 41 may be the same as the number of the heating pipes. Each heating regulating circuit 41 can be connected to a heating tube, so as to realize the feedback regulation of the heating value of the connected heating tube. The heating tube may have a resistor 23, and two ends of the resistor 23 are the first end and the second end of the heating tube, and are respectively connected to the power supply interface 411 and the ground. The power supply interface 411 may be connected to a power management module in the electronic device, so as to access a power supply voltage output by the power management module and output the power supply voltage to a first end of the resistor 23 in the heating pipe, so that a voltage difference may be formed between two ends of the resistor 23 in the heating pipe, and a power supply current may be generated, so that the resistor 23 may implement a heating function of the heating pipe under the action of the power supply current. The heating value of the heating tube is proportional to the supply current flowing through the heating tube. In the embodiment shown in fig. 2 to 4, the number of the heating regulation circuits 41 is two, and the first heating pipe 21 and the second heating pipe 22 are respectively arranged on the serial branch of the two heating regulation circuits 41.
The temperature-sensitive voltage regulator 412 may be disposed between the heating tube and the power supply interface 411. The temperature-sensitive voltage regulator 412 can sense the temperature of the annular heat conduction layer 53 in real time, and can output the power supply voltage output by the power supply interface 411 to the heating pipes on the serial branch after performing corresponding voltage conversion according to the temperature of the annular heat conduction layer 53. Specifically, the temperature-sensitive voltage regulator 412 may compare the temperature of the annular heat conducting layer 53 with a preset ambient temperature threshold, and when the comparison result is smaller than the preset ambient temperature threshold, boost-convert the power supply voltage and output the power supply voltage to the heating pipes on the serial branch, so as to increase the power supply current flowing through the heating pipes; when the comparison result is larger than the comparison result, the power supply voltage is subjected to voltage reduction and conversion and then is output to the heating pipes on the series branch so as to reduce the power supply current flowing through the heating pipes; and when the comparison result is equal to the comparison result, directly outputting the power supply voltage to the heating pipes on the series branch so as to enable the power supply current flowing through the heating pipes to be unchanged. Therefore, the automatic feedback adjustment of the heating value of the heating pipe on the series branch can be realized.
Optionally, each of the heating adjustment circuits 41 further includes: and the delay circuit 413 is arranged on the series branch and used for delaying the electrifying current in the power supply loop.
In practical use of electronic devices, especially wearable devices, for example, a situation that an ambient temperature suddenly drops as a user transfers from a room with a higher temperature to a room with a lower temperature, etc. often occurs, at this time, a power-on current (a power supply current at a power-on stage) in the series branch is extremely large, and a heating value of a heating pipe on the series branch is also suddenly increased, which may not only damage the speaker 70, but also affect a wearing experience of the user. Aiming at the problem, the scheme of the application is provided with a delay circuit 413, and the delay circuit 413 can be realized by adopting a delay resistor RS; the delay circuit 413 may be connected in series between the heating tube and the temperature-sensitive voltage regulator 412 on the series branch, or between the heating tube and the ground on the series branch, which is not limited herein. The delay resistor RS can use its own large resistance value, and the delay power supply loop supplies large current at the power-on stage, so as to avoid the heat productivity of the heating pipe on the series branch increasing at the power-on stage, which is beneficial to improving the wearing experience of the user and the service life of the horn 70. In the embodiment shown in fig. 5, the delay circuit 413 includes a delay resistor RS and a first resistor R1 arranged in series.
Optionally, an over-temperature protection circuit 414, where the over-temperature protection circuit 414 is connected to the series branch, and the over-temperature protection circuit 414 is configured to adjust a supply current on the series branch according to the temperature of the annular heat conduction layer 53.
Each of the heating regulation circuits 41 further includes: the over-temperature protection circuit 414 is connected to the serial branch, and the over-temperature protection circuit 414 is configured to open when detecting that a current value of the supply current in the serial branch is greater than a preset current threshold value, so as to consume the supply current in the serial branch until the current value of the supply current in the serial branch is not greater than the preset current threshold value.
In this embodiment, the over-temperature protection circuit 414 may include a temperature sensitive diode D1 and an N-type transistor N1. The anode of the temperature sensitive diode D1 may be connected between the first heating pipe 21 or the second heating pipe 22 and the delay circuit 413, the cathode of the temperature sensitive diode D1 may be connected with the collector of the N-type triode N1, the base of the N-type triode N1 may be connected with the collector thereof, and the emitter may be grounded. The temperature sensitive diode D1 can correspondingly reduce the forward voltage drop of the temperature conductive layer 53 when the temperature of the annular heat conductive layer 53 rises, and is turned on when the temperature of the annular heat conductive layer 53 rises to be greater than a preset ambient temperature threshold value, so as to shunt the power supply current on the serial branch and output the power supply current to the N-type triode N1, so as to trigger the N-type triode N1 to be turned on and output the shunted power supply current to the ground. It can be understood that, after the N-type triode N1 shunts part of the supply current to the ground, the temperature of the annular heat conduction layer 53 decreases due to the decrease of the heat generation amount of the first heat generation pipe or the second heat generation pipe, until the heat generation amount decreases to be not greater than the preset ambient temperature threshold, the temperature sensitive diode D1 is recovered to be turned off.
