CN201004321Y

CN201004321Y - Portable DVD with heat radiation function

Info

Publication number: CN201004321Y
Application number: CNU2007201184811U
Authority: CN
Inventors: 陈伟松
Original assignee: SHENZHEN SKY DRAGON AUDIOVISUAL TECH Co Ltd
Current assignee: SHENZHEN SKY DRAGON AUDIOVISUAL TECH Co Ltd
Priority date: 2007-02-06
Filing date: 2007-02-06
Publication date: 2008-01-09
Anticipated expiration: 2017-02-06

Abstract

The utility model discloses a portable DVD machine which is able to radiate the heat, mainly consisting of a shell, an audio-video decoder and a DVD reading mechanism which are arranged inside the shell and an integrated circuit board where a micro-controller is arranged. The integrated circuit board is arranged under the DVD reading mechanism and the audio-video decoder and the micro-controller are arranged under the integrated circuit board. Compared with the present DVD machine, the utility model has the advantages of small power consumption, good achievement in heat radiation, long service period, etc.

Description

Portable DVD player machine with heat sinking function

Technical field:

The utility model relates to a kind of DVD player, relates in particular to a kind of portable DVD player machine with heat sinking function.

Background technology:

What existing DVD player generally adopted is radium-shine laser head movement, the working temperature of this movement can not be above 65 ℃ according to the rules, and the power consumption of master chip and chip periphery can change into heat substantially in existing DVD player, these heats just need distribute, but the space is very little in the existing DVD player machine, and can't ventilation and heat, when environment temperature is 25 ℃, after the DVD player work two hours, the temperature in the machine will be above 65 ℃.Will cause movement to read the dish ability like this, shorten serviceable life.

Summary of the invention:

In order to solve the problem of existing DVD player internal heat dissipating ability, the purpose of this utility model is to provide a kind of portable DVD player machine with heat sinking function.

The utility model is achieved through the following technical solutions: a kind of portable DVD player machine with heat sinking function, by casing, be installed in the surface-mounted integrated circuit that DVD in the casing reads disc mechanism and audio/video decoder and microcontroller place and constitute, described surface-mounted integrated circuit is installed in the downside that DVD reads disc mechanism, and described audio/video decoder and microcontroller are positioned at the bottom of surface-mounted integrated circuit.

Described DVD reads disc mechanism and is made up of motor, laser reading head and driving circuit, and described motor is used to drive the DVD dish and does the constant linear velocity rotation; Described laser reading head is used to read the data on the DVD CD.

Described surface-mounted integrated circuit is provided with integrated circuit, and the pulse signal that described integrated circuit is used for reading from CD converts the data that demoder can use to.

Described audio/video decoder is used for separating sound and the television image data from DVD player core data stream, sets up the synchronized relation of sound and television image, and television image data and voice data after decompressing are recombinated as requested.

Described microcontroller is used for the operation of controls playing machine, and the user's input on management telepilot or the control panel, and they are converted to the order that demoder and DVD loader can be discerned.

Voltage-stabilized power supply circuit, remote control reception head and audio frequency and video output interface also are installed in the described casing, and they are fixed on casing inside.

Described bottom of shell adopts the zinc-magnesium aluminium alloy to make.

In the utility model that thermal value is big audio/video decoder and microcontroller are arranged on the surface-mounted integrated circuit bottom, simultaneously because the close bottom of shell of surface-mounted integrated circuit, and bottom of shell is to adopt the good zinc-magnesium aluminium alloy of heat dispersion to make, the heat that audio/video decoder and microcontroller are produced can diffuse in the air by bottom of shell, thereby reach better heat radiating effect, prolonged the serviceable life of DVD player.

Description of drawings:

Fig. 1 is an external structure synoptic diagram of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the right view of Fig. 1.

Fig. 4 is each part scheme of installation in the utility model casing.

Fig. 5 is the utility model decoding circuit synoptic diagram.

