Double layer insulation lava lamp

Abstract

The utility model relates to a double -deck heat -proof lava lamp, including lamp vessel body, heating assembly and light source subassembly, the heating assembly fast heating transparent liquid and waxy in lamp vessel body, make waxy fast melt and form wax ball, in the lamp vessel up and down float, because the lamp vessel body adopts double -deck heat -proof structure, has effectively blocked the heat in the inside of inner glass tube to the outside conduction, has improved the thermal efficiency of heating assembly. Meanwhile, because the interval that fills air exists between the inner glass tube with the outer heat -proof pipe, air and glass are all bad conductor of heat, therefore, the heat in the inner glass tube is not easy to transfer to the pipe wall of outer heat -proof pipe, makes the temperature of lava lamp keep in the safe range, and when the lava lamp is touched by the human hand, will not cause scald, plays good protection effect to human body.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, specifically to a double-layer heat-insulated lava lamp. Background Technology

[0002] Lava lamps are made by filling a sealed glass bottle with a transparent liquid and wax, which is then heated on a base. The wax inside the glass bottle appears to flow like lava, floating up and down using physical principles to create a dynamic and ever-changing effect of light and shadow. This is a highly mesmerizing and globally popular form of mood lighting for indoor spaces.

[0003] Lava lamps, which create light and shadow effects by heating wax and illuminating it, easily attract children's interest. However, lava lamps need to maintain a high temperature for extended periods during operation; the temperature inside the heating and lighting chambers often exceeds 200 degrees Celsius. The bulbs or heating elements are not sealed, allowing direct contact with the hands. The glass container or lamp body also exceeds 55 degrees Celsius. Although there are disclaimers on the outer wall of the lava lamp stating "Extremely hot! Don't touch while operating," children or pets may not see or understand these warnings. Driven by curiosity, children could easily remove the glass container and touch the heating element directly, resulting in severe burns. Even if they notice the warning label, touching the lamp body still poses a significant risk of burning their hands and causing fright. Utility Model Content

[0004] In view of this, it is necessary to provide a double-layer heat-insulated lava lamp with good heat insulation effect and high heating efficiency.

[0005] A double-layered heat-insulated lava lamp includes a lamp tube body, a heating component, and a light source component. The lamp tube body comprises an inner glass tube and an outer heat-insulating tube. The inner glass tube has a closed bottom surface and is filled with a transparent liquid and an ornamental wax. The heating component and the light source component are located at the bottom of the inner glass tube. The heating component heats the wax, and the wax ball formed after melting can float up and down inside the inner glass tube. The light source component illuminates the lamp tube body, making the lamp tube body completely transparent. The outer heat-insulating tube is sleeved on the outside of the inner glass tube to block internal heat transfer and prevent burns.

[0006] Preferably, the inner glass tube has a closed bottom surface and an upward opening, the outer heat insulation tube is a transparent tube, the outer heat insulation tube and the inner glass tube are coaxially arranged, there is a predetermined gap between the sidewalls of the outer heat insulation tube and the inner glass tube, and the gap between the sidewalls of the outer heat insulation tube and the inner glass tube is filled with air.

[0007] Preferably, an annular spring is provided at the bottom of the inner glass tube, which is used to allow the melted wax to re-fuse at the bottom of the inner glass tube to form a natural flow effect.

[0008] Preferably, the lamp tube body further includes a top cover, the top cover having a circular sidewall surrounding the perimeter, the top end sidewall of the outer heat insulation tube abutting against the inner sidewall of the top cover; the top cover has a raised frustum in the center of its interior, the outer sidewall of the frustum has an external thread, the inner sidewall of the inner glass tube has an internal thread near its top end, and the top end of the inner glass tube is threadedly connected to the inner frustum of the top cover; The bottom surface of the truncated cone facing the inner glass tube is a polished mirror surface to reflect the light emitted by the light source assembly, so that there are no dark areas inside the lamp tube body and the top of the wax ball, making the whole thing crystal clear.