By such arrangement, when the temperature of the annular heat conduction layer 53 is too high, the over-temperature protection circuit 414 can automatically reduce the supply current on the series branch to reduce the heat productivity of the heating pipe on the series branch, thereby realizing the automatic feedback adjustment of the heating pipe on the series branch. In addition, the over-temperature protection circuit 414 and the temperature-sensitive voltage regulator 412 form a two-stage temperature feedback regulation, which is beneficial to improving the compatibility of the temperature feedback regulation function of the electronic control component 40 compared to a single-stage temperature feedback regulation.
Referring to fig. 2 to 3, in an embodiment, the horn housing 50 includes a horn housing 51 and a horn rear cover 52, and the horn housing 51 and the horn rear cover 52 surround to form the mounting cavity;
at least one of the heating pipes penetrates through the rear bell 52, so that the second end of the heating pipe protrudes from the rear bell 52 or is flush with the rear bell 52.
The speaker housing 51 may have formed therein an installation chamber communicating with the outside through an installation opening, the installation chamber being used to install various functional components for implementing an audio playing function, such as the diaphragm 10; wherein the edge of the diaphragm 10 can be connected to the loudspeaker housing 51 by means of a corresponding mounting bracket. The horn rear cover 52 is detachably provided at the mounting opening of the mounting chamber to form a mounting cavity.
The second end of the at least one heating pipe may extend toward the rear bell 52 and may be disposed completely or partially through the rear bell 52. Since the rear horn cover 52 is located in the electronic equipment mounting cavity, when the heating tube generates heat, the second end can be used as a heat dissipation end to dissipate the heat at the second end through the rear horn cover 52 or directly into the electronic equipment mounting cavity, so as to dissipate the heat of the horn 70 by means of the heat sink in the electronic equipment mounting cavity or the equipment housing 60 of the electronic equipment. Like this, can appear at electronic equipment especially wearable equipment, for example when transferring to the circumstances that the ambient temperature suddenly rose such as the indoor of higher temperature from the indoor of lower temperature, in time dispel the heat to loudspeaker 70, be favorable to improving electronic equipment especially wearable equipment to dress use experience sense. In the embodiment shown in fig. 2 and 3, the second ends of the first heating pipe 21 and the second heating pipe 22 are protruded from the rear cover of the trumpet 70, so as to further improve the heat dissipation capability of the heating assembly 20.
Referring to fig. 3, in one embodiment, the horn housing 51 has a first face facing away from the device housing 60 of the electronic device;
the temperature sensing assembly 30 includes at least one temperature sensor, and each temperature sensor is disposed on a first surface of the horn housing 51.
The horn housing 51 has a first face facing away from the device case 60 and a first face facing the electronic device, wherein the second face is configured to abut against an inner side wall of the device case 60 when the horn 70 is mounted in a mounting cavity in the device case 60. Each temperature sensor can install respectively on first face in temperature sensing subassembly 30 to make temperature sensing subassembly 30 can detect the air temperature of installation cavity in equipment housing 60 as loudspeaker 70's ambient temperature, the actual operational environment of loudspeaker 70 more laminates, is favorable to improving loudspeaker 70 ambient temperature and detects accurate nature. In the embodiment shown in fig. 2 and 3, the number of the temperature sensors is two, which are the first temperature sensor 31 and the second temperature sensor 32, and the two temperature sensors can be separately disposed on two opposite sides in the length direction and can be symmetrically disposed along the central axis in the width direction, so that the linear distance between the first temperature sensor 31 and the second temperature sensor 32 is relatively long, which is beneficial to improving the accuracy of the ambient temperature detection compared with the centralized arrangement.
Referring to fig. 6, the electronic device includes a device housing 60 and a speaker 70, and the specific structure of the speaker 70 refers to the above embodiments, and since the electronic device adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not repeated herein. Wherein the horn 70 is housed in the device housing 60.
In this embodiment, the electronic device may be a wearable smart device such as a smart watch. The device housing 60 may include a device housing and a device rear cover, the device housing and the device rear cover enclose a mounting cavity, and the speaker 70 may be mounted in the mounting cavity of the device housing 60. The device housing may further have sound holes 61 corresponding to the speaker 70 to improve the audio playing effect of the speaker 70.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A horn, comprising:
vibrating diaphragm;
the heating component is used for raising the temperature of the diaphragm;
the temperature sensing assembly is used for detecting the ambient temperature of the loudspeaker and outputting an ambient temperature detection signal; and the number of the first and second groups,
and the electric control assembly is connected with the temperature sensing assembly and the heating assembly respectively, and is used for controlling the heating assembly to increase the temperature of the vibrating diaphragm when the environment temperature of the loudspeaker is determined to be lower than a preset environment temperature threshold value according to the environment temperature detection signal.
