Heat dissipation lamp body and lamp

Abstract

The heat dissipation lamp body is provided with a body, the body is provided with a containing cavity, a bottom plate of the containing cavity is provided with a high-density heating area and a non-high-density heating area, the bottom plate has a first thickness in the high-density heating area, the bottom plate has a second thickness in the non-high-density heating area, and the first thickness is larger than the second thickness. The lamp is provided with the heat dissipation lamp body, and the heat dissipation lamp body is good in heat dissipation effect and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to lamp technical field, concretely, it is a kind of heat dissipation lamp body and the lamp with the heat dissipation lamp body. BACKGROUND

[0002] The heat dissipation of the light source module is not uniform due to the different heat dissipation of different functional components on the light source module, i.e., the heat dissipation of part of the functional area of the light source module is greater than that of other functional areas of the light source module; in order to effectively dissipate heat of the light source module, the heat dissipation measure of the existing lamp (such as ceiling lamp) for the light source module is: taking the functional area with the largest heat dissipation of the light source module as the reference, the thickness of the bottom of the heat dissipation lamp body is uniformly increased, although this design can ensure the heat dissipation effect of the light source module, but in the area with relatively small heat dissipation of the light source module, the heat dissipation lamp body has the problem of excessive heat dissipation capacity, which not only causes waste of materials, but also increases the cost. SUMMARY

[0003] In order to solve the above problems, the main purpose of the utility model is to provide a heat dissipation lamp body with good heat dissipation effect and low cost.

[0004] Another purpose of the utility model is to provide a lamp with the heat dissipation lamp body.

[0005] In order to achieve the main purpose of the utility model, the utility model provides a heat dissipation lamp body, which has a body, and the body is provided with a containing cavity, wherein the bottom plate of the containing cavity is divided into a high-density heat dissipation area and a non-high-density heat dissipation area, the bottom plate has a first thickness in the high-density heat dissipation area, and the bottom plate has a second thickness in the non-high-density heat dissipation area, and the first thickness is greater than the second thickness.

[0006] As can be seen from the above, through the design of the heat dissipation lamp body, the heat dissipation lamp body can realize targeted partition heat dissipation, which ensures reliable heat dissipation of the light source module while avoiding overall increase of the thickness of the bottom plate, effectively saving materials and cost.

[0007] A further scheme is that the first thickness gradually increases from the middle of the bottom plate to the edge of the bottom plate.

[0008] As can be seen from the above, this design is conducive to achieving better heat diffusion effect, reducing local hotspot temperature and optimizing thermal stress distribution.

[0009] A preferred scheme is that, in the height direction of the lamp body, the maximum height difference of the first thickness is between 0.3 mm and 1 mm.

[0010] As can be seen from the above, through the design of the height difference, the heat dissipation lamp body can not only ensure the heat dissipation effect on the high-density heat dissipation part of the light source module, but also ensure the structural stability of the heat dissipation lamp body, and also facilitate the molding of the heat dissipation lamp body.

[0011] Further, the one side of the bottom plate facing the opening of the accommodating cavity is a plane.

[0012] As can be seen from the above, the design makes the light source module better fit the bottom plate, so as to ensure that the heat generated by the light source module can be conducted to the heat dissipation lamp body, guarantee the heat dissipation effect of the heat dissipation lamp body on the light source module, and enable the light source module to work stably and reliably.

[0013] Another preferred scheme is that the heat dissipation lamp body is discoid; the high-density heat generation area is fan ring shaped; and the high-density heat generation area is distributed close to the edge of the bottom plate.

[0014] As can be seen from the above, for the light source module integrated with the power module, the heat generated by the related components of the power module is large, and in order to ensure the lighting effect of the light source module, the related components of the power module are usually arranged at the outer edge side of the substrate of the light source module. In addition, the substrate of the light source module is usually circular, so through the design of the contour and position of the high-density heat generation area, the light source module can be effectively adapted, and the heat dissipation effect on the light source module can be ensured.

[0015] Further, the central angle of the fan ring-shaped high-density heat generation area is between 120° and 270°.

