JP2822207B2 - Wireless transceiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wireless transceiver used as a portable telephone or a vehicle-mounted telephone.

B. Summary of the Invention The present invention is a wireless transceiver having a handset that is detachably attached to the equipment body containing the cooling device,
When the transceiver is attached to or detached from the equipment body, the air intake section is provided in the area where the transceiver or the finger that performs the operation of attaching and detaching the transceiver contacts the air intake section every time the transceiver is attached to or detached from the equipment body. This is to remove dust adhering.

C. Prior Art Conventionally, a wireless transceiver that transmits an information signal such as a voice signal input to a transmitter, receives the transmitted information signal, and outputs the information signal from a receiver has been used.

The wireless transceiver is used as a portable telephone or a vehicle-mounted telephone that transmits and receives information signals via a telephone exchange. The wireless transceiver used as a telephone in this way is composed of a device main body, which is a so-called cradle portion, and a handset, which is a so-called handset portion, which is detachably attached to the device main body.

The handset has a microphone device and a speaker device, and is formed in such a size that a user of the transceiver can face the microphone device near the mouth and the speaker device near the pinna.

The device main body is provided with a housing configured so that the handset can be detachably held outside. The device main body has a transmission circuit that performs predetermined signal processing on an information signal supplied from a microphone device of a handset via a signal cable and generates a transmission signal to be transmitted to a specific destination via an antenna device. doing. Further, the device body receives a transmission signal transmitted from the telephone exchange via the antenna device, performs predetermined signal processing on the received signal,
It has a receiving circuit for sending to a speaker device of a handset via a signal cable.

By the way, the device main body has an amplifier circuit that amplifies a transmission signal and amplifies a reception signal. The amplifier circuit is a circuit including a power transistor, a power IC, and the like, and generates a large amount of heat when driven. When the temperature of the amplifier circuit becomes higher than a predetermined temperature, the signal amplification operation is impaired. Further, when the temperature in the housing rises to a predetermined temperature or higher, there is a possibility that other electric circuits built in the housing may not be able to perform a predetermined operation, and may be damaged.

In order to solve such a problem, the wireless transceiver radiates heat from the amplification path to the outside of the device main body so that the temperature of the circuit such as the amplification circuit and the housing does not rise to a predetermined temperature or more. Therefore, a cooling fan device for heat radiation is provided. The cooling fan device draws in external air from an air intake portion provided in the housing, and discharges air in the housing to the outside from an air discharge portion provided in the housing. By ventilating the inside of the housing in this way, the inside of the housing is cooled.

The air intake section includes an air intake formed by an opening having a predetermined size, and a dustproof net attached to cover the air intake. When air enters the housing by the cooling fan device, dust or the like enters the housing and adheres to various devices and electric circuits disposed in the housing, which hinders a predetermined operation. Try to prevent.

D. Problems to be Solved by the Invention In the above-described wireless transceiver, the external air is sucked through the dustproof net when the external air is sucked into the device body by the cooling fan device. Dust and the like contained therein adhere to the dustproof net, and the dustproof net causes clogging. In particular, wireless transceivers used in vehicles may be used in an atmosphere containing a large amount of dust, and a large amount of dust adheres to the dust-proof net in a short period of time, so that the dust-proof net can be easily clogged. Will be generated.

If a large amount of dust adheres to the dust-proof net, the flow rate of air decreases, so that the cooling fan device cannot take in external air sufficiently and cannot sufficiently cool the inside of the housing.

Therefore, the present invention is proposed in view of the above-described situation, and reduces the flow rate of air taken in by the cooling fan device even when used in an atmosphere containing a large amount of dust. It is an object of the present invention to provide a wireless transceiver capable of preventing the transmission and reception and capable of satisfactorily cooling the inside of the device body.

