Patent ID: 12215848

DETAILED DESCRIPTION

The accompanying drawings are for exemplary illustration only, and should not be construed as limitations on this invention. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that certain well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is only for exemplary illustration, and should not be construed as a limitation on this invention.

FIGS.1and2depict a stage light fixture with a light head100having external heat dissipation according to an embodiment of the present invention, which includes a light head100for projecting light beams and a support arm200for supporting the light head to rotate via a pivoting shaft300. The light head100is formed as a cylinder with a light outlet110. A light emitting lens120is covered on the light outlet110. At least one first blower400is provided in the support arm200to blow the air around the light head100to flow and thus cool the outside of the light head100.

In the present embodiment, active heat dissipation is formed and enclosed interior of the cylinder is simultaneously ensured without damage to the structure of the light head100. The light head100can be effectively cooled in a way that the air around the light head100is blown to flow to promptly entrain the heat on the side wall thereof via the blower400mounted on the support arm200. Meanwhile, the air is blown to continuously flow around the light head100under the action of the first blower400, as well as making the heat on the side wall of the light head distributed evenly, thereby avoiding heat accumulation and effectively improving heat-dissipation efficiency for the light head.

Optionally, the first blower400can either be arranged at the outside of the support arm200or be arranged at the inner side of the support arm200.

In the illustrated embodiment, the support arm200is in a U shape, the light head100is pivoted to the inner sides of the support arm200, and each side of the U-shaped support arm200is provided with one blower400so that the air at both sides of the light head100can be blown to flow, result in enhanced flow rate of the air around the light head100and thus improved heat-dissipation efficiency of the light head.

With reference toFIGS.3-5, the support arm200includes at least one support plate281for supporting. The first blower400is arranged on the support plate281and corresponding to the pivoting shaft300the support plate281is provided with a pivoting hole. One end of the pivoting shaft300is fastened to the light head100and the other end is pivoted to the support plate281via the pivoting hole, so that the light head100can rotate around the support arm200.

As mental has good thermal conductivity, the outside of the light head100is preferably made of metal material, so that the heat inside the light head100can be conducted to the outside thereof.

The first blower400is preferably a waterproof blower, which can achieve waterproof performance of the whole light head.

In the illustrated embodiment, the support arm200is provided with an accommodating chamber210for accommodating the first blower400, and the side of the chamber210close to the light head100is provided with a first air outlet220. It makes the support arm200more compact with the blower400mounted on the accommodating chamber210.

The support arm has a plurality of housings282which are buckled with each other and surrounded the support plate281. In this case, the accommodating chamber210is formed by the support plate281, and an air guiding passage is formed between the support plate281and the housings282, so that the air blown by the first blower400will flow to the first air outlet220along the air guiding passage and finally blow toward the light head100.

The support arm200further includes an air inlet250in air communication with the outside. During running of the first blower400, the air outside enters the support arm200via the air inlet250, flows through the first air outlet220, and is then blown to the light head100with the help of the first blower400to make the air around the light head100flow rapidly, meanwhile the cool air outside can effectively cool the hot side wall of the light head100.

The support arm200may be additionally provided with an air-inlet gap260in air communication with the outside, through which cool air can enter the support arm200. With the air-inlet gap260, it thus can reduce the area of the air inlet250to achieve good waterproof and dustproof performance.

Referring toFIG.3andFIG.4, according to an embodiment of the present invention, the first air outlet220is formed as a through hole. In such case, the first air outlet220is covered by the air-outlet surface410of the first air blower400.

Referring toFIG.1,FIG.2, andFIG.5, according to another embodiment of the present invention, the first air outlet220is composed of a plurality of air vents closely arranged. In this situation, the first blower400is arranged at the side of the support arm away from the first air outlet220.

In the illustrated embodiment, the support arm200has one horizontal support230and two vertical supports240, with each end of the horizontal support230connected to one end of each vertical support240and the light head100pivoted to the other end of each vertical support240away from the horizontal support230. In this embodiment, the accommodating chamber210is arranged in the horizontal support230and/or the vertical supports240. In such configuration, the light head100can rotate relative to the support arm200around at least one dimension, and the first blower400can mounted in the horizontal support230and/or the vertical supports240according to actual demands, which thus can multi-directionally and intentionally blow cooler air to the light head100, thereby achieving effective heat dissipation for the light head100.

FIG.1andFIG.5clearly shows that the accommodating chamber210crosses over the horizontal support230and the vertical support240, the first blower400is arranged at the joint of the horizontal support230and the vertical support240, with the air-outlet surface410of the first blower400facing toward the side of the vertical support240away from the light head100. As there is sufficient room for mounting the first blower400at the joint, larger fan can be used as the first blower400, thus further improving the heat-dissipation efficiency for the light head100.

