LED light source with low color temperature and high luminous efficiency

Abstract

The utility model relates to the technical field of LED light sources, and discloses a low-color-temperature high-luminous-efficiency LED light source which comprises a substrate, a light-emitting area is arranged on the substrate, a plurality of LED chips are arranged in the light-emitting area, a silicate glue layer is covered on the light-emitting area, a fluorescent glue layer is covered on the silicate glue layer, and the LED chips are arranged on the fluorescent glue layer. Light emitted by the LED chips sequentially penetrates through the silicate glue layer and the fluorescent glue layer to be transmitted to the outside. The silicate glue layer can excite the luminous efficiency emitted by the LED chip, the fluorescent glue layer can protect the silicate glue layer from being influenced by the outside, meanwhile, the silicate glue layer excites the maximum luminous efficiency, fluorescent powder in the upper fluorescent glue layer achieves the best fluorescent powder excitation effect, the light source can achieve the high luminous efficiency effect when the color temperature is low, and the luminous efficiency is high. The problem that the lighting effect of an LED light source low-color-temperature product is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED light sources, and in particular to a low color temperature and high light efficiency LED light source. Background Art

[0002] With the development of economy and society and the continuous improvement of LED lighting technology, LED lamps, known as "green lighting", have been more and more widely used in people's daily lives. Due to their high brightness, long life, fast response speed, no pollution to the environment, energy saving and power saving, they are gradually becoming the mainstream lighting fixtures today and are widely used in commercial lighting, decorative lighting, road lighting, indoor lighting and other lighting fields.

[0003] According to market research, the luminous efficiency of low color temperature products of LED light sources in the current market is generally low, which can no longer meet the luminous efficiency needs of end customers in the market. Therefore, based on market demand, a low color temperature LED with a special process has been developed and designed, which can greatly improve the luminous efficiency of existing low color temperature products of LED light sources, thereby meeting the needs of the market and end customers. Utility Model Content

[0004] The utility model aims to provide a low color temperature and high light efficiency LED light source, aiming to solve the problem of low light efficiency of low color temperature LED light source products in the prior art.

[0005] The utility model is implemented as follows: a low color temperature and high light efficiency LED light source comprises a substrate, the substrate has a light emitting area, the light emitting area is provided with a plurality of LED chips, the light emitting area is covered with a silicate glue layer, the silicate glue layer is covered with a fluorescent glue layer, and the light emitted by the plurality of LED chips is transmitted to the outside through the silicate glue layer and the fluorescent glue layer in turn.

[0006] Furthermore, the fluorescent glue layer is raised upward in a convex shape.

[0007] Furthermore, the bottom of the fluorescent glue layer abuts against the light-emitting area, and the top of the fluorescent glue layer extends upward away from the light-emitting area.

[0008] Furthermore, a dam is provided at the periphery of the light emitting area, and the dam is arranged around the circumference of the light emitting area. The dam encloses a filling area with an opening at the top, the light emitting area is located at the bottom of the filling area, and the silicate gel layer is filled in the filling area.

[0009] Furthermore, the enclosure dam is in a closed and surrounding shape.

[0010] Furthermore, the top of the silicate gel layer is not higher than the top of the dam.

[0011] Furthermore, a plurality of downwardly recessed grooves are provided on the top of the dam, and the plurality of grooves are arranged circumferentially and spaced apart along the top of the dam, and the silicate gel layer has a filling section filled on the dam, and the filling section is embedded in the grooves.

[0012] Furthermore, the slot horizontally penetrates the top of the dam, and the slot is connected to the filling area.

[0013] Furthermore, the periphery of the silicate gel layer is arranged below the top of the dam, and the upper portion of the inner side wall of the dam is exposed, forming an exposed section exposed above the silicate gel layer.

[0014] Furthermore, the fluorescent glue layer has an inner section coated on the exposed section, and the outer periphery of the fluorescent glue layer goes over the top of the dam, along the outer periphery of the dam, and wraps the outer periphery of the dam.

