CN1220113C - Cooling device with shading function - Google Patents

Abstract

A heat dissipation device with a light shielding function comprises a lampshade, a blocking sheet, a top surface light shielding sheet, a side surface light shielding sheet and a fan. The top surface of the lampshade is provided with a top vent and the side surface is provided with a side vent, the lamp light source is accommodated in the lampshade, the barrier sheet is arranged in the top vent, the barrier sheet is provided with a barrier sheet long shaft, the barrier sheet long shaft and the top surface have a first included angle, the top surface anti-dazzling screen is arranged on the barrier sheet, the top surface anti-dazzling screen is provided with a top surface anti-dazzling screen long shaft, a second included angle is arranged between the top surface anti-dazzling screen long shaft and the barrier sheet long shaft, the side surface anti-dazzling screen is arranged in the side vent, the side surface anti-. The fan adjacent to the side vent drives the air in the lampshade to flow between the top vent and the side vent.

Description

Cooling device with shading function

Technical field

The invention relates to a heat dissipation device, in particular to a heat dissipation device used in an illumination system.

Background technique

In the development of projection equipment, luminous flux has always been an important indicator, and it is also an important consideration factor to attract consumers to purchase projection equipment. Light from all directions is guided and concentrated in a limited space angle range. Therefore, general projection equipment uses high-power light sources and opaque lampshades to increase the light intensity and luminous flux in the direction of use. However, since there is no air flow through the top surface of the lampshade, a large amount of heat generated by the light source is also confined to the interior of the lighting system and cannot be easily discharged, which makes it difficult to lower the temperature of the upper cover of the projection device.

Contents of the invention

The object of the present invention is to provide a heat dissipation device with a shading function, which can increase the ventilation volume near the lampshade to achieve a good heat dissipation effect and reduce the internal temperature of the lighting system.

The object of the present invention is achieved by providing a heat dissipation device with a light-shielding function, comprising: a lampshade for accommodating a light source in the lampshade, having a top surface and a side surface, wherein the top surface is provided with a top A side vent, the side is provided with a side vent; a barrier sheet is arranged in the top vent, the barrier has a major axis of the barrier, and the major axis of the barrier has a first included angle with the top surface; A top shading sheet is arranged on the barrier sheet, the top shading sheet has a long axis of the top shading sheet, and there is a second included angle between the long axis of the top shading sheet and the long axis of the barrier sheet; a side shading sheet A sheet is arranged in the side vent, the side shading sheet has a long axis of the side shading sheet, and the long axis of the side shading sheet has a third angle with the side; and a fan is adjacent to the side vent of the lampshade , used to drive the air in the lampshade to flow between the top vent and the side vent.

In addition, several top shading sheets can be arranged in parallel to form a top louver, and several side shading sheets can be arranged in parallel to form a side louver, while the top louver and the side louvers are integrally formed and assembled in a detachable manner On the top and side of the lampshade. The cold outside air flows through the top air window and enters the lampshade through the top vent, while the hot air in the lampshade is drawn out by the fan through the side air vent and the side air window.

The present invention also provides a heat-dissipating projection light box, which is used in a projection device for placing a light source. The heat-dissipation projection light box includes: a lampshade with a top surface and a side surface, wherein the top surface A top vent, the side is provided with a side vent; a plurality of top shading sheets, used to cover the light irradiated by the light source to the top vent; and a plurality of side shading sheets, used to cover the light source The light that hits the side vent.

The advantage of the device of the present invention is that it utilizes the design of the vent and the shading sheet to increase the ventilation near the lampshade and take away the heat generated by the light source, so as to simultaneously achieve the dual effects of shading and heat dissipation. Applied to projection equipment, it can provide a heat-dissipating projection light box, which increases the ventilation of the overall lighting system and reduces the temperature of the upper cover of the projection equipment, so that a large amount of heat generated by the light source will not accumulate in the lighting system. , and can effectively solve the problem that the upper cover temperature of the projection device is too high.

Description of drawings

Fig. 1 is an exploded view of a heat sink with light-shielding function according to a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram of the heat dissipation device with shading function and the airflow direction near the lampshade according to a preferred embodiment of the present invention;

3 is a schematic diagram of the light path and airflow direction at the vent on the top surface of a heat dissipation device with a shading function according to a preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of the light path and airflow direction at the side vents of a heat sink with shading function according to a preferred embodiment of the present invention.

