CN1770951A - Printed circuit board distribution structure - Google Patents
Printed circuit board distribution structure Download PDFInfo
- Publication number
- CN1770951A CN1770951A CN 200410092202 CN200410092202A CN1770951A CN 1770951 A CN1770951 A CN 1770951A CN 200410092202 CN200410092202 CN 200410092202 CN 200410092202 A CN200410092202 A CN 200410092202A CN 1770951 A CN1770951 A CN 1770951A
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- CN
- China
- Prior art keywords
- circuit board
- printed circuit
- pcb
- detector unit
- opening
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Structure Of Printed Boards (AREA)
Abstract
This invention relates to one printing circuit board distribution structure, which comprises heat element, temperature test element and opening, wherein, the test element is to test circle temperature of circuit board; the opening is located between temperature element and heat element on circuit board to lower thermal element heat transmission to test element.
Description
Technical field
The invention relates to a kind of printed circuit board (PCB) (Printed Circuit Board, layout structure PCB), and particularly relevant for a kind of layout structure with printed circuit board (PCB) of detector unit.
Background technology
Existing most electronic motor device, no matter be Internet appliance product, or industrial products, for taking the use under various varying environment temperature such as normal temperature and high temperature into account, tend to change the rotating speed of its heat radiation motor, to reach the operation that the normal temperature slow-speed of revolution, high temperature then improve rotating speed according to the varying environment variations in temperature.And in order to the configuration of detector unit in the electronic motor device of testing environment temperature, then normal and other electron component is integrated in and carries out layout on the printed circuit board.
Fig. 1 is the structural representation of conventional printed circuit board (PCB).Please refer to Fig. 1, printed circuit board (PCB) 100 comprises detector unit 110 and electronic component 120.Detector unit 110 is in order to detect the ambient temperature of printed circuit board (PCB) 100, to adjust the foundation of rotating speed as above-mentioned heat radiation motor.And often be provided with other electron component 120 on the printed circuit board (PCB) 100.Because the electronic signal load makes electronic component 120 itself can produce thermals source, and these heats H is easy to conduct to detector unit 110 via printed circuit board (PCB) 100, thereby influences the correctness of detector unit 110 ambient temperature that detects.
Yet, if address this problem, carry out layout on the printed circuit board (PCB) of another separation, but material and assembly cost are increased and detector unit 110 is independent of.
Summary of the invention
In view of this, purpose of the present invention is exactly that a kind of layout structure of printed circuit board (PCB) is being provided, printed circuit board (PCB) between detector unit and other thermal element is carried out the part to be hollowed out, conduct to the degree of detector unit to reduce heat that thermal element was produced via printed circuit board (PCB), improve the correctness of detector unit testing environment temperature.
According to purpose of the present invention, a kind of layout structure of printed circuit board (PCB) is proposed, comprise thermal element, detector unit and opening.Thermal element is to be connected in electronics or the organ of understanding the dissipation heat on the printed circuit board (PCB).Detector unit is the element that is connected on the printed circuit board (PCB) in order to the ambient temperature that detects printed circuit board (PCB).The position that no circuit trace process and quilt are hollowed out on the opening printed circuit board (PCB), and this position conducts to the degree of detector unit in order to the reduction thermal source that thermal element produced between detector unit and thermal element.Therefore, can improve the correctness of detector unit testing environment temperature.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail as follows.
Description of drawings
Fig. 1 represents the structural representation of conventional printed circuit board (PCB).
Fig. 2 A represents a kind of printed circuit board layout structural representation according to a preferred embodiment of the present invention.
The printed circuit board layout structural representation that has another kind of form opening among Fig. 2 B presentation graphs 2A.
The main element symbol description
100,200: printed circuit board (PCB)
110,210: detector unit
120: electronic component
220: thermal element
230: opening
240: passage
250: element
Embodiment
Please refer to Fig. 2 A, its expression is according to a kind of printed circuit board layout structural representation of a preferred embodiment of the present invention.Printed circuit board (PCB) 200 can be used in disk player, projector or rear-projection TV electronic motor devices such as (RPTV), and its layout structure comprises detector unit 210, thermal element 220 and opening (Opening) 230.Wherein, detector unit 210, (Integrated Circuit IC) or thermistor (Thermistor), is connected on the printed circuit board (PCB) 200, and in order to detect the ambient temperature of printed circuit board (PCB) 200 to can be integrated circuit.Detector unit 210 can be surface adhesion type (Surface Mounted Design, SMD) structure or a plug-in type structure for the connected mode of printed circuit board (PCB) 200.Thermal element 220 is connected on the printed circuit board (PCB) 200, and the electronic component of meeting dissipation heat or organ are (for example: metal fin).On opening 230 printed circuit board (PCB)s no circuit trace through and the position that hollowed out, this position is opened between detector unit 210 and the thermal element 220, the thermal source that is produced in order to reduction thermal element 220 conducts to the degree of detector unit 210.