[0015] Compared with the prior art, the low color temperature and high light efficiency LED light source provided by the utility model can stimulate the light effect emitted by the LED chip through the silicate adhesive layer, and the fluorescent adhesive layer can protect the silicate adhesive layer from external influences. At the same time, the silicate adhesive layer stimulates the maximum light efficiency, and the fluorescent powder in the fluorescent adhesive layer above the same part achieves the best fluorescent powder excitation effect, so that the light source can achieve a high light efficiency effect at low color temperature, solving the problem of low light efficiency of low color temperature LED light source products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view cross-sectional structural schematic diagram of a low color temperature and high light efficiency LED light source provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the top view of the structure of the low color temperature and high light efficiency LED light source provided by the utility model;

[0018] Figure 3 The utility model provides Figure 1 A is an enlarged schematic diagram.

[0019] In the figure: a substrate 10 , a light emitting area 20 , an LED chip 30 , a silicate adhesive layer 40 , a fluorescent adhesive layer 50 , a dam 60 , a filling section 41 , an inner section 51 , and a slot 61 . DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] Reference Figure 1-3 As shown, it is a preferred embodiment provided by the utility model.

[0024] A low color temperature and high light efficiency LED light source includes a substrate 10, the substrate 10 has a light-emitting area 20, the light-emitting area 20 is provided with a plurality of LED chips 30, the light-emitting area 20 is covered with a silicate glue layer 40, the silicate glue layer 40 is covered with a fluorescent glue layer 50, and the light emitted by the plurality of LED chips 30 is transmitted to the outside through the silicate glue layer 40 and the fluorescent glue layer 50 in turn.

[0025] The low color temperature and high light efficiency LED light source provided above can stimulate the light effect emitted by the LED chip 30 through the silicate glue layer 40, and the fluorescent glue layer 50 can protect the silicate glue layer 40 from external influences. At the same time, the silicate glue layer 40 stimulates the maximum light efficiency, and the fluorescent powder in the fluorescent glue layer 50 above the silicate glue layer achieves the best fluorescent powder excitation effect, so that the light source can achieve a high light efficiency effect at low color temperature, solving the problem of low light efficiency of low color temperature LED light source products.

[0026] In this embodiment, the fluorescent adhesive layer 50 is convex upwards, so that the fluorescent adhesive layer 50 can realize the concentrated projection of the light source emitted from the silicate adhesive layer 40, so that the LED light source can achieve a high lighting effect.

[0027] In this embodiment, the bottom of the fluorescent glue layer 50 abuts against the light-emitting area 20, and the top of the fluorescent glue layer 50 extends upward away from the light-emitting area 20. In this way, the top of the substrate 10 will not hinder the fluorescent glue layer 50 from transmitting the light emitted by the LED chip 30 in a concentrated manner, thereby achieving a high illumination effect of the light source.

[0028] In this embodiment, a dam 60 is provided on the periphery of the light emitting region 20, and the dam 60 is arranged around the periphery of the light emitting region 20, and the dam 60 encloses a filling region with an opening at the top, and the light emitting region 20 is located at the bottom of the filling region, and the silicate adhesive layer 40 is filled in the filling region. In this way, the silicate adhesive layer 40 will not overflow the light emitting region 20, thereby increasing the protection of the silicate adhesive layer 40.

[0029] In this embodiment, the dam 60 is in a closed and surrounding shape, so as to ensure a complete seal and ensure that when the silicate glue is applied to form the silicate glue layer 40, the silicate glue will not flow out, making it difficult to form the silicate glue layer 40.

[0030] In this embodiment, the top of the silicate adhesive layer 40 is not higher than the top of the dam 60. In this way, there is space for the formation of the fluorescent adhesive layer 50, ensuring that the fluorescent adhesive layer 50 can be pressed against the silicate adhesive layer 40, ensuring the high light efficiency of the excitation light source.

