TWI408307B - Led lamp - Google Patents

Abstract

The utility model relates to an LED (light-emitting diode) lamp, which comprises a light guide piece, a luminous body and a light transmission layer; the light guide piece is provided with an accommodating hole, a light gathering part, a fully reflecting surface and a lead-out surface; the accommodating hole is formed at one end of the light guide piece, the light gathering part is formed on inner end surface of the accommodating hole, the fully reflecting surface is formed on the peripheral surface of the light guide piece, and the lead-out surface is connected with the fully reflecting surface; the luminous body is provided with a base board and an LED luminous source, the LED luminous source is arranged on the base board, the base board is assembled in the accommodating hole of the light guide piece, and the LED luminous source faces to the light gathering part of the light guide piece; and the light transmission layer has a fluorescence layer and is combined with the light guide piece. The utility model provides an LED lamp with high luminance, uniform light color, no obvious dizzy light, stable luminous color and better heat dissipation effect.

Description

LED light fixture

The invention relates to an LED lamp, in particular to an LED lamp which improves the efficiency of use of the lamp.

Since the Light Emitting Diode (LED) is a kind of cold light source with energy saving, environmental protection and long service life, the white light emitting diode is gradually adopted as the light source of the lighting fixture, and the ultraviolet light or blue light is used to excite the fluorescent light. The way of light powder has the advantages of low cost, simple control circuit design and easy light mixing, and has gradually become the mainstream of the market.

Referring to FIG. 1 , the first conventional LED package structure 9 includes a substrate 91 , an illuminator 92 , a phosphor layer 93 , and a package 94 . The illuminator 92 is disposed, and the illuminating layer 93 covers the illuminant 92. The encapsulant 94 encloses the luminescent layer 93 and has a hemispherical shape. When the conventional LED package structure 9 is used, the illuminator 92 emits light, and the phosphor layer 93 is excited to generate white light. However, since the thickness of the phosphor layer 93 is not uniform, the color of the light color is unevenly formed. Further, since the phosphor layer 93 directly covers the illuminator 92, the illuminant 92 and The phosphor layer 93 is encapsulated in the package body 94. Therefore, the heat dissipation effect of the conventional LED package structure 9 is not good, and the phosphor layer 93 is susceptible to deterioration due to the illumination temperature of the illuminator 92. Causes the problem of luminescent color change and insufficient illuminance.

Referring to FIGS. 2a and 2b, the second embodiment of the second conventional light-emitting diode package 8 includes a substrate 81, an illuminator 82, a first package 83, and a first embodiment. a phosphor layer 84 and a second package body 85. The substrate 81 is provided with the illuminant 82. The first package body 83 covers the illuminant 82. The phosphor layer 84 covers the first package body 83. The second package 85 encapsulates the phosphor layer 84 and has a hemispherical shape. The light-emitting diode package structure 8 also emits white light by the light-emitting layer 82, and the first package body 83 is spaced between the phosphor layer 84 and the light-emitting body 82. The phosphor layer 84 is still very close to the illuminator 82, and the illuminant 82, the first package 83 and the phosphor layer 84 are all encapsulated in the second package 85, so that the conventional LED package structure 8 The heat dissipation effect is poor, and the phosphor layer 84 is susceptible to the illumination temperature of the illuminant 82.

Referring to FIGS. 3a and 3b, which are two embodiments of the conventional light-emitting diode package structure 7, a substrate 71, a reflector cup 72, an illuminator 73, and a first embodiment are included. a package body 74, a phosphor layer 75, and a second package body 76. The reflector cup 72 is disposed on the surface of the substrate 71. The illuminator 73 is disposed on the surface of the substrate 71 in the center of the reflector cup 72. The first package body The light-emitting body 73 is covered in the reflector cup 72. The phosphor layer 75 covers the first package body 74. The second package body 76 encapsulates the phosphor layer 75 and has a hemispherical shape. When the light-emitting diode package structure 7 is used, the phosphor layer 75 is excited by the illuminator 73 to generate white light, and the reflector cup 72 reflects part of the white light and emits light toward the hemispherical second package body 76. To increase the light extraction efficiency. However, since the reflector cup 72 is in close proximity to the illuminator 73, glare is apt to occur, and the illuminator 73, the first package 74, and the phosphor layer 75 are encapsulated in the second package 76. The conventional light-emitting diode package structure 7 has a poor heat dissipation effect, and the phosphor layer 75 is susceptible to the light-emitting temperature of the light-emitting body 73.