[0009] Preferably, the heating assembly includes a heating element and a heat-conducting cup. The heat-conducting cup is fitted onto the bottom end of the inner glass tube. The height of the heat-conducting cup is at least two-thirds greater than the height of the solidified wax inside the inner glass tube. The heating element is attached between the outer bottom of the inner glass tube and the inner bottom of the heat-conducting cup.

[0010] Preferably, the bottom center of the heat-conducting cup has a recessed step, the recessed height of which is adapted to the thickness of the heating element. The heating element is disposed within the recessed step, and thermal grease is provided on both the top and bottom surfaces of the heating element. The thermal grease is used to improve the heating conduction efficiency between the heating element, the inner glass tube, and the heat-conducting cup.

[0011] Preferably, the light source assembly includes a central light source and a peripheral light source, the peripheral light source surrounding the outside of the central light source, the central light source using high-power LED beads, and the peripheral light source using multiple low-power LED beads, the multiple low-power LED beads being arranged around the high-power LED beads.

[0012] Preferably, the heating element and the heat-conducting cup have a central hole at the bottom center, and the bottom of the heat-conducting cup is provided with a plurality of light-transmitting holes. The size, position and number of the central hole and the plurality of light-transmitting holes correspond to the size, position and number of the central light source and the peripheral light source.

[0013] Preferably, the light source assembly further includes a remote control receiving module, which is used to receive control signals from a remote controller to adjust the color and brightness of the central light source and the peripheral light source.

[0014] Preferably, the lava lamp further includes a bottom housing, which is located below the lamp tube body, and the heating assembly and the light source assembly are located inside the bottom housing; The inner wall of the bottom shell has a raised step near the top, and the bottom end of the outer heat insulation tube abuts against the step; The bottom shell has a toothed tube at the center of its bottom surface. The toothed tube is used to connect the bottom shell and the base. The base has a predetermined counterweight to ensure that the lava lamp is placed stably.

[0015] In the aforementioned double-layer insulated lava lamp, the heating component rapidly heats the transparent liquid and wax inside the lamp tube body, causing the wax to melt quickly and form wax balls that float up and down inside the lamp tube. Because the lamp tube body employs a double-layer insulated structure, it effectively prevents heat from the inner glass tube from being conducted to the outside, improving the thermal efficiency of the heating component and shortening the preheating time of the lava lamp. This allows the heating component to maintain normal operation of the lava lamp with a lower output power, thus improving the working efficiency of the heating component and reducing its energy consumption. Simultaneously, the inner glass tube and the outer insulated tube have an air-filled gap. Since both air and glass are poor conductors of heat, heat from the inner glass tube is not easily transferred to the wall of the outer insulated tube, keeping the temperature of the lava lamp within a safe range. The heating element is sealed and cannot be touched by hand, preventing burns when touching the lava lamp and providing excellent protection for the human body. This invention has a simple structure, is easy to implement, safe and reliable, has low overall cost, and is easy to promote. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the double-glazed heat-insulating intelligent temperature-controlled integrated lava lamp according to an embodiment of the present invention.

[0017] Figure 2 This is an exploded view of the structure of the double-glazed heat-insulating intelligent temperature-controlled integrated lava lamp according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the inner glass tube and outer heat insulation tube of the double-glazed heat-insulating intelligent temperature-controlled integrated lava lamp according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the top cover of the double-glazed heat-insulating intelligent temperature-controlled integrated lava lamp according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the bottom shell structure of the double-glazed heat-insulating intelligent temperature-controlled integrated lava lamp according to an embodiment of the present invention.

[0021] Figure 6This is a schematic diagram of the heat-conducting cup of the double-glazed heat-insulating intelligent temperature-controlled integrated lava lamp according to an embodiment of the present invention.