[0031] In this embodiment, a plurality of downwardly concave grooves 61 are provided on the top of the dam 60, and the plurality of grooves 61 are arranged at intervals along the circumference of the top of the dam 60. The silicate adhesive layer 40 has a filling section 41 filled on the dam 60, and the filling section 41 is embedded in the grooves 61. In this way, the combination between the silicate adhesive layer 40 and the dam 60 can be made more stable.

[0032] The slot 61 horizontally passes through the top of the dam 60 , and the slot 61 is communicated with the filling area.

[0033] In this embodiment, the periphery of the silicate adhesive layer 40 is arranged below the top of the dam 60 , and the upper portion of the inner side wall of the dam 60 is exposed, forming an exposed section exposed above the silicate adhesive layer 40 .

[0034] The fluorescent glue layer 50 has an inner section 51 coated on the exposed section. The outer periphery of the fluorescent glue layer 50 goes over the top of the dam 60 , along the outer periphery of the dam 60 , and wraps the outer periphery of the dam 60 .

[0035] In this way, the overall structure is compact, forming a complete fluorescent glue layer 50 to wrap the light-emitting area 20 and the dam 60, completely sealing the gap between the dam 60 and the silicate glue layer 40, increasing the protection of the fluorescent glue layer 50 to the silicate glue layer 40, and increasing the bonding between the fluorescent glue layer 50 and the dam 60 to be more stable.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Low color temperature and high light efficiency LED light source, characterized in that: It includes a substrate, the substrate has a light-emitting area, the light-emitting area is provided with a plurality of LED chips, the light-emitting area is covered with a silicate glue layer, the silicate glue layer is covered with a fluorescent glue layer, and the light emitted by the plurality of LED chips is transmitted to the outside through the silicate glue layer and the fluorescent glue layer in turn.

2. The low color temperature and high light efficiency LED light source according to claim 1, characterized in that: The fluorescent glue layer protrudes upwards in a convex shape.

3. The low color temperature and high light efficiency LED light source as claimed in claim 2, characterized in that: The bottom of the fluorescent glue layer abuts against the light-emitting area, and the top of the fluorescent glue layer extends upward away from the light-emitting area.

4. The low color temperature and high light efficiency LED light source according to any one of claims 1 to 3, characterized in that: A dam is provided at the periphery of the light emitting area. The dam is arranged around the circumference of the light emitting area. The dam encloses a filling area with an opening at the top. The light emitting area is located at the bottom of the filling area, and the silicate glue layer is filled in the filling area.

5. The low color temperature and high light efficiency LED light source as claimed in claim 4, characterized in that: The enclosure dam is in a closed and surrounding shape.

6. The low color temperature and high light efficiency LED light source as claimed in claim 5, characterized in that: The top of the silicate gel layer is not higher than the top of the dam.

7. The low color temperature and high light efficiency LED light source according to claim 6, characterized in that: A plurality of downwardly recessed grooves are arranged on the top of the dam, and the grooves are arranged circumferentially and spaced apart along the top of the dam. The silicate gel layer has a filling section filled on the dam, and the filling section is embedded in the grooves.

8. The low color temperature and high light efficiency LED light source according to claim 7, characterized in that: The slot horizontally penetrates the top of the dam, and the slot is communicated with the filling area.

9. The low color temperature and high light efficiency LED light source according to claim 8, characterized in that: The outer periphery of the silicate gel layer is arranged below the top of the dam, and the upper portion of the inner side wall of the dam is exposed, forming an exposed section exposed above the silicate gel layer.

10. The low color temperature and high light efficiency LED light source according to claim 9, characterized in that: The fluorescent glue layer has an inner section coated on the exposed section, and the outer periphery of the fluorescent glue layer goes over the top of the dam, along to the outer periphery of the dam, and wraps the outer periphery of the dam.

Images