E. Means for solving the problem In order to solve the above-mentioned problem and achieve the above object,
A wireless transceiver according to the present invention includes a device main body containing a heating element and a cooling device for radiating heat generated from the heating element, and a handset detachably attached to the device main body. A handset holding section for holding at least a part of the handset is provided in the main body of the apparatus, and an air intake section is provided in a portion of the handset holding section in which a part of the transceiver is slidably contacted.

Further, the wireless transceiver according to the present invention is provided with an operation unit operated by manual operation on the device main body, and an air intake unit is provided at a position where the finger slides when operating the operation unit with a finger. It was done.

F. Action The wireless transceiver according to the present invention is such that the air intake unit is slid by a finger performing the attachment / detachment operation of the transceiver or the transceiver each time the transceiver is attached / detached to / from the device body,
The dust attached to the air intake is removed.

G. Examples Hereinafter, specific examples of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the wireless transceiver according to the present invention includes a device main body 1 which is a so-called cradle unit,
A transmitter / receiver 2 which is a so-called handset unit detachably attached to the device main body 1 is provided.

The handset 2 has a handset main unit 3 having a sending unit 3a and a receiving unit 3b provided at both ends of a holding unit 3c held by a finger. The transmitter / receiver main body 3 is formed in a size that allows the transmitter 3a to face near the mouth and the receiver 3b to face near the pinna. A plurality of through holes for allowing sound to pass therethrough are formed in portions of the transmitting unit 3a and the receiving unit 3b facing the vicinity of the mouth and the vicinity of the pinna, respectively.

The microphone unit 4 is accommodated in the transmitting unit 3a of the transmitter / receiver body 3, and the speaker device 5 is disposed in the receiving unit 3b. An information signal transmitted from the microphone device 4 or supplied to the speaker device 5 is transmitted / received to / from the device main body 1 via the signal cable 6. An input device 7 for selecting a transmission destination of a transmission signal and selecting an operation mode is provided in the grip unit 3c. The input device 7 has a signal processing circuit (CPU) and a plurality of push buttons facing outside the grip 3c. A signal such as a control signal output from the input device 7 is transmitted to the device main body 1 via the signal cable 6.

The device main body 1 includes a housing 8 formed by joining an upper half 9 and a lower half 10 to each other. A chassis 11 is provided in the housing 8 and is supported by the upper and lower halves 9 and 10. The chassis 11 is integrally formed by an aluminum die cast made by casting a metal such as aluminum.

On each of the upper and lower surfaces of the chassis 11, as shown in FIG.
First and second printed circuit boards 12, 13 are mounted. These printed circuit boards 12 and 13 are mounted with electronic elements constituting a control circuit element (CPU), an A / D converter, an A / D converter, a storage circuit (RAM, ROM), a detection element, and the like. Is provided. That is, on the printed circuit boards 12 and 13, the voice input to the microphone device 4 is converted into a transmission signal that can be transmitted from the antenna device 14a, and the reception signal transmitted from the telephone exchange and received by the antenna devices 14a and 14b. A receiving circuit or the like that performs predetermined signal processing on the signal and supplies the signal to the speaker device 5 via the signal cable 6 is configured.

Also, on the second printed circuit board 13, while amplifying the transmission signals transmitted from the antenna devices 14a and 14b,
An output circuit 15 for amplifying an audio signal supplied to the speaker device 5 is provided. The output circuit 15 has a power transistor, a power IC, and the like, and is a heating element that generates heat when driven. As shown in FIG. 1, the output circuit 15 is provided on the second printed circuit board 13 on which the output circuit 15 is formed.
Heat dissipating member 15 for conducting heat from chassis 11 to chassis 11
a is attached. The heat radiating member 15a is formed of a material having high thermal conductivity, and is attached so as to be in contact with the housing portion of the output circuit 15 and the chassis 11.