Alternatively, the first blower400can also be arranged perpendicular to the horizontal support230, with the air-outlet surface410of the first blower400facing toward the vertical support240.

In the illustrated embodiment, the first air outlet220is arranged close to the pivoting shaft300of the light head100relative to the support arm200. In operation of the stage light fixture, the light head100may usually rotate beyond the range limited by the support arm200during rotation around the pivoting shaft300. However, with such design the air can be blown to the light head100by the first blower400as much as possible, even if the light head100constantly rotates, and the air flow from the first air outlet220can blow the air around the light head to flow.

AsFIGS.1and2shown, the side of the light head100close to the support arm200is provided with a plurality of first air guiding ribs130which are parallel to the length direction of the light head100. On one hand, such air guiding ribs130can increase heat-dissipation area of the cylinder of the light head. On the other hand, air passages are formed between the adjacent air guiding ribs130, which can guide the air blown by the first blower400. Particular preference is given that the air guiding ribs130is arranged parallel to each other.

FIG.2andFIG.5clearly show that a base500is further included for supporting the support arm200to rotate. In this embodiment, a second blower700is provided in the support arm200, which is used for blowing the air around the base500to flow and thus cool it. For most of the current stage light fixtures, the control element such as control panel is arranged in the base500, that is, the rotation of the light head100and the support arm200are controlled by the base500. As the space inside the base500is usually very limited while with many elements closely mounted, less room is provided for the blower to mount inside the base500for heat dissipation. However, the second blower700arranged in the support arm in the present embodiment can achieve heat dissipation for the base500by blowing the air on the surface of the base to flow and such air promptly entrains the hot air inside the base500. Therefore, according to the present embodiment the base500can be effectively cooled, avoiding over temperature inside the base500to damage the control element.

The second flower700is preferably mounted in the accommodating chamber210, and the side of the support arm200close to the base500is provided with a second air outlet270.

Advantageously, the housing of the base is made of metal material of good thermal conductivity.

The support arm200is pivoted to the base500via a rotation shaft520, so that the light head100can rotate relative to the base500in at least two dimensions.

In the illustrated embodiment, the side of the base500close to the support arm200is provided with a plurality of second air guiding ribs510extending towards the periphery. Air passages are formed between the adjacent air guiding ribs510, through which the air blown by the second blower700can be guided orderly and flow on the surface of the base500. In addition, such second air guiding ribs510can increase heat-dissipation area of the base510. Therefore, the heat-dissipation efficiency of the base can be effectively improved.

The stage light fixture may also include a light shaping component for shaping of the light beams, a light filter component for changing the color of the light beams, a pattern component for forming light beams with specific pattern, and/or a lens component for changing divergence angle of the light beams. With such effect-forming modules, the stage light fixture thus can produce rich and varied light effects.

The light emitting lens120and the cylinder-shape light head100is closely cooperated to form an enclosed chamber, in which the effect-forming modules are arranged for changing light effects of the stage light fixture. Such configuration ensures the sealing of the light head100to avoid water entering the light head100to damage the elements therein. Meanwhile, the first blower400accelerates the flow rate of the air around the light head100. The light head100of the present invention thus meets the requirements of waterproof performance and heat dissipation.

With reference toFIG.5, the support arm200is further provided with a waterproof tube600for receiving the electric lines of the electric elements, which can further avoid water entering the accommodating chamber210of the support arm200with the cool air to cause adverse effects on the electric lines.

With reference toFIG.6, a circulating fan150is further provided in the light head100according to a preferred embodiment, which blows the heat inside the light head100to at least one side wall of the light head100close to the support arm200. In such configuration, the heat inside the light head100, especially at the center of the light head100, can be directed to the inner side wall thereof by means of the circulating fan150, then conducted to the outer side wall of the light head100via heat exchange, and finally removed by the first blower400.

The circulating fan150is particularly in form of an exhaust fan. In this case, an air guide160connected to the air outlet of the circuiting fan150is further arranged. The circulating fan150is arranged close to the light source140, so that heat air with higher temperature accumulated around the light source140during operation can be extracted by the circulating fan150, further guided to side wall of the light head100close to the support arm200through the air guide160for heat exchange therewith, and finally directed to the outside of the light head100. On the other hand, the heat air from inside of the light head100is cooled into cold air after heat exchange, such cold air is in turn blown to the area close to the light source140or the effect assembly from the side of the light head100away from the light source140for the next heat exchange. With the cooperation of the circuiting fan150and the air guide160, a heat dissipation passage is formed inside of the light head100for air circulation therein.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the mode of implementation of the present invention. For those of ordinary skill in the art, changes or alterations in other different forms can also be made on the basis of the above description. It is not needed and also not possible to list all the modes of implementation here. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.