Lighting device

Abstract

The utility model provides a lighting device which comprises a housing, a flow guide unit and a light-emitting module. The housing defines a cooling space and comprises a water inlet and a water outlet which are communicated with the outside and the cooling space. The flow guide unit is located in the cooling space and comprises a flow guide column and at least one flow guide hole, wherein the flow guide column is connected with the housing and communicated with the water inlet, and the flow guide hole penetrates through the flow guide column. The flow guide unit and the housing jointly define a flow guide channel, the water inlet, the flow guide hole and the water outlet are communicated with the flow guide channel, and fluid flows into the flow guide column from the water inlet and then is guided out from the water outlet through cooperation of the flow guide hole and the flow guide channel. The light-emitting module is connected with the outer surface of the cover shell, the fluid flows through the cooling space, heat energy generated by the light-emitting module is absorbed, and the heat dissipation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lighting device, in particular to a lighting device with light emitting diode. BACKGROUND

[0002] Movie recording or other large-scale photography needs to be shot in different scenes, and in order to more perfectly present the scene / ambience that the photographer wants, "light source" plays an extremely important role. However, the natural light in the environment often cannot meet the required standard due to the influence of time, season, or the requirement for scene tone, therefore, high-intensity and light source that can simulate different color temperatures are necessary auxiliary tools for large-scale photography. Among them, dysprosium lamp (Hydrargyrum medium-arciodide lamp, hereinafter referred to as HMI lamp) is often used in movie recording and photography because of its high luminous intensity and stable light source supply. However, because of its high luminous intensity, it has the problems of high energy consumption and high temperature, and in addition, HMI lamp has halogen gas, so there are also safety concerns when replacing the bulb.

[0003] Therefore, it is an important development direction in the field of photography technology to find a lighting device that can replace HMI lamp and has good heat dissipation. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a lighting device with low energy consumption and easy heat dissipation.

[0005] The utility model lighting device, including casing, flow guide unit and light emitting module.

[0006] The casing defines a cooling space, including water inlet and water outlet which are connected with the cooling space and the outside.

[0007] The flow guide unit is located in the cooling space, including flow guide column connected with the casing and communicated with the water inlet, and at least one flow guide hole penetrating through the flow guide column, the flow guide unit and the casing jointly define a drainage channel, and the at least one flow guide hole, the water inlet and the water outlet are communicated with the drainage channel, fluid can flow into the flow guide column through the water inlet, and then be guided out of the casing through the cooperation of the at least one flow guide hole and the drainage channel.

[0008] The light emitting module is connected to the surface of the casing opposite to the cooling space.

[0009] Preferably, the lighting device of the utility model, the cover includes the wall and the base and the upper cover which connect two opposite ends of the wall respectively, the base, the upper cover and the wall jointly define the cooling space, the water inlet is located in the base, the flow guide column is connected with the base and communicates with the water inlet.

[0010] Preferably, the lighting device of the utility model, the base has a bottom and a side part from the circumference of the bottom upwards, the flow guide unit has one flow guide hole, the water inlet penetrates the bottom, the water outlet penetrates one of the side part and the bottom, the flow guide column is connected with the bottom and extends towards the upper cover direction and has a flow guide channel in the interior, one end of the flow guide channel communicates with the water inlet, the other end communicates with the flow guide hole, the fluid enters the flow guide channel from the water inlet, then is guided out to the drainage channel through the flow guide hole, and then flows out of the cover from the water outlet.

[0011] Preferably, the lighting device of the utility model, the flow guide column has a flow guide section and a flow guide block connected to the side opposite to the base of the flow guide section, and the edge center distance of the surface of the flow guide block connecting the flow guide section is greater than the edge center distance of the flow guide section, the flow guide block has an inner wall defining the flow guide channel, the side of the inner wall opposite to the flow guide section has a stepped surface that is tapered inward from the side adjacent to the upper cover, the stepped surface defines the flow guide hole, and the flow guide channel penetrates the flow guide section and the flow guide block to communicate the flow guide hole and the water inlet.

[0012] Preferably, the lighting device of the utility model, the flow guide block is a polyhedral shape corresponding to the wall.

[0013] Preferably, the lighting device of the utility model, the flow guide unit further has a plurality of tabs, each of the tabs extends outward from the intersection of any two adjacent faces of the flow guide block, and abuts against the intersection of the two adjacent faces of the corresponding wall.

[0014] Preferably, the lighting device of the utility model, the base and the flow guide section have matching screw threads and screw grooves, so that the flow guide section can be detachably locked to the base.

[0015] Preferably, the lighting device of the utility model, the upper cover has a drainage block in the cooling space, the drainage block extends towards the flow guide hole and forms a gap with the flow guide hole, and the base has a clamping groove for inserting and fixing the wall.

[0016] Preferably, the lighting device of the utility model, the water outlet through the upper cover, the flow guide column has solid flow guide block, and the hollow lower flow guide section and upper flow guide section, the lower flow guide section and the upper flow guide section from the two opposite ends of the flow guide block respectively towards the base and the upper cover extend, and lean against the base and the upper cover, the lower flow guide section is set with the water inlet and is communicated with the water inlet, the upper flow guide section is set with the water outlet and is communicated with the water outlet, and the flow guide unit has a plurality of flow guide holes through the upper flow guide section and the lower flow guide section respectively, the fluid enters the lower flow guide section from the water inlet of the base and is guided out from the flow guide hole of the lower flow guide section, then enters the upper flow guide section from the flow guide hole of the upper flow guide section through the drainage channel, and finally is guided out from the water outlet of the shell.

[0017] Preferably, the lighting device of the utility model, the flow guide block is a polyhedron, and the edge distance of the flow guide block is greater than the edge distance of the upper flow guide section and the lower flow guide section.

[0018] Preferably, the lighting device of the utility model, the surrounding wall is a polyhedron composed of copper, and the light emitting module includes at least one light emitting unit arranged on the surface of the surrounding wall.

[0019] Preferably, the lighting device of the utility model, the at least one light emitting unit is one of a chip-on-board packaged light emitting diode or a surface mount device light emitting diode.

[0020] The utility model discloses the beneficial effect lies in: through the design of the flow guide unit, the fluid flows through the cooling space, absorbs the heat energy generated by the light emitting module and guides the heat energy out of the shell from the water outlet, to reach the effect of heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view, and the first embodiment of the utility model is explained.

[0022] Figure 2 It is a side sectional view, and the internal structure of the first embodiment of the utility model is explained.

[0023] Figure 3 It is a side sectional view, and the fluid flow direction of the first embodiment of the utility model is explained.

[0024] Figure 4 It is a perspective view, and the second embodiment of the utility model is explained.

[0025] Figure 5 It is a side sectional view, and the internal structure of the second embodiment of the utility model is explained.

[0026] Figure 6is a side sectional view, illustrating the fluid flow direction of the second embodiment of the present application;

[0027] Figure 7 is a side sectional view, illustrating the fluid flow direction of the second embodiment of the present application;

[0028] Figure 8 is a perspective view, illustrating the third embodiment of the present application;

[0029] Figure 9 is a side sectional view, illustrating the internal structure of the third embodiment of the present application;

[0030] Figure 10 is a side sectional view, illustrating the internal structure of the third embodiment of the present application;

[0031] Figure 11 is a side sectional view, illustrating the fluid flow direction of the third embodiment of the present application. DETAILED DESCRIPTION

[0032] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0033] Before the present application is described in detail below, it is noted that like elements in the following description represent like elements in all figures.

[0034] The related technical content, features and effects of the present application will be clearly presented in the following detailed description of embodiments with reference to the accompanying drawings. In addition, it should be noted that the drawings of the present application only represent the relative relationship between the structures and / or positions of the elements, and are not related to the actual size of each element.

[0035] Referring to Figures 1 to 3 The first embodiment of the lighting device of the present application comprises a housing 2, a flow guiding unit 3 and a light emitting module 4.

[0036] The cover 2 comprises a surrounding wall 21 made of copper, a base 22 and an upper cover 23 connected to two opposite ends of the surrounding wall 21 respectively, and a water inlet 24 and a water outlet 25. The base 22, the upper cover 23 and the surrounding wall 21 jointly define a cooling space. The base 22 has a bottom 221, a side 222 extending upward from the periphery of the bottom 221, a plurality of grooves 223 recessed inward from the outer surface of the side 222 and extending toward the bottom 221, and a clamping groove 224 formed downward from the top surface of the side 222, and the surrounding wall 21 can be inserted and fixed in the clamping groove 224. The water inlet 24 penetrates the bottom 221, and the water outlet 25 penetrates one of the side 222 and the bottom 221 to communicate with the outside and the cooling space. It is to be noted that the surrounding wall 21 is a polyhedron.

[0037] Further, the surrounding wall 21 is a polyhedron with 3 to 10 faces, and the first embodiment is illustrated by taking the surrounding wall 21 as a hexahedron and the water outlet 25 penetrating the side 222 as an example.

[0038] The flow guide unit 3 has a flow guide column 31 and a flow guide hole 32, and the flow guide unit 3 and the cover 2 jointly define a flow guide channel 26.

[0039] Specifically, the flow guide column 31 has a flow guide section 311 connected to the bottom 221 and extending toward the upper cover 23, a flow guide block 312 connected to the side of the flow guide section 311 opposite to the base 22, and a flow guide channel 313 penetrating the inside of the flow guide section 311 and the flow guide block 312, and one end of the flow guide channel 313 communicates with the water inlet 24, and the other end communicates with the flow guide hole 32.

[0040] The flow guide block 312 can be cylindrical or polyhedral, and the edge center distance of the surface of the flow guide block 312 connected to the flow guide section 311 is greater than the edge center distance of the flow guide section 311. In addition, the flow guide block 312 has an inner surrounding wall 314 defining the flow guide channel 313, and the side of the inner surrounding wall 314 opposite to the flow guide section 311 has a step surface which is tapered inward from the side adjacent to the upper cover 23, and the step surface defines the flow guide hole 32.

[0041] In addition, the base 22 and the flow guide section 311 have a screw thread and a screw groove which can match each other, so that the flow guide section 311 can be detachably locked to the base 22.

[0042] The upper cover 23 further has a flow guide block 231 located in the cooling space, which extends towards the flow guide hole 32 and is arranged with a gap from the flow guide hole 32. In addition, the flow guide block 231 has a tapered appearance shape from the upper cover 23 towards the flow guide hole 32, so as to guide the fluid to flow out from the gap between the flow guide block 231 and the flow guide hole 32. In the embodiment, the flow guide block 231 is taken by way of example as having a taper shape extending from the upper cover 23 towards the flow guide hole 32, but is not limited thereto.

[0043] The light emitting module 4 includes at least one light emitting unit 41 arranged on the surrounding wall 21 and electrically connected with an external power supply (not shown). Specifically, the light emitting unit 41 can be a Chip On Board (COB) light emitting diode or a Surface Mount Device (SMD) light emitting diode. Since the related structure and material of the light emitting unit 41 are known to those skilled in the art and are not the focus of the utility model, they will not be described in more detail. In the embodiment, the light emitting module 4 includes six light emitting units 41 arranged on the six surfaces of the surrounding wall 21, which can be applied to photographic lighting, but the actual implementation is not limited thereto.

[0044] The first embodiment of the lighting device utilizes the design of the flow guide unit 3, so that the fluid for cooling enters the flow guide channel 313 from the water inlet 24, and then is shunted and discharged to the flow guide passage 26 through the gap between the flow guide hole 32 and the flow guide block 231. The heat energy emitted by the light emitting unit 41 arranged on the surrounding wall 21 can be absorbed, and then discharged from the water outlet 25 of the housing 2, so as to form a flow trajectory F as shown. Figure 3 Through the continuous flow of the fluid, the heat energy emitted by the light emitting unit 41 can be continuously taken away, so as to avoid heat energy accumulation, which is beneficial to heat dissipation and prolongs the service life of the lighting device.

[0045] In addition, the wires of each light emitting unit 41 are arranged and bundled along the groove 223, and then electrically connected to an adapter (not shown) having an adapter pin group (not shown). Thus, the lighting device of the utility model can meet the lighting requirements of different use environments, such as the use environment in which an HMI lamp is required to simulate a daytime scene during shooting. The adapter pin group conforms to the specifications of a G22 type lamp holder, but is not limited thereto. The adapter pin group can also conform to the specifications of various lamp holders such as G24 type, E12 type, E14 type, E27 type, E40 type, etc.

[0046] Referring to Figures 4 to 7The second embodiment of the lighting device has the same structure as the first embodiment, except that the water outlet 25 of the shell 2 penetrates the upper cover 23, and the upper cover 23 is free of the flow guide block 231, and the structure of the flow guide unit 3 is different from that of the first embodiment.

[0047] In addition, the second embodiment can have a communication member 27 connected to the water inlet 24 and the water outlet 25, respectively, which is used to fix a water pipe (not shown) to assist the fluid to be guided into and out of the cooling space of the shell 2. It should be noted that the first embodiment can also have the communication member 27.

[0048] Specifically, the flow guide column 31 of the flow guide unit 3 of the second embodiment has a solid flow guide block 312, and a hollow lower flow guide section 311a and an upper flow guide section 311b.

[0049] The lower flow guide section 311a and the upper flow guide section 311b extend from the two opposite ends of the flow guide block 312 towards the base 22 and the upper cover 23 and abut against the base 22 and the upper cover 23, respectively. The lower flow guide section 311a is arranged corresponding to the water inlet 24 and communicates with the water inlet 24. The upper flow guide section 311b is arranged corresponding to the water outlet 25 and communicates with the water outlet 25. The flow guide unit 3 has a plurality of flow guide holes 32 penetrating the upper flow guide section 311b and the lower flow guide section 311a, respectively, and has the structure as shown in Figure 6 The flow guide holes 32 in the lower flow guide section 311a are shown in Figure 6

[0050] The fluid enters the lower flow guide section 311a from the water inlet 24 of the base 22, is guided out of the flow guide holes 32 of the lower flow guide section 311a, enters the upper flow guide section 311b from the flow guide holes 32 of the upper flow guide section 311b through the flow guide channel 26, and is finally guided out of the shell 2 from the water outlet 25, to form the flow trajectory F as shown in Figure 7

[0051] ​​The second embodiment of the utility model discloses the design of the flow guide unit 3 lets the fluid for cooling from the water inlet 24 enters the lower flow guide section 311a, then is led out to the drainage passage 26 via the flow guide hole 32, and the heat energy radiated when the light emitting unit 41 arranged on the surrounding wall 21 emits light can be absorbed, and then flows out the casing 2 from the water outlet 25.

[0052] Referring to Figures 8 to 11 The third embodiment of the utility model discloses the structure and the first embodiment are basically same, the difference is that: the water outlet 25 is located at the bottom 221 of the base 22, the flow guide block 312 is the hexagonal column body corresponding to the surrounding wall 21, and the flow guide unit 3 also has six tabs 33, each tab 33 extends outward from the junction of any two adjacent faces of the flow guide block 312, and abuts on the junction of the corresponding two adjacent faces of the surrounding wall 21, to form the overhead structure as shown in Figure 10 .

[0053] The third embodiment of the utility model discloses the cooling fluid led out from the flow guide hole 32 can be shunted to the drainage passage 26 by the tab 33, and the heat energy radiated when the light emitting unit 41 corresponding to the surrounding wall 21 emits light can be absorbed, and then flows out the casing 2 from the water outlet 25, to form the flow trajectory F as shown in Figure 11 . The flow guide block 312 and the surrounding wall 21 are in contact by the tab 33, the area for heat conduction is improved, the heat energy radiated by the light emitting unit 41 is taken away by the fluid, and the heat energy accumulation can also be avoided, to prolong the service life of the lighting device.

[0054] In summary, the lighting device of the utility model can guide the heat energy radiated by the light emitting unit 41 to the surrounding wall 21 by the structural design of the flow guide unit 3, and the material of the surrounding wall 21 is selected from copper, and then the fluid flowing through the cooling space absorbs the heat energy of the surrounding wall 21, and the fluid absorbing the heat energy is led out from the water outlet 25, to avoid heat energy accumulation, facilitate heat dissipation, and prolong the service life of the lighting device. Therefore, the purpose of the utility model can be achieved.

[0055] The above is only the preferred embodiment of the utility model, and it is not intended to limit the scope of the utility model, and any simple equivalent changes and modifications made according to the claims and description of the utility model are still within the scope of the utility model.

Claims

1. An illumination device, characterized by The illumination device comprises, a housing defining a cooling space, an inlet and an outlet for communicating with the cooling space; a flow guiding unit located in the cooling space, comprising a flow guiding column connected to the housing and communicating with the inlet, and at least one flow guiding hole penetrating through the flow guiding column, the flow guiding unit and the housing jointly defining a flow guiding passage, and the at least one flow guiding hole, the inlet and the outlet communicating with the flow guiding passage, so that fluid can flow into the flow guiding column through the inlet, and then be guided out of the outlet through the cooperation of the at least one flow guiding hole and the flow guiding passage; and a light emitting module connected to a surface of the housing opposite to the cooling space.

2. The illumination device of claim 1, wherein The housing comprises a surrounding wall, a base and an upper cover connected to two opposite ends of the surrounding wall respectively, the base, the upper cover and the surrounding wall jointly defining the cooling space, and the inlet being located on the base, and the flow guiding column being connected to the base and communicating with the inlet.

3. The illumination device of claim 2, wherein, The base has a bottom and a side part extending upward from the periphery of the bottom, the flow guiding unit has one flow guiding hole, the inlet penetrates through the bottom, the outlet penetrates through one of the side part and the bottom, the flow guiding column is connected to the bottom and extends toward the upper cover and has a flow guiding channel inside, one end of the flow guiding channel communicates with the inlet, and the other end communicates with the flow guiding hole, so that the fluid flows into the flow guiding channel from the inlet, and then is guided out of the outlet through the flow guiding hole and the flow guiding passage.

4. The illumination device of claim 3, wherein The flow guiding column has a flow guiding section and a flow guiding block connected to a side of the flow guiding section opposite to the base, and the edge center distance of the surface of the flow guiding block connected to the flow guiding section is greater than the edge center distance of the flow guiding section, the flow guiding block has an inner surrounding wall defining the flow guiding channel, a side of the inner surrounding wall opposite to the flow guiding section has a stepped surface tapering inward from a side adjacent to the upper cover, the stepped surface defines the flow guiding hole, and the flow guiding channel penetrates through the flow guiding section and the flow guiding block to communicate the flow guiding hole and the inlet.

5. The illumination device of claim 4, wherein, The flow guiding block is a polyhedral shape corresponding to the surrounding wall.

6. The illumination device of claim 5, wherein, The flow guiding unit further has a plurality of tabs, each of the tabs extending outward from the intersection of any two adjacent surfaces of the flow guiding block, and abutting against the intersection of two adjacent surfaces of the corresponding surrounding wall.

7. The illumination device of claim 4, wherein The base and the flow guiding section have matching screw threads and screw grooves, so that the flow guiding section can be detachably locked to the base.

8. The illumination device of claim 2, wherein, The upper cover has a flow guiding block located in the cooling space, the flow guiding block extending toward the flow guiding hole and being spaced from the flow guiding hole, and the base has a clamping groove for inserting and fixing the surrounding wall.

9. The illumination device of claim 2, wherein, The water outlet penetrates the upper cover, the flow guide column has a solid flow guide block, and a hollow lower flow guide section and an upper flow guide section, the lower flow guide section and the upper flow guide section extend from two opposite ends of the flow guide block towards the base and the upper cover respectively, and abut against the base and the upper cover, the lower flow guide section is arranged corresponding to the water inlet and communicates with the water inlet, the upper flow guide section is arranged corresponding to the water outlet and communicates with the water outlet, and the flow guide unit has a plurality of flow guide holes penetrating the upper flow guide section and the lower flow guide section respectively, the fluid enters the lower flow guide section from the water inlet of the base, is guided out from the flow guide holes of the lower flow guide section, enters the upper flow guide section from the flow guide holes of the upper flow guide section through the flow guide channel, and is finally guided out from the water outlet of the cover.

10. The illumination device of claim 9, wherein, The flow guide block is a polyhedron, and the edge-to-center distance of the flow guide block is greater than the edge-to-center distance of the upper flow guide section and the lower flow guide section.

11. The illumination device of claim 2, wherein, The surrounding wall is a polyhedron composed of copper, and the light emitting module includes at least one light emitting unit arranged on the surface of the surrounding wall.

12. The illumination device of claim 11, wherein, The at least one light emitting unit is one of a chip-on-board packaged light emitting diode or a surface mount device light emitting diode.

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