For the above reasons, when the LED is applied to a lamp that produces a white light source, there are problems such as insufficient brightness, uneven color, glare, illuminating color change, and poor heat dissipation. Therefore, it is necessary to provide a high brightness. LED lamps with uniform light color, no obvious glare, stable color and good heat dissipation.

It is an object of the present invention to improve the above disadvantages to provide an LED lamp having a high luminance.

A second object of the present invention is to provide an LED luminaire with uniform light color.

Another object of the present invention is to provide an LED luminaire without significant glare.

Another object of the present invention is to provide an LED luminaire with stable illuminating color.

Another object of the present invention is to provide an LED lamp with better heat dissipation effect.

In order to achieve the foregoing object, the LED lamp of the present invention comprises: a light guiding member, an illuminating body and a light transmitting layer, wherein the light guiding member has a receiving hole, a concentrating portion, a total reflecting surface and a lead-out The receiving end of the light guiding member forms the accommodating hole, the inner end surface of the accommodating hole forms the concentrating portion, the peripheral surface of the light guiding member forms the total reflecting surface, and the lead surface connects the total reflecting surface; The illuminator has a substrate and an LED illuminating source, the substrate is provided with the LED illuminating source, and the substrate is disposed in the accommodating hole of the light guiding member, and the LED illuminating source faces the concentrating portion of the light guiding member; The light transmissive layer has a phosphor layer bonded to the light guide.

An LED lamp comprising: a light guiding member, an illuminating body and a light transmitting layer, wherein the light guiding member has a concentrating body and a reflecting cup, and one end of the concentrating body forms a receiving hole, and the accommodating hole is formed A light input portion is formed on the inner surface of the hole, and a light output portion is formed on the back surface of the light input portion. The bottom end of the reflector cup forms a joint portion, and the top end of the reflector cup forms an opening, wherein the joint portion of the reflector cup The illuminator has a substrate and an LED illuminating source, the substrate is configured to provide the LED illuminating source, and the substrate is disposed on the light guiding member, so that the LED illuminating source is located in the concentrating body The light-emitting source of the LED is disposed in the hole, and the light-emitting source of the LED faces the light input portion of the light-concentrating body; the light-transmitting layer has a fluorescent layer, and the light-transmitting layer covers the reflective cup.

Wherein at least one of the light input portion and the light output portion forms a plurality of light collecting microstructures.

Wherein, the light input portion forms a plane or a convex surface.

Wherein, the light output portion forms a plane or a convex surface.

The substrate is assembled in a receiving hole of the concentrating body.

Wherein, the substrate is assembled at a joint portion of the reflective cup.

The substrate is assembled in a receiving hole of the concentrating body and a joint portion of the reflecting cup.

The above and other objects, features and advantages of the present invention will become more <RTIgt; The first embodiment of the LED lamp of the present invention comprises a light guide member 1, an illuminant 2 and a light transmissive layer 3. The illuminant 2 and the light transmissive layer 3 are respectively coupled to the The opposite ends of the light guiding member 1 , whereby the light guiding member 1 can guide the light of the illuminating body 2 to illuminate the light transmitting layer 3 to emit light.

