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Sealed LED lamp

A technology of LED lamp and sealant, applied in the field of lighting, can solve the problem that it is difficult to completely prevent the intrusion of water vapor and dust, and achieve the effect of good sealing and bonding effect, good bonding performance and high viscosity

Active Publication Date: 2013-11-20
NINGBO AISHI ELECTRIC EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patents all improve the sealing performance of LED lamps by means of structural improvement. However, since water vapor and dust are substances with very small particles, it is difficult to completely prevent the intrusion of water vapor and dust by improving structural sealing.

Method used

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  • Sealed LED lamp
  • Sealed LED lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The composition and parts by weight ratio of sealant 100 are:

[0044] 100 parts of polyurethane;

[0045] Acrylate 12 parts;

[0046] 10 parts of oleic acid ester;

[0047] Dioctyl phthalate 30 parts;

[0048] Active nano calcium carbonate 1 part.

[0049] The above-mentioned sealant is passed such as figure 2 The preparation scheme shown prepares:

[0050] S1: After preparing the raw materials according to the above formula ratio, mix polyurethane, activated nano-calcium carbonate and oleic acid ester evenly, heat to 70 degrees Celsius and react for 10-30 minutes, then vacuumize;

[0051] S2: Add acrylate, stir and react for 5-10 minutes, then vacuumize;

[0052] S3: adding dioctyl phthalate, stirring and reacting for 5-10 minutes, then dehydrating and vacuumizing to obtain a finished product.

[0053] The viscosity, surface dry time and tensile strength of the final prepared sealant were tested, and the test data obtained are shown in Table 1.

[0054] Among...

Embodiment 2

[0056] The composition and parts by weight ratio of sealant 100 are:

[0057] 100 parts of polyurethane;

[0058] Acrylate 13 parts;

[0059] 15 parts of oleic acid ester;

[0060] Dioctyl phthalate 40 parts;

[0061] Active nanometer calcium carbonate 3 parts.

[0062] The above-mentioned sealant is passed such as figure 2 The preparation scheme shown prepares:

[0063] S1: After preparing the raw materials according to the above formula ratio, mix polyurethane, activated nano-calcium carbonate and oleic acid ester evenly, heat to 85 degrees Celsius and react for 20 minutes, then vacuumize;

[0064] S2: Add acrylate and stir for reaction for 8 minutes, then vacuumize;

[0065] S3: adding dioctyl phthalate and stirring for 6 minutes, then dehydrating and vacuumizing to obtain a finished product.

[0066] The viscosity, surface dry time and tensile strength of the final prepared sealant were tested, and the test data obtained are shown in Table 1.

Embodiment 3

[0068] The composition and parts by weight ratio of sealant 100 are:

[0069] 100 parts of polyurethane;

[0070] Acrylate 15 parts;

[0071] 20 parts of oleic acid ester;

[0072] Dioctyl phthalate 50 parts;

[0073] Active nanometer calcium carbonate 5 parts.

[0074] The above-mentioned sealant is passed such as figure 2 The preparation scheme shown prepares:

[0075] S1: After preparing raw materials according to the above formula ratio, mix polyurethane, activated nano-calcium carbonate and oleic acid ester evenly, heat to 90 degrees Celsius and react for 10 minutes, then vacuumize;

[0076] S2: add acrylate, stir and react for 5 minutes, then vacuumize;

[0077] S3: adding dioctyl phthalate and stirring for 5 minutes, then dehydrating and vacuumizing to obtain a finished product.

[0078] The viscosity, surface dry time and tensile strength of the final prepared sealant were tested, and the test data obtained are shown in Table 1.

[0079] Test Data

[0080] Ta...

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Abstract

The invention provides a sealed LED lamp comprising a lamp shell, a substrate, an LED lighting module disposed on the substrate, a lamp shade, and a radiator disposed below the substrate. Both the substrate and the radiator are provided with through holes allowing power cords to pass. The radiator is hermetically connected with the substrate through sealant. The sealant comprises, by weight, 100 parts of polyurethane, 12-15 parts of acrylate, 10-20 parts of oleate, 30-50 parts of dioctyl phthalate, and 1-5 parts of activated nano calcium carbonate. The sealant made from specially selected materials is good in mechanical property and adhesion, allows the radiator and the lamp shell to be hermetically adhered effectively, and prevents moisture, dust and the like from entering the LED lamp from a gap between the radiator and the shell to impair the lifetime of the LED lamp.

Description

Technical field: [0001] The invention relates to the technical field of lighting, in particular to an LED lamp with good sealing performance. Background technique: [0002] LED lights have the advantages of energy saving and environmental protection, and the development of the lighting industry has become a major trend. Most of the current LED lights are suitable for traditional fields. For the use environment that requires waterproof and dustproof, the current LED lights may not be very suitable, so the existing LED lights are used in humid or dusty environments. Shorter lifespan. [0003] Existing patent documents, for example, the Chinese patent "Sealed Waterproof LED Lamp" with publication number CN201521934U discloses a sealed waterproof LED lamp, which is provided with a sealing hole on the base, and a pad is arranged in the sealing hole, and the pad is pressed tightly on the Sealing the inside of the hole makes the LED lamp have a better sealing effect. [0004] An...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V31/00C09J4/06C09J4/02C09J11/04C09K3/10F21Y101/02
Inventor 戴文良
Owner NINGBO AISHI ELECTRIC EQUIP