A cooling fan device 16 is attached to the chassis 11 so that heat generated from the output circuit 15 is radiated to the outside from the inside of the housing 8 to prevent the temperature inside the output circuit 15 and the inside of the housing 8 from rising. The cooling fan device 16 includes, as shown in FIG.
A base 17 supported by the chassis 11, a drive motor 18 attached to the base 17, and a drive shaft 18 of the drive motor 18
and a fan 19 attached to a. This fan 1
Reference numeral 9 denotes a so-called sirocco fan in which a plurality of fins 19b are radiated on one surface of a disk-shaped substrate 19a pivotally supported by a drive shaft 18a.

As shown in FIGS. 3 and 4, a cooling fan mounting portion 20 is provided at one end of the chassis 11. The cooling fan mounting portion 20 has a peripheral wall 21 projecting from the lower surface of the chassis 11 so as to surround the base 17. As shown in FIG. 4, a pair of outlets is provided on both sides of the cooling fan mounting portion 20.
22,23 are formed. And the peripheral wall 21 of the chassis 11
A suction port 24 is formed at the center of the portion surrounded by. The cooling fan device 16 has a base 17 on the lower end side of the peripheral wall 21.
The periphery of the upper surface is press-fitted via a sealing member 25 made of an elastic material such as rubber. That is, the inside of the peripheral wall 21 is shielded by the base 17, and is isolated from a portion where the output circuit 15 and the like are mounted.

Then, as shown in FIG. 4, the discharge ports 22 and 2 are provided on both sides of one end of the upper half 9 constituting the housing 8 of the device body 1.
Air discharge units 31 and 32 are provided to face 3.
As shown by an arrow A in FIG.
External air is sucked from the suction hole 24 through an air intake portion 30 provided from one end of the upper half 9 to one end of the upper surface, and as shown by an arrow B in FIG. The air is exhausted from each of the air discharge units 31 and 32 via the.

The air intake section 30 includes an opening 30a and a dustproof net 30b formed in a net shape from a thin metal plate and arranged in the opening 30a. When the cooling fan device 16 sucks air into the housing 8, dust or the like enters the housing 8 and adheres to various mechanisms and electronic circuits arranged in the housing 8 to attach the air intake unit 30 to the air intake unit 30. Operation should not be disturbed.

Dust-proof nets 26 and 27 formed in a net shape from a thin metal plate are attached to the pair of outlets 22 and 23, respectively. Discharge part sealing members 28 and 29 formed in a ring shape from an elastic material such as rubber are provided between the periphery of the pair of discharge ports 22 and 23 and the periphery of each of the air discharge parts 31 and 32. Have been. These discharge part sealing members 28 and 29 are attached around a pair of discharge ports 22 and 23 and are pressed against the air discharge parts 31 and 32. That is, all the air discharged from the respective outlets 22 and 23 is discharged to the outside of the housing 8 through the respective air outlets 31 and 32, and is prevented from flowing back into the housing 8.

By ventilating the inside of the cooling fan mounting portion 20 in this manner, one end of the chassis 11 is cooled, and the output circuit 15 is cooled.
Is dissipated to the outside of the device body 1.

In addition, the cooling fan device 16 is configured such that the operation and the stop are controlled by a temperature detection device provided in the housing 8, and when the temperature of the housing 8 becomes higher than a predetermined temperature. Is activated.

The upper half 9 is configured so that the handset 2 can be detachably held on the upper surface side.

In other words, on one end side and the other end side of the upper half 9, a concave receiving section holding section 9b and a transmitting section holding section 9a which are held so that the receiving section 3b and the transmitting section 3a are fitted respectively. Is provided. Then, on the bottom surface of the receiver holding portion 9b,
A part of the air intake 30 is located. The bottom surface of the receiver holding portion 9b is slid by the receiver 3b when the handset 2 is attached to and detached from the device body 1.