When the heat H that is produced when thermal element 220 is transmitted to the A side of opening 230 via printed circuit board (PCB) 200, because opening 230 has blocked the shortest path that this heat continues to conduct to via the B side detector unit 210, and because of opening 230 formed convection current air also are heat insulation good media, so heat H will be difficult to continue to be passed to detector unit 210 by opening 230.Therefore the design of the opening 230 heat H that can reduce thermal element 220 conducts to the degree of detector unit 210, and then reduces ambient temperature to detector unit 210 and detect and cause interference.
Shown in Fig. 2 A, opening 230 is long and narrow hole (Slot) form, its length L and width W big or small the distance D of 220 of mechanism's specification, detector unit 210 of apparent temperature detecting element 210 and thermal element 220 and thermal elements and printed circuit board (PCB) 200 the strength of materials and adjust.Generally speaking, if detector unit 210 or thermal element 220 sizes are bigger, the length L of opening 230 also will heal greatly; Or the distance D of 220 of detector unit 210 and thermal elements is littler, and the length L of opening 230 and width W also will heal greatly.In addition, the strength of materials of the big I fit printed circuit board 200 of opening 230 and be adjustment is to avoid causing printed circuit board (PCB) 200 vibrations or to break easily when dropping.Therefore, opening 230 designs of the present invention are applicable to different printing circuit board 200 materials.
As mentioned above, though opening of the present invention 230 is the example explanation with long and narrow hole or around the L type hole of detector unit 210 configuration modes, the shape of the opening 230 of right printed circuit board (PCB) 200 of the present invention and area be not as limit.Opening 230 also can be any other shape or area, as long as the printed circuit board (PCB) 200 that is not hollowed out as yet around the detector unit 210 is enough to provide being connected of detector unit 210 and other elements or circuit, enough structural strengths are provided, and do not influence the circuit trace configurations on the printed circuit board (PCB) 200, to reach the purpose that the thermal source that reduces thermal element 220 conducts to detector unit 210, neither disengaging technical scope of the present invention.
Moreover printed circuit board (PCB) 200 also can be a kind of multilayer board, and detector unit 210 can be the different routing layers that are positioned at printed circuit board (PCB) 200 with thermal element 220.Opening 230 design of printed circuit board (PCB) 200 of the present invention still can reduce the degree that thermal source that the thermal element 220 that is positioned at different routing layers produced conducts to detector unit 210, to reach the purpose of correct response ambient temperature.
The advantage of the disclosed printed circuit board (PCB) of the above embodiment of the present invention is: the printed circuit board (PCB) between detector unit and the thermal element is carried out the part hollow out, utilization is blocked pathway and is increased the cross-ventilation effect, reduce the degree that heat that thermal element produces conducts to detector unit, can effectively improve the correctness of detector unit testing environment temperature.
In sum; though the present invention with a preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can carry out various changes and modification, so protection scope of the present invention is as the criterion when looking the claim restricted portion that is proposed.
Claims (16)
1. the layout structure of a printed circuit board (PCB) comprises:
One thermal element is connected on this printed circuit board (PCB);
One detector unit is connected on this printed circuit board (PCB); And
One opening is between this detector unit and this thermal element on this printed circuit board (PCB).
2. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this opening is arranged at relatively near this detector unit and away from the position of this thermal element.
3. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this opening is a long and narrow hole.
4. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this opening is around this detector unit and be provided with.
5. the layout structure of printed circuit board (PCB) as claimed in claim 4, wherein this opening is a L type opening.
6. the layout structure of printed circuit board (PCB) as claimed in claim 4 wherein also comprises another opening on this printed circuit board (PCB), between this detector unit and this thermal element, and around this detector unit and being provided with, and form a passage between two openings.
7. the layout structure of printed circuit board (PCB) as claimed in claim 6, wherein the position of this opening is symmetrical in this detector unit.
8. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein the size of this opening determines according to the size of this detector unit.
9. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein the size of this opening determines according to the size of this thermal element.
10. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein the size of this opening determines according to the distance between this detector unit and this thermal element.
11. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this detector unit is the surface adhesion type structure.
12. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this detector unit is the plug-in type structure.
13. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this detector unit is an integrated circuit.
14. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this detector unit is a thermistor.
15. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this printed circuit board (PCB) is a multilayer board.
16. the layout structure of printed circuit board (PCB) as claimed in claim 1, wherein this printed circuit board (PCB) is a single-layer printed circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410092202 CN1770951A (en) | 2004-11-03 | 2004-11-03 | Printed circuit board distribution structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410092202 CN1770951A (en) | 2004-11-03 | 2004-11-03 | Printed circuit board distribution structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1770951A true CN1770951A (en) | 2006-05-10 |
Family
ID=36751867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410092202 Pending CN1770951A (en) | 2004-11-03 | 2004-11-03 | Printed circuit board distribution structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1770951A (en) |
-
2004
- 2004-11-03 CN CN 200410092202 patent/CN1770951A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |