Optimized heat dissipation structure of a direct current UHP lamp

Abstract

The utility model belongs to the cooling technical field of lighting device, concretely relates to a heat dissipation optimization structure of direct current UHP lamp, and the new type includes: lamp body, it includes: bulb and the lamp shell sealed connection with the bulb, first cooling pipe, spiral winding is established in the circumferential surface of the axial outside of the bulb, cooling assembly is arranged in the lamp shell inner wall, it includes: a plurality of first cooling fin and second cooling pipe along the equidistance arrangement of lamp shell. The utility model's advantage lies in: through spiral winding first cooling pipe directly in the circumferential surface of the bulb, makes cooling medium to be able to carry out heat exchange directly with the bulb body of the highest temperature. This cooling mode, significantly shorten the heat conduction path, greatly reduced the thermal resistance, can rapidly take away the core heat of the bulb generation, thereby effectively reduces the working temperature peak of bulb, this for prolonging the bulb life, stabilizing light output is important.

Description

Technical Field

[0001] This utility model belongs to the field of cooling technology for lighting devices, and specifically relates to an optimized heat dissipation structure for a DC UHP lamp. Background Technology

[0002] DC UHP (ultra-high pressure mercury) lamps are widely used in projection displays, special lighting, and other fields due to their high brightness and high color temperature. Their wicks operate under ultra-high pressure and generate extremely high temperatures; therefore, heat dissipation efficiency directly determines the optical stability, lifespan, and reliability of the lamp.

[0003] Currently, heat dissipation designs for such lamps primarily focus on the exterior of the lamp housing, with a common approach being the addition of a fan to the outside of the metal housing for forced air cooling. The essence of this design is to conduct the heat generated by the bulb to the housing via internal air or limited contact, and then dissipate it into the environment through the external heat dissipation structure. However, this traditional solution has a fundamental flaw: the heat dissipation path is lengthy and has high thermal resistance, and it fails to directly and efficiently cool the bulb itself, the highest heat source. Because the bulb surface temperature is the highest, heat accumulates significantly inside before reaching the housing, leading to localized overheating and easily causing luminous efficacy degradation, shortened lifespan, and even the risk of explosion. Simply enhancing external heat dissipation has limited effect on reducing the peak temperature of the bulb itself, becoming a major technical bottleneck in improving the overall power and stability of the lamp.

[0004] Therefore, in order to solve the above problems, it is necessary to design a heat dissipation optimization structure for DC UHP lamps. Utility Model Content

[0005] The purpose of this invention is to provide an optimized heat dissipation structure for a DC UHP lamp to solve the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a heat dissipation optimization structure for a DC UHP lamp, comprising: a lamp body, which includes: a bulb and a lamp housing sealed to the bulb; and a first cooling tube spirally wound around the circumferential surface on the outer side of the bulb's axis. A cooling assembly, disposed on the inner wall of the lamp housing, includes: a plurality of first heat sinks and second cooling pipes arranged equidistantly along the lamp housing; wherein Each of the first heat sinks has a through hole that matches the diameter of the second cooling pipe; The second cooling pipe has a serpentine, reciprocating bending structure, and passes through the through holes of each of the first heat sinks in sequence, with the outer wall of the second cooling pipe tightly fitted to the inner wall of the through holes; Both the first and second cooling pipes are filled with coolant to directly cool the bulb and absorb heat from inside the bulb housing.

[0007] As further explained, one end of the second cooling pipe passes through the lamp housing and is connected to the first cooling pipe.

[0008] As further explained, a sealing sleeve is threaded onto the first cooling pipe.

[0009] As a further explanation, a second heat sink is evenly distributed circumferentially on the outside of the lamp housing.

[0010] As further explained, the lamp body also includes a rear cover; The rear cover is threadedly connected to the tail end of the lamp housing.

[0011] The beneficial effects of this utility model are: (i) By spirally winding the first cooling tube directly onto the circumferential surface of the bulb, the cooling medium can directly exchange heat with the bulb body, which has the highest temperature. This cooling method significantly shortens the heat conduction path, greatly reduces thermal resistance, and can quickly remove the core heat generated by the bulb, thereby effectively reducing the peak operating temperature of the bulb. This is crucial for extending bulb life and stabilizing light output.

[0012] (II) This utility model creatively couples bulb cooling and lamp housing heat dissipation into a connected, closed cooling channel (the first cooling pipe and the second cooling pipe are connected). The cooling medium, after absorbing heat from the bulb, can flow to the cooling components inside the lamp housing, and transfer its heat to multiple equidistantly arranged first heat sinks through the serpentine, reciprocating second cooling pipe. This design greatly increases the heat dissipation area and the adequacy of heat exchange, enabling heat to be quickly conducted to the lamp housing and dissipated through the heat sinks, forming a synergistic heat dissipation mechanism of "active heat absorption + efficient diffusion".

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a perspective view of a preferred embodiment of the present invention; Figure 2 This is a perspective view of a preferred embodiment of the interior of the lamp housing of this utility model; Figure 3 This is a perspective view of a preferred embodiment of the cooling component of this utility model; Figure 4 This is an exploded view of the rear cover portion of the lamp body of this utility model.

[0017] In the picture: 1. Lamp body; 2. Lamp bulb; 3. Lamp housing; 4. First cooling pipe; Cooling assembly 5, first heat sink 51, second cooling pipe 52; 6. Sealing sleeve; 7. Second heat sink; 8. Rear cover. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1-4 A heat dissipation optimization structure for a DC UHP lamp, comprising: The lamp body 1 includes: a bulb 2 and a lamp housing 3 sealed to the bulb 2; ensuring the airtightness of the internal thermal environment and preventing heat leakage from interfering with cooling efficiency; a first cooling pipe 4, spirally wound around the circumferential surface of the bulb 2 on the outer side of the axial direction; allowing the coolant to directly contact the heat source of the bulb 2 and absorb the concentrated heat generated by the bulb 2 from the source; a cooling assembly 5, disposed on the inner wall of the lamp housing 3, including: a plurality of first heat sinks 51 and second cooling pipes 52 arranged at equal intervals along the lamp housing 3; wherein each first heat sink 51 has a through hole adapted to the diameter of the second cooling pipe 52; the second cooling pipe 52 has a serpentine reciprocating bending structure, sequentially passing through the through holes of each first heat sink 51, and the outer wall of the second cooling pipe 52 is tightly fitted with the inner wall of the through hole; the first heat sinks 51 can increase the internal heat exchange area of ​​the lamp body 1, and both the first cooling pipe 4 and the second cooling pipe 52 are filled with coolant to directly cool the bulb 2 and absorb the heat inside the lamp housing 3. The second cooling pipe 52, with the help of the thermal conductivity of the first heat sink 51, allows the coolant to fully absorb the radiant heat inside the lamp housing 3.

[0020] One end of the second cooling pipe 52 passes through the lamp housing 3 and is connected to the first cooling pipe 4, so that the coolant in the two cooling pipes forms a circulation path: after the heat of the bulb 2 is absorbed by the coolant in the first cooling pipe 4, it can flow into the second cooling pipe 52 through the connecting channel, and further dissipate the heat with the help of the first heat sink 51 in the lamp housing 3, realizing an integrated heat cycle of "heat source absorbing heat to dissipate heat inside".

[0021] A sealing sleeve 6 is threaded onto the first cooling pipe 4. This seals the port of the first cooling pipe 4 (which is also the connection point between the first cooling pipe 4 and the second cooling pipe 52), blocking coolant leakage through the tight engagement of the threads. This ensures the coolant's tightness, preventing cooling failure due to leakage, and also prevents external impurities from entering the cooling pipes, improving the reliability of the structure. Furthermore, the detachable nature of the threaded connection facilitates later maintenance operations such as coolant replenishment and pipe cleaning, reducing maintenance difficulty.

[0022] The lamp housing 3 has a second heat sink 7 evenly distributed around its circumference. By increasing the contact area between the lamp housing 3 and the external environment, the heat transferred by the lamp housing 3 (heat conduction from the internal cooling component 5) is quickly dissipated to the external environment, forming a coordinated internal and external heat dissipation link of "internal heat absorption to lamp housing 3 conduction, and finally external heat dissipation".

[0023] The lamp body 1 also includes a rear cover 8; wherein the rear cover 8 is threadedly connected to the tail end of the lamp housing 3. This provides a convenient access for the installation and maintenance of internal components of the lamp body 1 (such as the cooling component 5), and the threaded connection can reliably seal the rear end of the lamp housing 3 while maintaining the flexibility to be opened.

[0024] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0025] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0028] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0029] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A heat dissipation optimization structure for a DC UHP lamp, characterized in that, include: The lamp body (1) includes: a bulb (2) and a lamp housing (3) sealed to the bulb (2); a first cooling pipe (4) spirally wound around the circumferential surface of the bulb (2) on the outer side of the axis; Cooling assembly (5), disposed on the inner wall of the lamp housing (3), includes: a plurality of first heat sinks (51) and second cooling pipes (52) arranged equidistantly along the lamp housing (3); wherein Each of the first heat sinks (51) has a through hole that matches the diameter of the second cooling pipe (52); The second cooling pipe (52) has a serpentine, reciprocating bending structure, and passes through the through holes of each of the first heat sinks (51) in sequence, and the outer wall of the second cooling pipe (52) is in close contact with the inner wall of the through hole; Both the first cooling pipe (4) and the second cooling pipe (52) are filled with coolant to directly cool the bulb (2) and absorb heat from the inside of the bulb housing (3).

2. The optimized heat dissipation structure for a DC UHP lamp as described in claim 1, characterized in that, One end of the second cooling pipe (52) passes through the lamp housing (3) and is connected to the first cooling pipe (4).

3. The optimized heat dissipation structure for a DC UHP lamp as described in claim 2, characterized in that, A sealing sleeve (6) is threaded onto the first cooling pipe (4).

4. The optimized heat dissipation structure for a DC UHP lamp as described in claim 3, characterized in that, The lamp housing (3) has a second heat sink (7) evenly distributed around its outer circumference.

5. The optimized heat dissipation structure for a DC UHP lamp as described in claim 4, characterized in that, The lamp body (1) also includes a rear cover (8); wherein the rear cover (8) is threadedly connected to the tail end of the lamp housing (3).

Images