[0016] As can be seen from the above, through the design of the central angle of the fan ring-shaped high-density heat generation area, the heat dissipation lamp body can meet most light source modules, thereby expanding the application range of the heat dissipation lamp body and improving the practicability of the heat dissipation lamp body.

[0017] Further, the heat dissipation lamp body has a heat dissipation fin group, the heat dissipation fin group includes a plurality of heat dissipation fins, the plurality of heat dissipation fins are connected to the top of the body, and the plurality of heat dissipation fins are distributed in a radial manner from the middle of the bottom plate to the edge of the bottom plate.

[0018] As can be seen from the above, the heat dissipation fins help the body to assist in dissipating heat of the light source module, and improve the heat dissipation effect and speed of the heat dissipation lamp body.

[0019] Further, the heat dissipation lamp body also has an outer frame, the outer frame is arranged around the outer periphery of the heat dissipation fin group, the heat dissipation fins are connected with the outer frame, the outer frame is arranged around the outer periphery of the body, and a ventilation flow channel is formed between the outer frame, the body and the heat dissipation fins.

[0020] As can be seen from the above, the ventilation flow channel can guide the air flow to some extent, so that the heat dissipation lamp body and the heat dissipation fins can better exchange heat with the external air, thereby improving the heat dissipation speed of the heat dissipation lamp body and the heat dissipation effect of the heat dissipation lamp body on the light source module.

[0021] Further, the heat dissipation lamp body further has a connecting column part, the connecting column part is located at the top of the body and at the middle of the bottom plate, the connecting column part is provided with a first connecting hole, the bottom plate is provided with a second connecting hole at some of the heat dissipation fins; and / or the heat dissipation lamp body is made of aluminum alloy, or the heat dissipation lamp body is made of iron, the surface of the heat dissipation lamp body is plated with a zinc layer or the surface of the heat dissipation lamp body is coated with a paint layer, and the heat dissipation lamp body is a cast part.

[0022] As can be seen, the connecting column part can be used for connecting the heat dissipation lamp body with external connecting members (such as a hanging rod) and the like, so that the installation of the lamp provided with the heat dissipation lamp body is more convenient and easy to operate; and through the material selection of the heat dissipation lamp body, the heat dissipation effect of the heat dissipation lamp body on the light source module can be ensured.

[0023] In order to realize another purpose of the utility model, the utility model provides a lamp, including light source module, light source module has high density heat generating part and non high density heat generating part, wherein, the lamp further includes the heat dissipation lamp body, light source module is installed on the bottom plate, high density heat generating part is located in high density heat generating area, non high density heat generating part is located in non high density heat generating area.

[0024] As can be seen, the lamp adopting the heat dissipation lamp body can ensure that the light source module is effectively cooled, and the production cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the structure diagram of the light source module of the lamp embodiment of the utility model.

[0026] Figure 2 is the structure diagram of the heat dissipation lamp body of the lamp embodiment of the utility model.

[0027] Figure 3 is the schematic diagram of the high density heat generating area of the heat dissipation lamp body of the lamp embodiment of the utility model.

[0028] Figure 4 is the sectional view of the heat dissipation lamp body of the lamp embodiment of the utility model.

[0029] Figure 5 is Figure 4 is the enlarged view of A in Fig.

[0030] Figure 6 is the thermal simulation false color diagram of the heat dissipation lamp body of the lamp embodiment of the utility model under the same condition.

[0031] Figure 7 is the thermal simulation false color diagram of the heat dissipation lamp body of the lamp embodiment of the utility model under the same condition.

[0032] The utility model will be further described below in combination with the drawings and embodiments. DETAILED DESCRIPTION

[0033] Lamp embodiment

[0034] The lamp comprises a light source module 1 and a heat-dissipating lamp body 2, etc. The light source module 1 is installed in the heat-dissipating lamp body 2, so that the heat-dissipating lamp body 2 can dissipate heat for the light source module 1, to ensure that the light source module 1 can work normally and stably.