A lock lever 33 is provided on the other end of the upper half 9 as shown in FIG. The lock lever 33 is formed in an L-shape. One end of the lock lever 33 is formed as an operated piece 33c, the other end is formed as a connecting piece 33d, and the connecting portion between the operated piece 33c and the connecting piece 33d is formed as an upper half 9. Spindle 3 provided inside
3a, and is attached so as to be rotatable around the support shaft 33a. At the tip of the connecting piece 33d, there is provided a lock portion 33b bent in the opposite direction to the operated piece 33c. The lock portion 33b faces outward through a through hole 34 formed in the transmission portion holding portion 9a. The through hole 34 is formed at a position corresponding to the engagement hole 35 provided on the side surface of the transmitting section 3a on the grip section 3c side. Further, the lock lever 33 is provided with a fifth arm 36c on the other side of a lock lever urging spring 36 composed of a torsion coil spring in which the coil portion 36a and the one arm portion 36b are locked in the upper half 9. The lock portion 33b in the direction of arrow C in the figure is urged to rotate in a direction protruding outward from the through hole.

Inside the upper half 9, a lock lever operation lever 37 is provided. The lock lever operating lever 37 is formed in an L-shape and has one end as an operation piece 37a and the other end as a pressing
7c, a connecting portion between the operation piece 37a and the pressing operation portion 37c is supported by a support shaft 37b provided in the upper half 9, and is attached rotatably about the support shaft 37b. The lock lever operation lever 37 causes the pressing operation portion 37c to face outward through the 38 formed on the side surface of the upper half 9, and makes the operation piece 37a contact the upper surface of the operated piece 33c of the lock lever 33. Let me. That is, by pressing the pressing operation portion 37c with a finger and rotating the lock lever operation lever 37 in the direction of arrow D in FIG.
Is rotated in the direction of arrow E in FIG. 5 against the urging force of the lock lever urging spring.

Further, on the bottom surface of the transmitter holding section 9a, a transmitter / receiver push-up member 39 is supported via a through hole 40 so as to be able to protrude and retract within a predetermined range. The handset push-up member 39 is urged by the other end of the compression coil spring 41 whose one end is locked in the upper half 9 in a direction protruding from the through hole 40 in the direction of arrow F in FIG.

A fitting protrusion 43 is provided on the inner side of the receiver holding portion 9b so as to correspond to the fitting recess 42 provided on the side surface of the receiver 8b on the grip 3c side.

To hold the handset 2 in the upper half 9 configured as described above, the fitting convex part 43 is fitted into the fitting concave part 42 of the receiving part 3b, and the transmitting part 3a is connected to the transmitting part holding part 9a. And push it in. Then, the lock portion 33b is pressed by the transmission portion 3a, and the lock lever 33 is rotated against the urging force of the lock lever urging spring. Further, the handset push-up member 39 is pushed in the direction of arrow G in FIG. 5 and is immersed in the through hole 40 against the urging force of the compression coil spring 41. When the transmitting section 3a is inserted into the transmitting section holding section 9a until the engaging hole 35 corresponds to the through hole 34, the lock lever 33 is moved to the lock lever biasing spring.
The rotation is returned by the urging force of 36, and the lock portion 33b is
5 and the handset 2 is held by the upper half 9.

Then, to remove the handset 2 from the upper half 9,
When the pressing operation portion 37c is pressed to rotate the lock lever 33 against the urging force of the lock lever urging spring 36, the engagement between the lock portion 33b and the engagement hole 35 is released. At this time, the handset push-up member 39 is protruded from the through hole 40 by the urging force of the compression coil spring 41 to push up the sending unit 3a, thereby separating the handset 2 from the upper half 9.

In addition, the transmitting unit holding unit 9a and the receiving unit holding unit of the upper half 9
In the part between 9b, that is, the part facing the grip part 3c,
An extension device mounting portion 44 is provided so that a function extension device such as an auxiliary battery device or an extension module device (not shown) can be detachably attached. This extension device mounting part 44
On the other end side, an expansion device holding claw 45 for holding each function expansion device is attached to the upper half 9 so as to be freely retractable.