The light guide member 1 is made of a light transmissive material, such as polymethyl methacrylate, polycarbonate or silicone rubber, and the light guide member 1 has an inverted cone shape with an upper width and a lower width (in terms of a drawing) The light guide 1 has a receiving hole 11, a concentrating portion 12, a total reflecting surface 13, and a lead-out surface 14. The inner peripheral surface of the accommodating hole 11 and the inner end surface of the accommodating hole 11 form an accommodating space for accommodating the illuminant 2 . The inner end surface of the accommodating hole 11 forms the concentrating portion 12 (in terms of the drawing) for collecting the light of the illuminator 2, wherein the concentrating portion 12 can be provided with a plurality of concentrating microstructures 12a. In an embodiment (as shown in FIG. 4), the concentrating microstructure 12a is preferably formed in a plurality of zigzag structures; or the concentrating portion 12 is formed as a convex surface 12b as an embodiment (as shown in FIG. 5). The convex surface 12b preferably forms an aspherical surface, but is not limited to the above two embodiments. The total surface of the light guide member 1 forms the total reflection surface 13 , and the total reflection surface 13 surrounds the receiving hole 11 , so that the light of the illuminator 2 is totally reflected at the interface between the total reflection surface 13 and the air. . The light-emitting member 1 has a widened end forming the lead-out surface 14 , and the lead-out surface 14 is connected to the total-reflecting surface 13 for guiding the light collected by the concentrating portion 12 and the light reflected by the total-reflecting surface 13 .

The illuminator 2 has a substrate 21 and an LED illuminating source 22, and the substrate 21 is provided with the LED illuminating source 22, and the substrate 21 is disposed in the accommodating hole 11 of the light guiding member 1. The light system is composed of a material and a structure that facilitates heat dissipation of the LED light source 22, for example, a substrate having a heat dissipation hole or a substrate having a heat conduction function for discharging heat generated by the LED light source 22. The substrate 21 can also be provided with a driving circuit for electrically connecting an external power source (not shown) for driving the LED light source 22 to emit light. The LED light source 22 can be disposed on the surface of the substrate 21 or embedded in the substrate 21 such that the LED light source 22 is located in the receiving hole 11 , and the LED light source 22 faces the light collecting portion of the light guide 1 . 12, the number of the LED illumination source 22 can also be set as needed, and the LED illumination source 22 is selected from an LED chip or an LED package, etc., for exciting the phosphor powder to change the color of the light, for example, for exciting the firefly. Light blue and white light blue LED, ultraviolet LED or white LED, but not limited to this. In this embodiment, the LED illumination source 22 is illustrated with one blue LED chip as an implementation.

The light transmissive layer 3 is coupled to the lead-out surface 14 of the light guide member 1, and the light transmissive layer 3 has a phosphor layer 31. The material of the phosphor layer 31 is a phosphor powder that is excited by the light source to change the color of the light. The phosphor layer 31 is optionally disposed inside or on the surface of the light transmissive layer 3 for being excited by the LED light source 22 to change the color of the light. In this embodiment, the phosphor layer 31 is a yellow phosphor powder, and the phosphor layer 31 is disposed on the surface of the light transmissive layer 3 facing the lead-out surface 14 to avoid the manufacturing temperature of the light transmissive layer 3. The layer 31 is modified; the light transmissive layer 3 is further provided with a diffusing surface 32 facing away from the lead-out surface 14, and the diffusing surface 32 has a structure or material for causing a light to diffuse effect, The light scatters the light transmissive layer 3 uniformly, which is well known to those skilled in the art and will not be described herein. Thereby, the light guided by the light guiding member 1 can excite the fluorescent layer 31 to generate white light, and the diffusing surface 32 transmits the white light with uniform light color.

Generally speaking, the LED illumination source 22 is optically designed when it is packaged, so as to increase the light extraction efficiency, and the secondary optical design is performed by the LED lamp to reduce the convergence angle, and the advantages and disadvantages of the secondary optical design. Based on the result of the primary optical design, with the above structure of the present invention, the primary optical design and the secondary optical design can be fused, and the influence of the light-emitting temperature of the LED light-emitting source 22 can be reduced.

In summary, as shown in FIGS. 4 and 5, in the first embodiment of the present invention, part of the light generated by the LED illumination source 22 can be collected by the concentrating portion 12 of the light guiding member 1. Gathering and guiding the light transmissive layer 3, while the remaining light of the LED illumination source 22 is totally reflected by the total reflection surface 13 of the light guide member 1 and directed to the light transmissive layer 3 to improve the illumination of the LED lamp of the present invention. brightness. Moreover, when the light of the LED light source 22 passes through the light transmissive layer 3, the phosphor layer 31 is excited to generate white light with uniform light color, and the white light passes through the diffusing surface 32 to further improve the uniformity of the light color. The LED lamp of the invention produces white light with uniform light color to reduce the influence of glare effect.

