Abstract:
The present invention discloses a heat dissipation structure of a mobile rack, comprising a fan disposed on a front panel and a back panel inside a sealed enclosure, and connected to a circuit of a power supply section on the back panel; when the fans are operating, a wind tunnel effect is taken place inside the enclosure to discharge the heat produced by a data storage device.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a heat dissipation structure of a mobile rack, more particularly to a heat dissipation structure having a fan each on the front panel and the back panel of a sealed enclosure to produce a wind tunnel effect. 
     2. Description of the Related Art 
     Due to the fast development of information technologies, computer hardware equipments are making changes to cope with the changing requirements. For example, the hard disk drive at early stage is installed in a computer housing, but due to the consideration of data storage, backup, or even the portability and security of confidential information, the so-called “Mobile Rack” such as the hard disk drive mobile rack is introduced to meet the requirements, which definitely brings lots of convenience to users. 
     However, there are requirements for high-speed transmission and reliability and the Serial ATA (SATA) interface is expected to replace the IDE interface for the data storage device specification. Since the SATA interface data storage device has the advantages of large capacity and fast speed, therefore the temperature of the heat produced by the data storage device, similarly to that of the central processing unit (CPU), gets higher and higher. The manufacturers are facing the sane issue of heat dissipation. 
     The prior art mobile rack is taken for example. In order to expedite the heat dissipation of an IDE interface data storage device in an enclosure, it is generally to have at least one intake fan installed on the front panel to extract the hot air accumulated in the external frame and discharge the heat into the main computer system for having a better heat dissipation effect. However, the shortcomings of such heat dissipation structure reside on that (1) since there is no gap between the bottom panel and the data storage device in the enclosure, therefore it is difficult to dissipate the heat at the bottom of the data storage device and will reduce the heat dissipation effect; (2) Since the frame is disposed in the installation space of the main computer system, it is necessary to remove the computer system to take out the frame for maintaining or replacing the fan if the extractive fan breaks down due to its continuous operation for a long time. Such arrangement causes inconvenience and needs improvement. 
     In view of the above shortcomings, the present inventor herein with many years of practical experience in the design, development, manufacturing and marketing of mobile racks and external frames enhanced the design and overcame the shortcomings of the prior-art computer mobile rack having poor heat dissipation and inconvenience for maintenance or replacement by performing a series of researches and developments and finally succeeded to invent the “heat dissipation structure of mobile rack” in accordance with the present invention. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide a heat dissipation structure of a mobile rack, comprising a fan each disposed on the front panel and the back panel of a sealed enclosure, and connected to a power supply section disposed at the back panel by a circuit such that when the two fans are running, a wind tunnel effect is produced in the enclosure to discharge the heat generated by the data storage device. 
     The secondary objective of the present invention is to provide a heat dissipation structure of a mobile rack, comprising a heightened device at the bottom panel in the enclosure for heightening the data storage device and forming a gap between the data storage device and the bottom panel. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which: 
     FIG. 1 is a perspective diagram of the disassembled parts of the structure according to the present invention; 
     FIG. 2 is a cross-sectional diagram of the heat dissipation path of assembled structure of the present invention; and 
     FIG. 3 is a perspective diagram of the assembled structure of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Refer to FIGS. 1 to  3 . In the figures, the mobile rack according to the present invention basically comprises an enclosure  1  and an external frame  2 . 
     The enclosure  1  is box body with an open top and a chamber  11  in the enclosure  1  for accommodating and positioning a data storage device A such as a SATA interface hard disk, and having a top panel  12  for sealing the top of the chamber  11  to form a sealed enclosure  1 . 
     The technical feature of the enclosure  1  of this invention resides on that it has a fan disposed on the front panel  13  and a relay connecting section  141  (which is a hollow connecting groove as shown in the figure) disposed on the back panel corresponsive to the connecting section of the signal and power supply of the data storage device A and the external frame  2  for receiving the embedment of the external frame connector  231  of the external frame  2  and connecting to the SATA interface signal and the power supply connector. However, the present invention includes but not limited to the above. If the data storage device is an IDE or other interface, the relay connecting section  141  is a relay connector having the functions of integrating and separating the signal and the power supply. In addition, the back panel  14  has a fan  142  preferably disposed corresponsive to the fan  131 , wherein the two fans preferably provide wind in the same direction. For example, if the fan  131  is an intake fan and the fan  142  is an extraction fan, such arrangement can give a better airflow. In the mean time, the fan  142  at the back panel  14  has a wind pipe  143  provided from its external side to prevent the heat from being accumulated in the external frame body  2 , such that the accumulated heat cannot be discharged. 
     A power supply section  144  is disposed at the back panel  14  for supplying the power for the operation of the two fans  131 ,  142  and coupled to the power output section  232  corresponsive to the external frame  2 . However, it is a prior art and will not be described here. 
     Further, to let the bottom of the data storage device A have the heat dissipation effect, a heightened device  151  is protruded from the bottom panel  15  of the enclosure  1 . The heightened device  151  could be a support member in the shape of a bar, a rib, a latch, or a lump for heightening the data storage device, so that a bigger gap is formed between the data storage device A and the bottom panel  15 , and the intake airflow can flow through the upper and lower sections of the data storage device and then be extracted by the fan  142 . Such arrangement defines the heat dissipation with a wind tunnel effect. 
     The external frame  2  is a hollow frame being installed in the installation space of a computer system, wherein a circuit board  23  is disposed at the back panel  22  of the external frame  2 , and an external frame connector  232  and a power supply output section  234  are disposed respectively on the inner sides of the external frame  2  at the positions corresponsive to the relay connecting section  141  and the power supply section  144 , and a signal connector  233  and a power input section  234  are disposed on the outer sides of the external frame  2 . The technical feature of this invention resides on that a pipe hole  221  is disposed on the back panel  22  corresponding to the position of the wind pipe  143  for receiving or passing through the wind pipe  143 , such that the hot air extracted by the fan  142  is discharged into the main computer system as shown in FIG.  2  and then discharged by the heat dissipation system. 
     Therefore, by the implementation of this invention, the enclosure has two fans to produce the wind tunnel effect in order to discharge the heat generated by the data storage device rapidly. In addition, a pipe hole is disposed at the fan position at the back panel of the enclosure, so that the heat can be discharged immediately. Furthermore, the external frame of this invention does not include a heat dissipation fan and will not have the trouble and inconvenience of disassembling the computer system for maintenance. Such arrangement is regarded as a novel good idea for the object of this sort. 
     While the present invention has been described by the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretations and equivalent arrangements.