Detailed ways

Please refer to FIG. 1 , which shows an exploded view of a heat sink with a light-shielding function according to a preferred embodiment of the present invention; its assembly direction is according to the direction indicated by the arrow in the figure. The heat dissipation device with shading function of the present invention includes a lampshade 100 , a barrier 112 a , a top shading 104 a , a side shading 106 a and a fan 108 . The lampshade 100 is used to accommodate the light source 102 in the lampshade 100. The top surface 90 of the lampshade 100 is provided with a top vent 112 and the side 94 is provided with a side vent 114. The barrier sheet 112a is arranged in the top vent 112 to block The sheet 112a is preferably integrally formed with the lampshade 100 . The top shading sheet 104a is arranged on the barrier sheet 112a, and the side shading sheet 106a is arranged on the side vent 114. Since the top shading sheet 104a forms an inclined angle with the top surface of the lampshade 100, it can cover the light source 102 from irradiating to the top. At the same time, the side shading sheet forms an inclined angle with the side surface 94 of the lampshade 100, so it can cover the light irradiated by the light source 102 to the side vent 114, so that the lampshade 100 can concentrate the light irradiated in all directions on the The effect of a limited spatial angle range, and the light from the light source 102 is concentrated on the light hole 116 on the other side of the lampshade 100, and emitted from the light hole 116 in a single direction to increase the light intensity in the direction of use. and luminous flux. The fan 108 is adjacent to the side vent 114 of the lampshade 100 , and drives the air in the lampshade to flow between the top vent 112 and the side vent 114 .

As shown in Figure 1, several top shading sheets 104a are arranged in parallel and form a top louver 104, and are arranged on the top surface 90 of the lampshade 100 in a screw-fixed manner, while several side shading sheets 106a are arranged in parallel and form a top louver 104. A side louver 106 is arranged on the side 94 of the lampshade 100 in a screw-fixed manner, and the top shading sheet 104a and the side shading sheet 106a are preferably integrally formed so that the top louver 104 and the side louver 106 are detachably assembled On the lampshade 100 , the top air vent 112 is a fence-like structure with several blocking pieces 112 a , so that the top light-shielding plate 104 a corresponds to the blocking pieces 112 a one by one. In addition, the top shading sheets 104a and the side shading sheets 106a can be respectively connected to the top surface 90 and the side surface 94 of the lampshade 100 to be directly integrally formed with the lampshade 100 to achieve the same shading and heat dissipation effects.

Please refer to FIG. 2 , which shows a schematic view of the heat dissipation device with shading function and the airflow direction near the lampshade according to a preferred embodiment of the present invention; please also refer to FIG. 1 . The external cold air W1 flows through the top air window 104 and enters the lampshade 100 through the top vent 112. The cold air W1 absorbs the heat on the surface of the light source 102 to become hot air W2, and then the fan 108 blows the hot air W2 in the lampshade 100 Through the side vents 114, it is drawn out through the side louvers 106. When the heat dissipation device with shading function of the present invention is applied to projection equipment, a heat dissipation projection light box can be provided to increase the ventilation of the overall lighting system and reduce the temperature of the upper cover of the projection equipment. At the same time, the shape of the lampshade can be matched with the lamp The shape of the light source is designed to change, so that the cold air flowing into the lampshade can effectively take away a large amount of heat generated on the surface of the light source, and will not accumulate in the interior of the lighting system, and can effectively solve the problem of excessive temperature on the upper cover of the projection equipment.

Please refer to FIG. 3 , which shows a schematic diagram of the light path and airflow direction at the vent on the top surface of a heat dissipation device with a shading function according to a preferred embodiment of the present invention. As shown in FIG. 3 , several top shading sheets 104a are arranged in parallel, and the top vent 112 is a fence-like structure with several blocking sheets 112a, so that the top shading sheets 104a correspond to the blocking sheets 112a one by one. The blocking sheet 112a has a long axis X1 of the blocking sheet, and the long axis X1 of the blocking sheet has a first included angle θ ₁ with the top surface 90 . The top shading sheet 104a arranged on the barrier sheet 112a has a long axis X2 of the top shading sheet, and the lower end of the long axis X2 of the top shading sheet is adjacent to the upper end of the long axis X1 of the blocking sheet, and the long axis X2 of the top shading sheet There is a second angle θ ₂ with the major axis X1 of the barrier sheet. Since the major axis X1 of the barrier sheet has a first included angle θ ₁ with the top surface 90 , and the major axis X2 of the top surface light-shielding sheet has a second included angle θ ₂ with the major axis X1 of the barrier sheet. Therefore, the oblique arrangement of the top shading sheet 104a and the barrier sheet 112a can block the light L1 irradiated by the light source 102 to the top vent 112, while the external cold air W1 flows through the top shading sheet 104a and passes through the barrier of the top vent 112. The piece 112a is inserted into the lampshade 100 .