In addition, the thermal energy generated by the LED illumination source 22 is transmitted by the air in the receiving hole 11 of the light guiding member 1 and is led out from the substrate 21 of the luminous body 2 to prevent heat from accumulating in the light guiding member. In addition, the heat dissipation effect of the LED lamp of the present invention can be improved, and the materials of the light guide member 1 and the light transmissive layer 3 are not easily deteriorated by the heat accumulation. Therefore, the LED lamp of the present invention can maintain the brightness of the LED lamp. Stable and provides better heat dissipation. Furthermore, since the phosphor layer 31 and the LED light source 22 are separated by a plurality of heat dissipating media (ie, the air in the receiving hole 1 and the light guiding member 1), the phosphor layer 31 is illuminated away from the LED. The heat dissipation effect of the multi-layer heat dissipating medium is better than that of the phosphor layer 31 and the LED light source 22 in a single material, so that the phosphor layer 31 is less susceptible to deterioration by the illumination temperature of the LED illumination source 22, and therefore, The LED lamp of the invention can be kept stable in addition to the color of the light, and can provide a better heat dissipation effect.

Referring to FIG. 6 , a second embodiment of the LED lamp of the present invention includes a light guide 4 , an illuminator 5 and a light transmissive layer 6 . The illuminant 5 and the light transmissive layer 6 respectively The two ends of the light guide 4 are coupled to each other. Thereby, the light guide 4 can guide the light of the illuminant 5 to illuminate the light transmissive layer 6 to emit light.

The light guiding member 4 has a concentrating body 41 and a reflecting cup 42. The concentrating body 41 is made of a light transmissive material, such as polymethyl methacrylate, polycarbonate or silicone rubber. The body 41 forms a hollow cover, and one end of the concentrating body 41 forms a receiving hole 411. The inner peripheral surface of the accommodating hole 411 and the inner end surface of the accommodating hole 411 form an accommodating space for The light-emitting portion 412 is formed on the inner surface of the accommodating hole 411. The light input portion 412 is formed on the back surface of the illuminating portion 412. The light input portion 412 is used to collect the light of the illuminator 5. And directing the light to the light output portion 413, and collecting and emitting the light concentrating body 41. The light input portion 412 and the light output portion 413 can respectively form a plane, a convex surface or a plurality of light collecting microstructures. Preferably, at least one of the light input portion 412 and the light output portion 413 form a plurality of poly The light micro-structure, but not limited thereto, preferably forms an aspherical surface, and the condensed microstructure preferably forms a zigzag structure. In this embodiment, the light input portion 412 forms a convex surface, and the light output portion 413 forms a plurality of light collecting microstructures as an embodiment (as shown in FIG. 6); or, the light input portion 412 A plurality of concentrating microstructures are formed, and the light output portion 413 is formed into a plane as another embodiment (as shown in Fig. 7). Other arrangements and combinations of the light input portion 412 and the light output portion 413 can be understood by those skilled in the art. The bottom end of the reflector cup 42 is formed with a joint portion 421, and the top end of the reflector cup 42 is formed with an opening 422. The joint portion 421 is coupled to the outer peripheral surface of the concentrating body 41 or the receiving hole 411 to condense the light. The light output portion 413 of the body 41 faces the opening 422. The joint portion 421 preferably forms an assembly hole or a mesh body, so that heat generated by the light emitting body 5 can be discharged by the joint portion 421; and the opening 422 is The light of the illuminator 5 can be projected from the inside of the reflector cup 42. The inner wall surface of the reflector cup 42 reflects the light of the illuminator 5, and the light is directed toward the opening 422. In this embodiment, the joint portion 421 forms an assembly hole as an embodiment, and the inner wall surface of the reflective cup 42 is coated with a light-reflecting material.