[0035] In combination Figure 1 The light source module 1 comprises a substrate 11 and a light-emitting device group 12. The light-emitting device group 12 is arranged on the substrate 11, and the light-emitting device is used to emit light to realize illumination. A plurality of third connecting holes 111 are arranged on the substrate 11, to be matched with the installation on the heat-dissipating lamp body 2 through connecting members (including but not limited to bolts). In this embodiment, the substrate 11 is arranged in a substantially circular shape; it can be understood that in other embodiments, the substrate 11 can also be polygonal or other shapes.

[0036] In addition, as in this embodiment, the substrate 11 of the light source module 1 is also integrally provided with a power device group 13, and the components of the power device group 13 are installed on the substrate 11. In order to ensure the illumination effect, the light-emitting devices of the light-emitting device group 12 are distributed in a radial manner from the middle part of the substrate 11 to the edge of the substrate 11, and the power device group 13 is arranged close to the edge of the substrate 11, to ensure the uniformity of the light source module 1. Generally, the power devices of the power device group 13 have a large amount of heat, and in comparison, the light-emitting devices of the light-emitting device group 12 have a relatively small amount of heat, so it can be understood that the area where the power device group 13 is located constitutes a high-density heat-emitting part of the light source module 1, and the area where the light-emitting device group 12 is located constitutes a non-high-density heat-emitting part of the light source module 1.

[0037] Since in this embodiment, the substrate 11 is arranged in a circular shape, and the power device group 13 is distributed close to the edge of the substrate 11, the distribution area of the power device group 13 (i.e. the high-density heat-emitting part) is substantially in the form of a fan ring; wherein, according to the size of the light-emitting power of the light source module 1, the size of the power device group 13 also has some difference, that is to say, the central angle of the distribution area of the power device group 13 in the form of a fan ring is not unique.

[0038] In combination Figures 2 to 5 The lamp body has a main body 21, and the main body 21 is provided with a containing cavity 211 for containing the light source module 1. The bottom plate 212 of the containing cavity 211 is divided into a high-density heat-emitting area 2121 (which can be seen in detail in the following description), and a non-high-density heat-emitting area 2122. Figure 3The high-density heat area 2121 and the non-high-density heat area 2122 are arranged in the bottom plate 212 of the heat dissipation lamp body 2 to respectively match the high-density heat part and the non-high-density heat part on the light source module 1; the high-density heat area 2121 has a first thickness H1, the non-high-density heat area 2122 has a second thickness H2, and the first thickness H1 is greater than the second thickness H2; when the light source module 1 is installed into the accommodating cavity 211, the high-density heat part of the light source module 1 is located in the high-density heat area 2121, and the non-high-density heat part of the light source module 1 is located in the non-high-density heat area 2122. Through the partition design, the heat dissipation lamp body 2 can realize targeted partition heat dissipation, that is, the high-density heat area 2121 with a larger bottom plate thickness can perform targeted heat dissipation on the high-density heat part on the light source module 1 with more heat, and the non-high-density heat area 2122 with a smaller bottom plate thickness can perform targeted heat dissipation on the non-high-density heat part on the light source module 1 with less heat, thereby ensuring the reliability of heat dissipation of the heat dissipation lamp body 2 on the light source module 1, reducing the thermal resistance of the light source module 1, and solving the problems of material waste and high cost in the prior art by uniformly increasing the overall thickness of the bottom plate 212.

[0039] It can be understood that, since the high-density heat area 2121 generates more heat, the bottom plate 212 of this area is set to be thicker than the bottom plate 212 of the non-high-density heat area 2122, so as to increase the path length of heat conduction of the bottom plate 212 at the high-density heat area 2121, so that the heat of the high-density heat area 2121 can be more quickly conducted to other parts of the bottom plate 212 and then dissipated to the surrounding environment. For example, in the embodiment, some light source modules 1 integrate a power module (such as the power device group 13) on the substrate 11 of the light source module 1, and the components of the power device group 13 generate a large amount of heat, which is a high-density heat part in the light source module 1. Therefore, the thick bottom plate 212 can effectively conduct the large amount of heat generated by the components of the power device group 13, prevent the components of the power device group 13, the light-emitting device, and the like from being damaged due to overheating, and prolong the service life of the light source module 1. It should be noted that the high-density heat part of the light source module 1 is not necessarily the power device group 13, but can also be another light-emitting device group 12 or other functional device group with more heat.