[0022] Explanation of symbols for key components in the attached diagram: 100, Lava Lamp; 10, Lamp Body; 11, Inner Glass Tube; 12, Outer Insulation Tube; 13, Annular Spring; 14, Sealing Gasket; 15, Top Cover; 151, Boss; 152, Annular Edge; 153, Circle; 16, Transparent Liquid; 17, Wax; 21, Heating Plate; 22, Heat-Conducting Cup; 221, Center Hole; 222, Recessed Step; 223, Light Transmitting Hole; 224, Detection Hole; 225, Edge of Heat-Conducting Cup; 3 1. Temperature control probe; 311. Temperature sensing end; 40. Light source assembly; 41. Central light source; 42. Peripheral light source; 50. Intelligent control circuit board; 60. First heat insulation cotton; 70. Second heat insulation cotton; 81. Glass cover; 82. Phillips countersunk screw; 83. Double-through isolation post; 84. Isolation post; 85. Phillips round head screw; 86. Bottom housing; 861. Step on the inner side of the bottom housing; 862. Bottom surface of the bottom housing; 87. Dental tube. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0024] Please see Figures 1 to 6 This invention illustrates a double-layered heat-insulated lava lamp 100, comprising a lamp tube body 10, a heating assembly, and a light source assembly 40. The lamp tube body 10 includes an inner glass tube 11 and an outer heat-insulating tube 12. The inner glass tube 11 has a closed bottom surface and is filled with a transparent liquid 16 and an ornamental wax 17. The heating assembly and the light source assembly 40 are located at the bottom of the inner glass tube 11. The heating assembly is used to heat the wax 17, and the wax ball formed by the melting of the wax 17 can float up and down inside the inner glass tube 11. The light source assembly 40 is used to irradiate the lamp tube body, making the lamp tube body 10 completely transparent. The outer heat-insulating tube 12 is sleeved on the outside of the inner glass tube 11 to block the internal heat transfer and prevent burns to personnel.

[0025] Preferably, the inner glass tube 11 has a closed bottom surface and an upward opening, the outer heat insulation tube 12 is a transparent tube, the outer heat insulation tube 12 and the inner glass tube 11 are coaxially arranged, there is a predetermined gap between the sidewall of the outer heat insulation tube 12 and the inner glass tube 11, and the gap between the sidewall of the outer heat insulation tube 12 and the inner glass tube 11 is filled with air.

[0026] Specifically, the bottom end of the inner glass tube 11 is completely sealed, and the heated transparent liquid 16 and wax 17 are contained inside the inner glass tube 11. The air between the outer heat insulation tube 12 and the inner glass tube 11 provides good heat insulation.

[0027] Specifically, in this embodiment, the transparent liquid 16 is preferably pure water, and the wax 17 is solid at room temperature and condenses at the bottom of the inner glass tube 11 to form columnar wax 17. After being heated to a predetermined temperature, the wax 17 melts into a liquid state, forming wax balls that float up and down in the transparent liquid 16.

[0028] Specifically, the lamp tube body 10 ensures that the temperature inside the inner glass tube 11 is not easily lost, resulting in good heat preservation. When the wax ball floats normally, the lava lamp enters the intelligent temperature control and heat preservation stage, requiring only extremely low power heating to compensate for heat loss, allowing the lava lamp to be lit for a long time and saving energy.

[0029] Specifically, the lamp tube body 10 can also effectively prevent the external environment from affecting the transparent liquid 16 and wax 17 inside the inner glass tube 11. During transportation, the high temperature inside the container may cause the wax 17 inside the glass tube to melt, affecting the clarity of the transparent liquid 16.

[0030] Specifically, in this embodiment, the inner glass tube 11 and the outer heat insulation tube 12 are preferably high borosilicate glass. High borosilicate glass has the advantages of extremely low coefficient of thermal expansion, strong thermal shock resistance, corrosion resistance, high light transmittance and high cleanliness. It is not easily broken by sudden temperature changes and has strong chemical stability, which makes the lamp tube body 10 have a longer service life and better light transmittance.

