JPH0538986U - Heat dissipation structure of plug-in unit - Google Patents

Abstract

(57) [Summary] [Purpose] The plug-in unit and housing are connected with screws to improve heat dissipation. [Structure] A contact portion of a radiator plate 2 integrated with a plug-in unit 1 with a housing 3 is angled so as to fit with a V groove 4 provided in the housing 3. On the outer surface of the housing 3, a counterbore (or groove) 10 having the same angle as the V groove 4 is formed.
To provide. After inserting the plug-in unit 1 into the housing 3, the heat dissipation plate 2 of the plug-in unit 1 and the housing 3 are coupled by the screw 6 and the nut 7. As a result, the heat sink 2 and the housing 3
Since the binding force of is increased and the thermal resistance between the two is reduced, the heat dissipation is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat dissipation structure for a plurality of units mounted in parallel inside an electronic device, and more particularly to a heat dissipation structure for a plug-in type unit.

[0002]

[Prior Art]

 FIG. 3 shows a conventional plug-in unit 1. A mounting component 8 is mounted on the plug-in unit 1 via a heat dissipation plate 2. A concave guide groove is provided in the housing 3b, and a leaf spring (or a card lock) 9 is provided between the concave guide groove provided in the housing 3b and the heat dissipation plate 2 of the plug-in unit 1. And the plug-in unit 1 is attached to the housing 3b. As described above, the heat radiation of the conventional plug-in unit 1 is performed by bringing the heat radiation plate 2 and the housing 3b into contact with each other and conducting the heat generation of the plug-in unit 1 to the housing 3b via the heat radiation plate 2. It has become.

[0003]

[Problems to be solved by the device]

 However, the conventional structure has a drawback that the contact area between the heat sink 2 and the housing 3b cannot be increased. Also, the contact pressure cannot be increased sufficiently. Therefore, the conventional heat dissipation structure has a problem that the heat dissipation effect is insufficient. This is a fatal drawback, especially with respect to the recent increase in the mounting density of the components in the unit or the increase in the amount of heat generated due to the speeding up of signal processing.

The present invention has been made in view of the above problems, and an object thereof is to provide a heat dissipation structure of a plug-in unit having an excellent heat dissipation effect.

[0005]

[Means for Solving the Problems]

 The heat dissipation structure of the plug-in unit according to the present invention includes a housing having a V-shaped guide groove, and a heat dissipation plate having both ends aligned with the V-shaped groove and having an angle with respect to the central portion. It is characterized in that both ends of the heat dissipation plate are brought into contact with the surface of the shaped groove by a surface, and both ends are externally coupled from the outside of the casing.

[0006]

[Action]

 In the present invention, both ends of the heat dissipation plate are formed at an angle with respect to the central part thereof, and the both ends are inserted into the V-shaped guide groove of the housing, whereby the plug-in unit is attached to the housing. In this case, since both ends of the heat dissipation plate are in surface contact with the V-shaped groove, the contact area is large and the heat transfer efficiency is high. Therefore, the heat dissipation effect is excellent.

[0007]

【Example】

 Next, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a top view showing a heat dissipation structure of a plug-in unit according to an embodiment of the present invention. In this embodiment, the plug-in unit is a printed wiring board. The plug-in unit 1 has a metal radiator plate 2 between itself and the mounting component 8, and the heat generated by the mounting component 8 is directly transmitted to the radiator plate 2.

Further, the left and right ends of the heat dissipation plate 2 are angled with respect to the central part so as to be aligned with the V-shaped guide grooves 4 provided in the housing 3, and stress caused by assembly is generated. It is designed to reduce life.

In the plug-in unit configured as described above, after the heat sink 2 is inserted (plugged in) into the housing 3, a counterbore hole provided at the same angle as the V-shaped groove 4 on the outer surface of the housing 3. Through the (or groove) 10, the screw 6 and the nut 7 are firmly coupled to the housing 3. The thermal resistance of the contact portion between the heat dissipation plate 2 and the housing 3 is variable depending on the fixing strength and the like determined by the size and number of the screws 7.

Further, the housing 3 is provided with ventilation holes 5 on the surface of the V-shaped groove 4 that does not come into contact with the heat dissipation plate 2, thereby improving the flowability of air and using the air cooling effect together. . Thereby, the heat dissipation effect can be further improved.

As described above, in this embodiment, since the plug-in unit 1 is arranged by bringing both ends of the heat sink 2 into contact with the surface of the V-shaped guide groove 4 of the housing 3, the heat sink 2 and the housing are arranged. It has a high heat transfer efficiency between and and shows an excellent heat dissipation effect.

FIG. 2 is a view showing another embodiment of the present invention. In this embodiment, the portion between the V-shaped grooves of the housing 3a has a trapezoidal shape, and the plug-in units 1 are mounted so as to face each other. As a result, the mounting efficiency of the entire device can be improved.

[0014]

[Effect of the device]

 As described above, the present invention has the effect of reducing the contact thermal resistance between the heat dissipation plate and the housing and improving the heat dissipation effect.

[Brief description of drawings]

FIG. 1 is a top view showing a heat dissipation structure of a plug-in unit showing an embodiment of the present invention.

FIG. 2 is a top view showing another embodiment of the present invention.

FIG. 3 is a top view showing a conventional plug-in unit.

[Explanation of symbols]

 1; Plug-in unit 2; Heat sink 3; Housing 4; V-shaped guide groove 5; Vent hole 6; Screw 7; Nut 8; Mounting component 9; Leaf spring (or card lock) 10; Counterbore hole (or groove) )

Claims (2)

[Scope of utility model registration request] 1. A housing having a V-shaped guide groove, and a heat radiating plate having both ends aligned with the V-shaped groove and having an angle with respect to a central portion. A heat dissipation structure for a plug-in unit, characterized in that both ends of the plate are brought into contact with each other at their surfaces, and both ends are screwed from the outside of the casing. 2. The heat dissipation structure for a plug-in unit according to claim 1, wherein a ventilation hole is provided in a portion of the housing that does not come into contact with the heat dissipation plate.