Identifier declaration among the figure: casing 1, opening 2, display screen 3, opening button 4, control panel 5, buckle 6, USB slot 7, power control switch 8, power input interface 9, infra-red remote control receive 10, audio signal output interface 11, video signal output interface 12, motor 13, laser reading head 14, DVD are read disc mechanism 15, surface-mounted integrated circuit 16, microcontroller 17, audio/video decoder 18, chassis backplane 19.

Embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

As Fig. 1～shown in Figure 4, the utility model is a kind of portable DVD player machine with heat sinking function, by casing 1, be installed in the surface-mounted integrated circuit 16 that DVD in the casing reads disc mechanism 15 and audio/video decoder 18 and microcontroller 17 places and constitute, described surface-mounted integrated circuit 16 is installed in the downside that DVD reads disc mechanism 15, and described audio/video decoder 18 and microcontroller 17 are positioned at the bottom of surface-mounted integrated circuit 16.

In Fig. 1, center section is equipped with a display screen 3 on the casing 1, the situation that this display screen 3 can explicit user be operated machines, can play the DVD CD by control panel 5 as the user and to select and F.F. such as retreats at operation, this moment, these operational circumstances of user will show on display screen 3, also can show the music title and the reproduction time of current broadcast simultaneously in the process of playing back music on display screen 3.The top opening button 4 that also is provided with an opening 2 and 2 open and close of a control opening of casing 1 when needs DVD playing back CD, pushes button 4, and this moment, opening 2 was opened, and the DVD CD is put into DVD read disc mechanism 15, then opening 2 was closed.

As shown in Figure 2, Fig. 2 is the left view of Fig. 1.Left surface in DVD player described in the utility model is provided with a buckle 6, and described buckle 6 is used for the last cover gab 2 and the lower cover of casing 1 are closely engaged; A USB slot 7, described USB slot 7 can be used for being connected with external unit such as computer, and can realize data transmission with external unit by this USB slot 7; A power input interface 9, this power input interface 9 is realized the DVD playing back CD not having battery or battery not to have can directly be connected with direct supply under the electric situation; Also be provided with a power control switch 8 that is used to control described power supply input in addition, can realize power supply control, when not using for a long time, this gauge tap can be closed, thereby can prolong the serviceable life of machine DVD player by this gauge tap 8.

As shown in Figure 3, Fig. 3 is the right view of Fig. 1.Be provided with infra-red remote control on the right side of DVD player and receive 10, described infra-red remote control receives 10 and can receive from the control of remote controller signal, especially under the malfunctioning or damaged condition, can receive 10 control that realize DVD player at control panel 5 by telepilot and infra-red remote control; An audio signal output interface 11, described audio signal output interface 11 can external power amplifiers or equipment such as sound equipment, the audio-frequency information on the DVD CD can be read and realize output by audio signal output interface 11; A video signal output interface 12, described video signal output interface 12 can external display device, the audio-frequency information on the DVD CD can be read and realize output by video signal output interface 12.

As shown in Figure 4, Fig. 4 is each part scheme of installation in the utility model casing.Wherein partly be provided with DVD in casing 1 upper inside and read disc mechanism 15, described DVD reads disc mechanism 15 and mainly is made up of motor 13, laser reading head 14 and relevant driving circuit.Described motor 13 is mainly used in driving DVD dish and does the constant linear velocity rotation; The data that DVD laser reading head 14 is used to read on the CD, what mainly use is red laser, rather than the infrared laser that uses on the CD player.Circuit integrated on described driving circuit and the surface-mounted integrated circuit 16 is connected, the lower portion of reading disc mechanism 15 at DVD is equipped with a surface-mounted integrated circuit 16, described surface-mounted integrated circuit 16 and DVD read to form certain space between the disc mechanism 15, surface-mounted integrated circuit 16 is read near DVD to be welded with the partial circuit element on the front of disc mechanism 15 parts, wherein the bottom surface of surface-mounted integrated circuit 16 is provided with thermal value bigger audio/video decoder 18 and microcontroller 17, described surface-mounted integrated circuit 16 is near the chassis backplane 19 of casing 1, described chassis backplane 19 adopts is that the zinc-magnesium aluminium alloy manufacturing of good heat dissipation effect forms, in the process of DVD player work described in the utility model, because main chip audio/video decoder 18 and microcontroller 17 can produce a large amount of heat, these heats just can be by distributing with the most approaching chassis backplane 19 of audio/video decoder 18 and microcontroller 17, and chassis backplane 19 is to be made by the zinc-magnesium aluminium alloy of good heat dissipation effect, therefore can be very fast these heats be discharged, thus reach better heat radiating effect.