[0031] Specifically, the outer heat insulation tube 12 can be made of glass or plastic.

[0032] Preferably, an annular spring 13 is provided at the bottom inner side of the inner glass tube 11. The annular spring 13 is used to re-fuse the melted wax 17 at the bottom of the inner glass tube 11 to form a natural flow effect.

[0033] Preferably, the lamp tube body 10 further includes a top cover 15, the top cover 15 having a circular sidewall surrounding the perimeter, the top end sidewall of the outer heat insulation tube 12 abutting against the inner sidewall of the top cover 15; the top cover 15 has a raised frustum 153 in the center of its interior, the outer sidewall of the frustum 153 has an external thread, the inner sidewall of the inner glass tube 11 has an internal thread near its top end, and the top end of the inner glass tube 11 is threadedly connected to the inner frustum 153 of the top cover 15; The bottom surface of the truncated cone 153 facing the inner glass tube 11 is a polished mirror surface to reflect the light emitted by the light source assembly 40, so that there are no dark areas inside the lamp tube body 10 and the top of the wax ball, making the whole thing crystal clear.

[0034] Specifically, the top surface of the top cover 15 has a boss 151. The boss 151 and the frustum 153 are respectively provided on the upper and lower sides of the top surface of the top cover 15. The diameter of the frustum 153 is smaller than the diameter of the boss 151. The frustum 153 is located in the center of the boss 151. There is a gap between the inner sidewall of the boss 151 and the outer sidewall of the frustum 153. The inner glass tube 11 has an internal thread on the inner side of its top end. The frustum 153 has an external thread. The inner glass tube 11 is threaded onto the frustum 153. The top end of the inner glass tube 11 is provided with a sealing gasket 14. The sealing gasket 14 is preferably made of silicone to increase the sealing between the top cover 15 and the inner glass tube 11 and prevent the transparent liquid 16 inside the inner glass tube 11 from leaking out.

[0035] Specifically, on the top surface of the top cover 15, the boss 151 has an annular edge 152 around it, and the top end of the outer heat insulation tube 12 abuts against the inner side of the annular edge 152, so that the interval between the outer heat insulation tube 12 and the inner glass tube 11 corresponds to the width of the annular edge 152.

[0036] Specifically, the bottom surface of the top cover 15 is in contact with the transparent liquid 16 inside the inner glass tube 11, giving the top cover 15 a certain heat dissipation function. Due to the heat dissipation function of the top cover 15, the temperature of the transparent liquid 16 at the top of the inner glass tube 11 is lower than the temperature of the transparent liquid 16 at the bottom.

[0037] Preferably, the heating assembly includes a heating element 21 and a heat-conducting cup 22. The heat-conducting cup 22 is sleeved on the bottom end of the inner glass tube 11. The height of the heat-conducting cup 22 is at least two-thirds greater than the height of the solidified wax 17 inside the inner glass tube 11. The heating element 21 is attached between the outer bottom of the inner glass tube 11 and the inner bottom of the heat-conducting cup 22.

[0038] Preferably, the bottom center of the heat-conducting cup 22 has a recessed step 222, the recessed height of which is adapted to the thickness of the heating element 21. The heating element 21 is disposed within the recessed step 222. Thermal grease is provided on both the top and bottom surfaces of the heating element 21. The thermal grease is used to improve the heating conduction efficiency between the heating element 21 and the inner glass tube 11 and the heat-conducting cup 22.

[0039] Specifically, the heat-conducting cup 22 has a U-shaped cross-section and is wrapped around the end of the inner glass tube 11. The side wall of the heat-conducting cup 22 extends between the side wall of the inner glass tube 11 and the side wall of the outer heat insulation tube 12, and is tightly fitted with the outer side wall of the inner glass tube 11 to conduct the heat generated by the heating element 21 to the inner glass tube 11.

[0040] Specifically, the heating element 21 is wrapped between the inner glass tube 11 and the heat-conducting cup 22, directly conducting heat to both the inner glass tube 11 and the heat-conducting cup 22, resulting in more efficient heating. On the bottom surface of the heat-conducting cup 22, the outer circumferential surface of the recessed step 222 is in close contact with the bottom surface of the inner glass tube 11. By increasing the contact area between the heat-conducting cup 22 and the inner glass tube 11, heat is rapidly conducted to the inner glass tube 11. Meanwhile, the sidewall of the heat-conducting cup 22 has a predetermined height. The height of the heat-conducting cup 22 is greater than two-thirds of the height of the solidified wax 17 inside the inner glass tube 11, and less than the height of the solidified wax 17. This allows most of the solidified wax 17 to be enclosed by the heat-conducting cup 22. The heating element 21 and the heat-conducting cup 22 simultaneously heat the bottom and surrounding area of ​​the solidified wax 17, which can quickly melt the entire solidified wax 17, allowing the top wax to break through quickly, and quickly heating the transparent liquid 16 and the wax 17. This shortens the time required to trigger the wax 17 to float and the wax ball to float, avoiding the long waiting time common in existing lava lamps.

[0041] Specifically, the top of the sidewall of the heat-conducting cup 22 has an outwardly extending edge 225, which extends from the outer sidewall near the inner glass tube 11 to the inner sidewall of the outer heat insulation tube 12, dividing the space between the inner glass tube 11 and the outer heat insulation tube 12 into two parts, so as to reduce the upward diffusion of heat generated by the sidewall of the heat-conducting cup 22.

[0042] Specifically, there is a very small annular gap between the edge 225 and the inner wall of the outer heat insulation tube 12, so as to prevent the air between the inner glass tube 11 and the outer heat insulation tube 12 from being subjected to excessive air pressure when the air expands and contracts with temperature, and at the same time, to prevent excessive heat from diffusing to the light source assembly 40 below.

[0043] Preferably, the light source assembly 40 includes a central light source 41 and a peripheral light source 42. The peripheral light source 42 surrounds the outside of the central light source 41. The central light source 41 uses high-power LED beads, and the peripheral light source 42 uses multiple low-power LED beads, which are arranged around the high-power LED beads.

[0044] Preferably, the heating element 21 and the heat-conducting cup 22 have a central hole 221 at the bottom center, and the heat-conducting cup 22 has a plurality of light-transmitting holes 223 around the bottom. The size, position and number of the central hole 221 and the plurality of light-transmitting holes 223 correspond to the size, position and number of the central light source 41 and the peripheral light source 42.

[0045] Specifically, the light source assembly 40 is located below the heat-conducting cup 22. The light from the peripheral light source 42 needs to pass through the light-transmitting holes 223 at the bottom of the heat-conducting cup 22, and the light from the central light source 41 needs to pass through the central hole 221 at the bottom of the heat-conducting cup 22 and the central hole 221 of the heating element 21. Before the solid wax 17 melts, the light from the central light source 41 is blocked by the solid wax 17, and the light from the peripheral light source 42 shines on the side wall of the inner glass tube 11, making the lamp tube body 10 appear bright and clear before the solid wax 17 melts. After the solid wax 17 melts, the light from the central light source 41 illuminates the inside of the inner glass tube 11. At the same time, the light reflected and refracted by the side wall of the inner glass tube 11 and the top cover 15 makes the transparent liquid 16 and the melted wax ball inside the lamp tube body 10 appear bright and clear.

[0046] Preferably, the light source assembly 40 further includes a remote control receiving module, which is used to receive control signals from a remote controller to adjust the color and brightness of the central light source 41 and the peripheral light source 42.

[0047] Specifically, in this embodiment, the light source component 40 is mounted on a PCB circuit board, and the remote control receiver module uses RGB control technology to mix different colors by adjusting the brightness ratio of the three primary colors: red, green, and blue. The RGB LED consists of three independent LED chips, and the brightness of each color channel is controlled by PWM technology to achieve precise adjustment from 0 to 255 levels.