In the wireless transceiver according to the present invention configured as described above, when the detachable operation is performed on the upper half 9 of the handset 2, the dustproof net 30b of the air intake unit 30 is slid by the receiver 3b and cleaned. Accordingly, dust and the like are prevented from adhering and accumulating on the dust-proof net 30b, clogging of the dust-proof net 30b with dust is prevented, and the airflow passing through the dust-proof net 30b is not regulated. Therefore, the cooling fan device
According to 16, a good cooling effect can always be obtained.

In this wireless transceiver, a cooling fan device
The air taken in from the air intake unit 30 by 16 passes through the vicinity of the handset 2 and reaches the air intake unit 30, so that the handset 2 can be cooled by the air reaching the air intake unit 30.

Further, the wireless transceiver according to the present invention is not limited to the above-described embodiment, and as shown in FIG. 6, an opening is provided at an operation unit such as a pressing operation unit 37c which is manually operated or in the vicinity of the operation unit. The air intake unit 30 may be provided on the operation unit such as the pressing operation unit 37c or near the operation unit.
When the air intake unit 30 is provided on or near the operation unit such as the pressing operation unit 37c as described above, the cooling fan device 16 can easily suck the outside air through the air intake unit 30. , So as to be located near the operation unit. That is, the cooling fan mounting portion 20 is provided at a position near the operation portion of the chassis 11, and the cooling fan mounting portion 20 is provided.
The cooling fan device 16 is attached to 20.

In this case, when attaching and detaching the handset 2 to and from the half 9, the dust-proof net 30 b of the air intake unit 30 is slid by hand and cleaned. Therefore, dustproof net
The clogging of the 30b with dust is prevented, and the airflow passing through the dustproof net 30b is not regulated. Therefore, the cooling fan device 16 can always obtain a good cooling effect.

Note that the cooling fan device is not limited to the one using the sirocco fan as shown in the above-described embodiment,
It is good also as what uses fans of other various shapes.

H. Effects of the Invention As described above, the wireless transceiver according to the present invention includes an air intake unit in a portion where a transceiver or a finger performing a detachment operation of the transceiver comes into contact when the transceiver is attached to or detached from the device body. Since the dust adhering to the air intake unit is removed each time the transceiver is attached to or detached from the device main body by providing the air intake unit, the air flow in the air intake unit into which the outside air is taken in by the cooling fan device is regulated. This can be prevented, and the inside of the device main body can be cooled well.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a wireless transceiver according to the present invention, and FIG. 2 is a perspective view showing the wireless transceiver.
FIG. 3 is a vertical sectional view of a main part showing a cooling fan device of the wireless transceiver, FIG. 4 is a horizontal sectional view of a main part showing a cooling fan device of the wireless transceiver, and FIG. It is a principal part perspective view which shows the part holding the handset of a radio | wireless transceiver. FIG. 6 is a main part plan view showing another example of the configuration of the transceiver according to the present invention. 1 ... main body 2 ... handset 3a ... transmission unit 3b ... reception unit 9a ... transmission unit holding unit 9b ... reception unit holding unit 16 ... cooling fan device 30 ... air intake unit 30b ... … Dustproof net 37c …… Pressing operation part

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akira Todo 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (56) References Japanese Utility Model Reference Sho 64-30947 (JP, U) (58) Surveyed fields (Int.Cl. ⁶ , DB name) H04B 1/38-1/58 H04M 1/02-1/23

Claims (2)

(57) [Claims] An apparatus main body containing a heating element and a cooling device for radiating heat generated from the heating element, and a handset detachably attached to the apparatus main body, wherein the apparatus main body includes A wireless transmitter / receiver, comprising: a handset holding unit for holding at least a part of a handset; and an air intake unit provided in a part of the handset holding unit in which a part of the transceiver slidably contacts. 2. An apparatus main body containing a heating element and a cooling device for radiating heat generated from the heating element, and a handset detachably attached to the apparatus main body. A wireless transceiver, comprising: an operation unit operated by an operation; and an air intake unit provided at a position where the finger slides when the operation unit is operated by a finger.