[0040] In addition, since the heat generated by the non-high-density heat generating area 2122 is relatively small and the area is large, the thickness of the bottom plate 212 of this area can be kept at a regular design to meet the heat dissipation requirements of the non-high-density heat generating part of the light source module 1, so that the overall material use of the heat dissipation lamp body 2 is effectively reduced, the production cost is reduced, and the lamp is more lightweight. Moreover, during the use of the heat dissipation lamp body 2, the heat generating components may expand and contract due to temperature changes and other factors, and the thicker bottom plate part of the high-density heat generating area 2121 can provide better support for the heat generating components. Because the thicker bottom plate 212 can better withstand the stress caused by such changes, it can prevent the heat generating components from being damaged or having poor contact due to structural deformation.

[0041] Further, the first thickness H1 gradually increases from the middle of the bottom plate 212 to the edge of the bottom plate 212. The first thickness H1 gradually increases from the middle to the edge of the bottom plate 212 of the high-density heat generating area 2121, which can form a natural heat diffusion "funnel". Because the heat generated in the high-density heat generating area 2121 can be better and more smoothly conducted to the edge of the body 21 along the direction of gradually increasing thickness, the heat can be more effectively diffused to the edge of the body 21 where the air is ventilated, and the uniformity of heat dissipation is improved. Moreover, the thicker part has a larger heat capacity, so it can absorb and conduct more heat, improving the heat dissipation effect.

[0042] In some embodiments, the maximum height difference h of the first thickness H1 in the height direction of the lamp body is between 0.3 mm and 1 mm. The height difference h is sufficient to enhance the heat dissipation effect. For the high-density heat generating area 2121, the height difference h can form a suitable heat conduction gradient in the height direction of the heat dissipation lamp body 2, allowing heat to be more efficiently conducted away from the heat source. At the same time, the height difference h will not cause waste of materials due to being too large, avoid the weight of the heat dissipation lamp body 2 being too heavy, and save costs. In addition, the height difference h can also ensure the structural stability of the heat dissipation lamp body 2, effectively preventing structural defects caused by excessive thickness changes. Furthermore, the height difference h can be adapted to various common lamp manufacturing processes. For example, during die casting, the thickness difference will not bring too high difficulty to the design and manufacture of the die casting mold, and will not increase the cost and scrap rate of die casting due to the complexity of the structure.

[0043] In order to ensure that the heat generated by the light source module 1 can be conducted to the heat dissipation lamp body 2, the side of the bottom plate 212 facing the opening of the accommodating cavity 211 is a plane 2120, so that the substrate 11 of the light source module 1 can better fit the bottom plate 212 and conduct heat to the bottom plate 212. The heat dissipation effect of the heat dissipation lamp body 2 on the light source module 1 enables the light source module 1 to work stably and reliably.

[0044] In this embodiment, since the light source module 1 is substantially circular, the structure of the heat dissipation lamp body 2 is also discoid, which matches the light source module 1. Correspondingly, the high-density heat generating area 2121 is fan ring-shaped, and the high-density heat generating area 2121 is distributed close to the edge of the bottom plate 212. It can be seen that this design can make full use of the heat dissipation advantage of the edge of the heat dissipation lamp body 2. Because in the process of natural convection heat dissipation, the edge part of the body 21 has a relatively large contact area with the surrounding air, heat is more easily dissipated into the air. In addition, since the high-density heat generating area 2121 is close to the edge of the body 21, heat will form a clear hot air rising flow at the edge of the heat dissipation lamp body 2. After the hot air rises, the surrounding cold air will supplement from the lower and side of the heat dissipation lamp body 2, forming a natural ventilation system, which constantly updates the air around the heat dissipation lamp body 2, enhancing the heat dissipation performance.

[0045] In some embodiments, the central angle a of the fan ring-shaped high-density heat generating area 2121 is between 120° and 270°. By designing the central angle a of the fan ring-shaped high-density heat generating area 2121, the heat dissipation lamp body 2 can meet the vast majority of light source modules 1, thereby expanding the application range of the heat dissipation lamp body 2 and improving the practicability of the heat dissipation lamp body 2.