[0048] Preferably, the lava lamp further includes a bottom housing 86, which is located below the lamp tube body 10. The heating assembly and the light source assembly 40 are located inside the bottom housing 86. The inner sidewall of the bottom housing 86 has a raised step 861 near the top, and the bottom end of the outer heat insulation tube 12 abuts against the step 861. A toothed tube 87 is provided in the center of the bottom surface 862 of the bottom housing 86. The toothed tube 87 is used to connect the bottom housing 86 and the base. The base has a predetermined counterweight to ensure stable placement of the lava lamp.

[0049] Specifically, in this embodiment, the bottom housing 86 is preferably made of metal to conduct the heat generated by the heating component and the light source component 40 into the air, thereby preventing the components of the heating component and the light source component 40 from overheating.

[0050] Specifically, the top portion of the bottom housing 86 is adhered to the outer heat insulation tube 12, thus fixing the lamp tube body 10 to the bottom housing 86 and preventing separation. This avoids exposing the heating element 21 after the lamp tube body 10 is removed, which could cause burns. Simultaneously, the bottom housing 86 is in direct contact with the outer heat insulation tube 12 of the lamp tube body 10, but not with the inner glass tube 11 or the heating element 21, preventing the bottom housing 86 from overheating.

[0051] Specifically, the top cover 15 adopts a double-layered, airtight structure. There is a heat-insulating gap between the outer heat-insulating tube 12 and the inner glass tube 11, and a sealing gasket 14 is provided between the inner glass tube 11 and the top cover 15. The sealing gasket 14 has a sealing and heat-insulating function, preventing the top cover 15 from overheating. Additionally, a glass cover (not shown) can be installed on top of the lava lamp, covering the top cover 15 to further enhance the heat insulation effect.

[0052] Specifically, when the lava lamp 100 is working normally, the transparent liquid 16 inside the inner glass tube 11 is stably maintained between 48 and 56 degrees Celsius, so that the temperature of the outer heat insulation tube 12 is close to the human body temperature. Therefore, the double-layer heat insulation structure can prevent burns caused by human hands touching the lava lamp. The glass cover and the bottom shell 86 are only in direct contact with the outer heat insulation tube 12, and their temperature is maintained within a safe range to prevent burns when human hands touch them.

[0053] Specifically, in other embodiments, the bottom housing 86 and the glass cover on top of the lava lamp are fitted with structural components made of metal or plastic to prevent the glass tube from breaking due to impact when tilted.

[0054] In the aforementioned double-layer insulated lava lamp, the heating component rapidly heats the transparent liquid and wax inside the lamp tube body, causing the wax to melt quickly and form wax balls that float up and down inside the lamp tube. Because the lamp tube body employs a double-layer insulated structure, it effectively prevents heat from the inner glass tube from being conducted to the outside, improving the thermal efficiency of the heating component and shortening the preheating time of the lava lamp. This allows the heating component to maintain normal operation of the lava lamp with a lower output power, thus improving the working efficiency of the heating component and reducing its energy consumption. Simultaneously, the inner glass tube and the outer insulated tube have an air-filled gap. Since both air and glass are poor conductors of heat, heat from the inner glass tube is not easily transferred to the wall of the outer insulated tube, keeping the temperature of the lava lamp within a safe range. The heating element is sealed and cannot be touched by hand, preventing burns when touching the lava lamp and providing excellent protection for the human body. This invention has a simple structure, is easy to implement, safe and reliable, has low overall cost, and is easy to promote.

[0055] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and these changes made based on the inventive spirit of this utility model should be included within the scope of protection claimed by this utility model.

Claims

1. A double-layer heat-insulating lava lamp, characterized in that, The device includes a lamp tube body, a heating assembly, and a light source assembly. The lamp tube body comprises an inner glass tube and an outer heat insulation tube. The inner glass tube has a closed bottom surface and is filled with a transparent liquid and an ornamental wax. The heating assembly and the light source assembly are located at the bottom of the inner glass tube. The heating assembly heats the wax, and the wax ball formed after melting can float up and down inside the inner glass tube. The light source assembly illuminates the lamp tube body, making it completely transparent. The outer heat insulation tube is fitted over the outer side of the inner glass tube to block internal heat transfer and prevent burns.