Please refer to FIG. 4 , which shows a schematic view of the light path and airflow direction at the side vents of a heat dissipation device with a shading function according to a preferred embodiment of the present invention. Several side shading sheets 106a are arranged parallel to the side air vent 106 , the side shading sheets 106a have a long axis X3 of the side shading sheets, and the long axis X3 of the side shading sheets has a third included angle θ ₃ with the side surface 94 . The side shading sheet 106a forms an inclined angle with the side 94, which can not only cover the light irradiated by the light source 102 to the side vent 114, but also allow the hot air W2 in the lampshade 100 to pass through the side vent 114 by the fan 108, and pass through the side shading. The sheet 106a is drawn out.

Therefore, the setting of the top surface vent 112 allows a large amount of external cold air W1 to enter from the top surface 90 of the lampshade 100, so that the temperature of the top surface 90 of the lampshade 100 is lowered, while the hot air W2 in the lampshade 100 passes through the side vent 114 and is blown by the fan. 108 is extracted through the side shading sheet 106a; and the design of the top shading sheet 104a is used to cover the light L1 irradiated to the top vent 112, so the heat dissipation device with shading function of the present invention can simultaneously achieve shading and heat dissipation role.

In summary, although the present invention has been disclosed in combination with the above preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and changes without departing from the spirit and scope of the present invention. modification, so the protection scope of the present invention should be defined by the claims.

Claims (17)

1. heat abstractor with shade function comprises:

One lampshade in order to take in a light source in this lampshade, has an end face and a side, and wherein this end face is provided with an end face ventilating opening, and this side is provided with a side vent;

One barrier flaps is arranged in this end face ventilating opening, and this barrier flaps has a barrier flaps major axis, and this barrier flaps major axis and this end face have one first angle;

One pre-face anti-dazzling screen is arranged on this barrier flaps, and this end face anti-dazzling screen has an end face anti-dazzling screen major axis, has one second angle between this end face anti-dazzling screen major axis and this barrier flaps major axis;

One side anti-dazzling screen is arranged in this side vent, and this side anti-dazzling screen has a side anti-dazzling screen major axis, and this side anti-dazzling screen major axis and this side have one the 3rd angle; And

One fan is adjacent to this side vent of this lampshade, and air flows between this end face ventilating opening and this side vent in this lampshade in order to drive.

2. heat abstractor as claimed in claim 1, wherein this end face anti-dazzling screen is fixed on this end face.

3. heat abstractor as claimed in claim 1, wherein this side anti-dazzling screen is fixed on this side.

4. heat abstractor as claimed in claim 1, wherein this end face anti-dazzling screen and this side anti-dazzling screen employing are one-body molded, detachable being assembled on this lampshade.

5. heat abstractor as claimed in claim 1, wherein the lower end of this end face anti-dazzling screen major axis is adjacent to this barrier flaps major axis upper end.

6. heat abstractor as claimed in claim 1, wherein this barrier flaps and this lampshade are one-body molded.

7. a heat dissipation type projection lamp light box is used in a projector equipment, and in order to insert a lamp source, this heat dissipation type projection lamp light box comprises:

One lampshade has an end face and a side, and wherein this end face is provided with an end face ventilating opening, and this side is provided with a side vent;

A plurality of end face anti-dazzling screens are in order to hide the light that this lamp source exposes to this end face ventilating opening; And

A plurality of sides anti-dazzling screen is in order to hide the light that this lamp source exposes to this side vent.

8. heat dissipation type projection lamp light box as claimed in claim 7, wherein this each end face anti-dazzling screen is and is arranged in parallel, and forms a slanted angle with this end face.

9. heat dissipation type projection lamp light box as claimed in claim 8, wherein this each side anti-dazzling screen is and is arranged in parallel, and forms a slanted angle with this side.

10. heat dissipation type projection lamp light box as claimed in claim 9, wherein this each end face anti-dazzling screen constitutes an end face transom window, and this end face transom window is fixed on this end face.

11. heat dissipation type projection lamp light box as claimed in claim 10, wherein cool exterior air this end face transom window of flowing through enters in this lampshade by this end face ventilating opening.

12. heat dissipation type projection lamp light box as claimed in claim 11, wherein this each side anti-dazzling screen constitutes a side transom window, and this side transom window is fixed on this side.

13. heat dissipation type projection lamp light box as claimed in claim 12 makes the hot-air in this lampshade pass through this side vent, and this side transom window to a fan of flowing through.

14. heat dissipation type projection lamp light box as claimed in claim 13, wherein this end face transom window and this side transom window employing are one-body molded, detachable being assembled on this lampshade.

15. heat dissipation type projection lamp light box as claimed in claim 10, wherein this end face ventilating opening is the paliform structure, has a plurality of barrier flaps, makes this each each barrier flaps of end face anti-dazzling screen and this corresponding one by one.

16. heat dissipation type projection lamp light box as claimed in claim 7, wherein this each side anti-dazzling screen and this lampshade are one-body molded.

17. heat dissipation type projection lamp light box as claimed in claim 7, wherein this each end face anti-dazzling screen and this lampshade are one-body molded.

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