[0046] In this embodiment, the heat dissipation lamp body 2 has a heat dissipation fin group 22, an outer frame 23 and a connecting column part 24. The heat dissipation fin group 22 includes a plurality of heat dissipation fins 221, which are connected to the top of the body 21 and are distributed in a radial manner from the middle of the bottom plate 212 to the edge of the bottom plate 212. The arrangement of the heat dissipation fins 221 increases the heat exchange area between the heat dissipation lamp body 2 and the outside space, and the radial distribution of the heat dissipation fins 221 helps to guide the air flow around the heat dissipation lamp body 2, so that the heat of the heat dissipation lamp body 2 can be quickly taken away by the air, improving the heat dissipation efficiency and effectively reducing the temperature inside the heat dissipation lamp body 2. In addition, the radial distribution of the heat dissipation fins 221 can also play the role of reinforcing ribs to enhance the structural strength of the body 21, so that the wall thickness of the body 21 can be thinned as much as possible under the condition of meeting the heat dissipation requirements.

[0047] The outer frame 23 is arranged around the outer periphery of the heat dissipation fin group 22, the heat dissipation fins 221 are connected with the outer frame 23, and the outer frame 23 is arranged around the outer periphery of the body 21. The outer frame 23, the body 21 and the heat dissipation fins 221 form a ventilation flow channel 230. The ventilation flow channel 230, in combination with the design that the high-density heat generating area 2121 is close to the edge of the bottom plate 212, can increase the air flow rate at the edge of the bottom plate 212 and play a certain role in guiding air flow, accelerating heat exchange between the heat dissipation lamp body 2, the heat dissipation fins 221 and the external air, thereby improving the heat dissipation speed of the heat dissipation lamp body 2 and the heat dissipation effect of the heat dissipation lamp body 2 on the light source module 1.

[0048] The connecting column part 24 is located at the top of the body 21 and at the middle of the bottom plate 212, and a first connecting hole 241 is arranged on the connecting column part 24, which is preferably a threaded hole. The connecting column part 24 can be connected with external connecting members (such as a hanging rod) and the like, so that the installation of the lamp provided with the heat dissipation lamp body 2 is more convenient and easy to operate. It can be understood that in other embodiments, a fourth connecting hole can also be directly arranged on the body 21, which is used for connecting with an externally matched connecting support, so that the lamp can be connected with external connecting members through the connecting support, but this design may increase the cost and the complexity of the installation of the lamp to some extent.

[0049] In addition, the second connecting hole 2123 is arranged on the bottom plate 212 at the part of the heat dissipation fins 221, is recessed from the side of the bottom plate 212 facing the opening of the accommodating cavity 211 to the top of the heat dissipation lamp body 2, and matches the third connecting hole 111 on the substrate 11 of the light source module 1, so that the second connecting hole 2123 and the third connecting hole 111 can be connected through a connecting member, and then the light source module 1 is fixed on the heat dissipation lamp body 2; and the second connecting hole 2123 is arranged at the heat dissipation fin 221, which can ensure the firmness of the connection between the second connecting hole 2123 and the connecting member, does not need to increase the thickness of the bottom plate 212 as a whole, optimizes the structure of the heat dissipation lamp body 2, saves the manufacturing material of the heat dissipation lamp body 2, and reduces the cost.

[0050] In the embodiment, the heat dissipation lamp body 2 is made of aluminum alloy, and is a cast part. The heat dissipation lamp body 2 which is a cast part can realize one-time forming of the complex structure of the body 21, the bottom plate 212, the heat dissipation fin 221 and the outer frame 23 and the like with different thicknesses of the accommodating cavity 211, so that the forming of the heat dissipation lamp body 2 is simpler and more convenient, can meet the requirements of mass production, and has lower manufacturing cost. In addition, the heat dissipation lamp body 2 made of aluminum alloy can ensure the heat dissipation effect on the light source module 1. It can be understood that in some embodiments, the heat dissipation lamp body 2 can also be made of iron, and when the heat dissipation lamp body 2 is made of iron, the upper surface of the heat dissipation lamp body 2 is preferably plated with a zinc layer, or the surface of the heat dissipation lamp body 2 is preferably coated with a paint layer, so as to play a rust-proof and anti-corrosion effect, and protect the heat dissipation lamp body 2.