2. The double-layer heat-insulating lava lamp as described in claim 1, characterized in that, The inner glass tube has a closed bottom surface and an upward opening. The outer heat insulation tube is a transparent tube. The outer heat insulation tube and the inner glass tube are coaxially arranged. There is a predetermined gap between the sidewalls of the outer heat insulation tube and the inner glass tube. The gap between the sidewalls of the outer heat insulation tube and the inner glass tube is filled with air.

3. The double-layer heat-insulating lava lamp as described in claim 1, characterized in that, The inner bottom of the inner glass tube is provided with a ring spring, which is used to allow the melted wax to re-fuse at the bottom of the inner glass tube to form a natural flow effect.

4. The double-layer heat-insulating lava lamp as described in claim 1, characterized in that, The lamp tube body also includes a top cover, which has a circular sidewall surrounding the four sides. The top sidewall of the outer heat insulation tube abuts against the inner sidewall of the top cover. The top cover has a raised frustum in the center of its interior. The sidewall of the frustum has an external thread, and the inner sidewall of the inner glass tube has an internal thread near its top. The top of the inner glass tube is threaded to the inner frustum of the top cover. The bottom surface of the truncated cone facing the inner glass tube is a polished mirror surface to reflect the light emitted by the light source assembly, so that there are no dark areas inside the lamp tube body and the top of the wax ball, making the whole thing crystal clear.

5. The double-layer heat-insulating lava lamp as described in claim 1, characterized in that, The heating assembly includes a heating element and a heat-conducting cup. The heat-conducting cup is fitted onto the bottom end of the inner glass tube. The height of the heat-conducting cup is at least two-thirds greater than the height of the solidified wax inside the inner glass tube. The heating element is attached between the outer bottom of the inner glass tube and the inner bottom of the heat-conducting cup.

6. The double-layer heat-insulating lava lamp as described in claim 5, characterized in that, The bottom center of the heat-conducting cup has a recessed step, the recessed height of which is adapted to the thickness of the heating element. The heating element is disposed within the recessed step, and thermal grease is applied to both the top and bottom surfaces of the heating element. The thermal grease is used to improve the heating conduction efficiency between the heating element, the inner glass tube, and the heat-conducting cup.

7. The double-layer heat-insulating lava lamp as described in claim 5, characterized in that, The light source assembly includes a central light source and a peripheral light source. The peripheral light source surrounds the central light source. The central light source uses high-power LED beads, and the peripheral light source uses multiple low-power LED beads, which are arranged around the high-power LED beads.

8. The double-layer heat-insulating lava lamp as described in claim 7, characterized in that, The heating element and the heat-conducting cup have a central hole at the bottom center, and the bottom of the heat-conducting cup is surrounded by multiple light-transmitting holes. The size, position, and number of the central hole and the multiple light-transmitting holes correspond to the size, position, and number of the central light source and the peripheral light source.

9. The double-layer heat-insulating lava lamp as described in claim 7, characterized in that, The light source assembly also includes a remote control receiving module, which is used to receive control signals from a remote controller to adjust the color and brightness of the central light source and the peripheral light source.

10. The double-layer heat-insulating lava lamp as described in claim 1, characterized in that, The lava lamp also includes a bottom housing, which is located below the lamp tube body, and the heating assembly and the light source assembly are located inside the bottom housing; The inner wall of the bottom shell has a raised step near the top, and the bottom end of the outer heat insulation tube abuts against the step; The bottom shell has a toothed tube at the center of its bottom surface. The toothed tube is used to connect the bottom shell and the base. The base has a predetermined counterweight to ensure that the lava lamp is placed stably.

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