2. The horn of claim 1, further comprising:
the loudspeaker comprises a loudspeaker shell, a vibration diaphragm and a loudspeaker shell, wherein an installation cavity is formed in the inner wall of the loudspeaker shell, and the vibration diaphragm is installed in the installation cavity;
the heating assembly includes: the heating pipe comprises at least one heating pipe, wherein each heating pipe is provided with a first end and a second end which are opposite to each other, and the first end of each heating pipe is located in the installation cavity and is abutted to the inner wall of the horn shell.
3. The horn of claim 2, wherein the first end of at least one of the heat pipes abuts an inner wall of the horn housing through an annular heat conductive layer.
4. The horn of claim 3, wherein said electrical control assembly is disposed in said annular heat conductive layer;
the electric control assembly is also used for detecting the temperature of the annular heat conduction layer and adjusting the heat productivity of at least one heating pipe according to the temperature of the annular heat conduction layer.
5. The horn of claim 4, wherein the electrical control assembly comprises: at least one heating and regulating circuit, each of which comprises:
the power supply interface is grounded through one heating pipe to form a series branch, and the power supply interface is used for outputting power supply voltage to the connected heating pipe;
and the temperature-sensing voltage regulator is arranged on the series branch and is used for detecting the temperature of the annular heat conduction layer and regulating the power supply voltage output to the connected heating pipes by the power supply interface according to the temperature of the annular heat conduction layer.
6. The horn of claim 5, wherein each of said heating and conditioning circuits further comprises:
and the delay circuit is arranged on the series branch circuit and is used for delaying the electrifying current in the power supply loop.
7. The horn of claim 5, wherein each of said heating and conditioning circuits further comprises:
the over-temperature protection circuit is connected to the series branch and used for adjusting the power supply current on the series branch according to the temperature of the annular heat conduction layer.
8. The horn of claim 2, wherein the horn housing comprises a horn housing and a horn rear cover, the horn housing and the horn rear cover enclosing to form the mounting cavity;
at least one heating pipe penetrates through the rear cover of the horn, so that the second end of the heating pipe protrudes out of the rear cover of the horn or is flush with the rear cover of the horn.
9. The horn of claim 1, wherein the horn housing has a first face facing away from a device housing of the electronic device;
the temperature sensing assembly comprises at least one temperature sensor, and each temperature sensor is arranged on the first surface of the horn shell.
10. An electronic device, characterized in that the electronic device comprises:
the equipment shell is provided with a sound outlet hole; and (c) a second step of,
the speaker of any one of claims 1-9, said speaker being housed in said device housing and disposed in correspondence with said sound outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210755577.8A CN115150725A (en) | 2022-06-29 | 2022-06-29 | Loudspeaker and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210755577.8A CN115150725A (en) | 2022-06-29 | 2022-06-29 | Loudspeaker and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115150725A true CN115150725A (en) | 2022-10-04 |
Family
ID=83410642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210755577.8A Pending CN115150725A (en) | 2022-06-29 | 2022-06-29 | Loudspeaker and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115150725A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620399A (en) * | 1979-07-27 | 1981-02-25 | Sony Corp | Loudspeaker unit |
| US20150263684A1 (en) * | 2014-03-14 | 2015-09-17 | Realtek Semiconductor Corp. | Speaker Temperature Controller and Method Thereof |
| US20160105746A1 (en) * | 2014-10-10 | 2016-04-14 | Analog Devices A/S | Overheat protector and protection methodology for electrodynamic loudspeakers |
| CN108167230A (en) * | 2017-12-19 | 2018-06-15 | 佛山市威灵洗涤电机制造有限公司 | Heat pump and washing electric appliance |
| CN113365188A (en) * | 2020-03-04 | 2021-09-07 | 北京小米移动软件有限公司 | Speaker control method, speaker control device, and storage medium |
| CN113727248A (en) * | 2020-05-26 | 2021-11-30 | 北京小米移动软件有限公司 | Method, device and medium for playing audio by loudspeaker |
-
2022
- 2022-06-29 CN CN202210755577.8A patent/CN115150725A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620399A (en) * | 1979-07-27 | 1981-02-25 | Sony Corp | Loudspeaker unit |
| US20150263684A1 (en) * | 2014-03-14 | 2015-09-17 | Realtek Semiconductor Corp. | Speaker Temperature Controller and Method Thereof |
| US20160105746A1 (en) * | 2014-10-10 | 2016-04-14 | Analog Devices A/S | Overheat protector and protection methodology for electrodynamic loudspeakers |
| CN108167230A (en) * | 2017-12-19 | 2018-06-15 | 佛山市威灵洗涤电机制造有限公司 | Heat pump and washing electric appliance |
| CN113365188A (en) * | 2020-03-04 | 2021-09-07 | 北京小米移动软件有限公司 | Speaker control method, speaker control device, and storage medium |
| CN113727248A (en) * | 2020-05-26 | 2021-11-30 | 北京小米移动软件有限公司 | Method, device and medium for playing audio by loudspeaker |
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