[0051] In combination with Figure 6 and Figure 7 Compared with the existing heat dissipation lamp body for dissipating heat from the light source module 1, the temperature of each region of the heat dissipation lamp body 2 provided by the utility model is generally about 3℃ lower than that of the corresponding region of the existing heat dissipation lamp body when dissipating heat from the light source module 1 under the same working condition, so the heat dissipation performance of the heat dissipation lamp body 2 provided by the utility model is better; wherein under the same working condition, Figure 6 is a thermal simulation false color map of the existing heat dissipation lamp body; Figure 7The heat simulation false color diagram of the heat dissipation lamp body 2 is provided.

[0052] As can be seen from the above, through the design of the heat dissipation lamp body 2 of the lamp, the light source module 1 of the lamp can be effectively cooled, and the production cost of the lamp can be reduced.

[0053] Finally, it needs to be emphasized that the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model. For the skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1.A heat-dissipating lamp body having a body provided with a receiving cavity, characterized in that: a bottom plate of the receiving cavity is divided into a high-density heat-emitting area and a non-high-density heat-emitting area, the bottom plate has a first thickness in the high-density heat-emitting area, and the bottom plate has a second thickness in the non-high-density heat-emitting area, the first thickness being greater than the second thickness. 2.The heat-dissipating lamp body according to claim 1, characterized in that: the first thickness gradually increases from a middle portion of the bottom plate to an edge of the bottom plate. 3.The heat-dissipating lamp body according to claim 2, characterized in that: in a height direction of the lamp body, a maximum height difference of the first thickness is between 0.3 mm and 1 mm. 4.The heat-dissipating lamp body according to claim 3, characterized in that: a side of the bottom plate facing an opening of the receiving cavity is a plane. 5.The heat-dissipating lamp body according to claim 2, characterized in that: the heat-dissipating lamp body is discoid-like; the high-density heat-emitting area is fan-ring-like; the high-density heat-emitting area is distributed close to the edge of the bottom plate. 6.The heat-dissipating lamp body according to claim 5, characterized in that: a central angle of the high-density heat-emitting area in the fan-ring-like shape is between 120° and 270°. 7.The heat-dissipating lamp body according to any one of claims 1 to 6, characterized in that: the heat-dissipating lamp body has a heat-dissipating fin group, the heat-dissipating fin group includes a plurality of heat-dissipating fins connected to a top of the body, and the plurality of heat-dissipating fins are distributed radially from a middle portion of the bottom plate to an edge of the bottom plate. 8.The heat-dissipating lamp body according to claim 7, characterized in that: the heat-dissipating lamp body further has an outer frame, the outer frame is arranged around an outer periphery of the heat-dissipating fin group, and the heat-dissipating fins are connected to the outer frame; the outer frame is arranged around an outer periphery of the body, and a ventilation flow channel is formed among the outer frame, the body, and the heat-dissipating fins. 9.The heat-dissipating lamp body according to claim 8, characterized in that: the heat-dissipating lamp body further has a connecting column portion, the connecting column portion is located at the top of the body and at the middle portion of the bottom plate, the connecting column portion is provided with a first connecting hole, and the bottom plate is provided with a second connecting hole at part of the heat-dissipating fins; and / or the heat-dissipating lamp body is made of aluminum alloy, or the heat-dissipating lamp body is made of iron, a zinc layer is plated on a surface of the heat-dissipating lamp body or a paint layer is coated on the surface of the heat-dissipating lamp body, the heat-dissipating lamp body is a cast part. 10.A lamp fixture including a light source having a high-density heat-emitting portion and a non-high-density heat-emitting portion, characterized in that: the lamp fixture further includes the heat-dissipating lamp body according to any one of claims 1 to 9, the light source is mounted on the bottom plate, the high-density heat-emitting portion is located in the high-density heat-emitting area, and the non-high-density heat-emitting portion is located in the non-high-density heat-emitting area.

Images