As shown in Figure 5, Fig. 5 is the utility model decoding circuit synoptic diagram.Wherein audio/video decoder 18 be one by more than 100 ten thousand integrated large-scale circuits of transistor, it is mainly used in separation from sound in the DVD player core data stream and television image data, sets up the synchronized relation of sound and image; Be used for the television image data of compression are decompressed, reconstruct the television image of broadcast level quality, and, give television system then according to TV display format reorganization television image data; And the voice data of compression decompressed, reconstruct the surround sound of CD quality, and, give stereophonic sound system then according to the broadcast specification of sound reorganization voice data; This audio/video decoder also is used to handle accessory pattern in addition, selects to watch with graphics mode display program menu and for the user.

Microcontroller described in the utility model 17 is actually a miniature computer chip.It is mainly used in the operation of control DVD player device; And the user's input on management telepilot or the control panel, and they are converted to the order that demoder and DVD loader can be discerned.

Decoding circuit as can be seen from Fig. 5, DVD reads disc mechanism 15 will be input to audio/video decoder 18 by the DVD CD signal that laser reading head 14 is read, solve audio frequency and vision signal by audio/video decoder 18, connecing D/A converter, connect video, audio frequency and Doby AC-3 decoding output thereafter, microprocessor 17 is also handled the information of decoding chip the work of control apparatus when work; Video output RGB external connection display equipment, audio frequency output R, L can external sound equipments, and the AC-3 audio decoder is exported external amplifier.Wherein the remote control receiving chip is used to receive the control operation of control of remote controller signal realization to DVD player, the 4M-ROM chip is the DVD character memory, the EE-PROM chip is used to store the setting of user to DVD, and the frame buffer chip is used to the audio/video decoding chip that image buffers is provided.

More than a kind of portable DVD player machine with heat sinking function described in the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present utility model; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1, a kind of portable DVD player machine with heat sinking function, by casing, be installed in the surface-mounted integrated circuit that DVD in the casing reads disc mechanism and audio/video decoder and microcontroller place and constitute, described surface-mounted integrated circuit is installed in the downside that DVD reads disc mechanism, it is characterized in that: described audio/video decoder and microcontroller are positioned at the bottom of surface-mounted integrated circuit.

2, the portable DVD player machine with heat sinking function according to claim 1 is characterized in that: described DVD reads disc mechanism and is made up of motor, laser reading head and driving circuit, and described motor is used to drive the DVD dish and does the constant linear velocity rotation; Described laser reading head is used to read the data on the DVD CD.

3, the portable DVD player machine with heat sinking function according to claim 1, it is characterized in that: described surface-mounted integrated circuit is provided with integrated circuit, and the pulse signal that described integrated circuit is used for reading from CD converts the data that demoder can use to.

4, the portable DVD player machine with heat sinking function according to claim 1, it is characterized in that: described audio/video decoder is used for separating sound and the television image data from DVD player core data stream, set up the synchronized relation of sound and television image, and television image data and voice data after decompressing are recombinated as requested.

5, the portable DVD player machine with heat sinking function according to claim 1, it is characterized in that: described microcontroller is used for the operation of controls playing machine, and the user's input on management telepilot or the control panel, they are converted to the order that demoder and DVD loader can be discerned.

6, the portable DVD player machine with heat sinking function according to claim 1 is characterized in that: voltage-stabilized power supply circuit, remote control reception head and audio frequency and video output interface also are installed in the described casing, and they are fixed on casing inside.

7, the portable DVD player machine with heat sinking function according to claim 1 is characterized in that: described bottom of shell adopts the zinc-magnesium aluminium alloy to make.