The illuminator 5 has a substrate 51 and an LED illuminating source 52. The substrate 51 and the LED illuminating source 52 are substantially the same as the substrate 21 and the LED illuminating source 22 of the first embodiment, and are not described herein. The substrate 51 is provided with the LED light source 52, and the substrate 51 is disposed on the light guide 4, and the substrate 51 can be optionally disposed in the receiving hole 411 of the concentrating body 41 or/and The LED illuminating source 52 is disposed in the accommodating hole 411, and the LED illuminating source 52 faces the light input portion 412 of the concentrating body 41. In this embodiment, the substrate 51 is disposed. The accommodating hole 411 of the concentrating body 41 and the joint portion 421 of the reflecting cup 42 are disposed to prevent the substrate 51 from being loosened in the horizontal direction or the vertical direction. The light transmissive layer 6 is provided with a phosphor layer 61 and a diffusing surface 62. The phosphor layer 61 and the diffusing surface 62 are substantially the same as the phosphor layer 31 and the diffusing surface 32 of the first embodiment. This content is not described here. The light transmissive layer 6 covers the opening 422 of the reflective cup 42 , and the diffusing surface 62 of the transparent layer 6 faces away from the opening 422 of the reflective cup 42 .

As shown in FIG. 6, when the LED lamp of the present invention is in use, part of the light generated by the LED light source 52 can be passed through the light input portion 412 and/or the light output of the light collector 41. The portion 413 is refracted, and light is concentrated toward the light transmissive layer 6. At the same time, the remaining light of the LED illumination source 52 passes through the concentrating body 41 and is reflected by the inner wall surface of the reflective cup 42 toward the transparent layer 6 to improve the illuminating brightness of the LED luminaire of the present invention. Moreover, when the light of the LED light source 52 passes through the light transmissive layer 6, the LED lamp of the present invention can generate white light with uniform light color by the action of the phosphor layer 61 and the diffusing surface 62, thereby reducing The effect of the glare effect.

In addition, the heat generated by the LED light source 52 is radiated by the air in the receiving hole 411 of the concentrating body 41, and is led out from the substrate 51 of the illuminant 5 to prevent heat from accumulating in the concentrating body. 41, in addition to improving the heat dissipation effect of the LED lamp of the present invention, the material of the concentrating body 41, the reflective cup 42 and the light transmissive layer 6 is not easily deteriorated by the influence of heat accumulation, and therefore, the LED lamp of the invention The brightness of the light can also be kept stable, and can also provide better heat dissipation. Furthermore, a plurality of heat insulating media are disposed between the phosphor layer 61 and the LED light source 52 (ie, the air in the receiving hole 411, the light collecting body 41, the light collecting body 41, and the light transmitting layer). The air between the 6 is separated from the LED light source 52, and the heat dissipation effect of the multilayer heat dissipation medium is also better than that of the fluorescent layer 61 and the LED light source 52. The light layer 61 is not easily deteriorated by the light-emitting temperature of the LED light source 52. Therefore, the light-emitting color of the LED lamp of the present invention can also be kept stable, and the same heat dissipation effect can be provided.

In the LED lamp of the present invention, the light concentrating portion 12 of the light guiding member 1 collects the light of the illuminating body 2 toward the light transmitting layer 3, and the total reflection surface 13 of the light guiding member 1 totally reflects the light to the through-light. The light layer 3 is added to increase the amount of light emitted by the light-transmitting layer 3; or the light collected by the light-collecting body 41 of the light-guiding member 4 is directed toward the light-transmitting layer 6 and is guided by the light-guiding member 4 The reflective cup 42 reflects light to the light transmissive layer 6 to increase the amount of light emitted by the light transmissive layer 6. Therefore, the LED lamp of the invention can achieve the effect of high luminous brightness.

In the LED lamp of the present invention, the light of the illuminant 2 passes through the phosphor layer 31 to generate white light of uniform light color; or the light of the illuminant 5 passes through the phosphor layer 61 to generate white light of uniform light color. Therefore, the LED lamp of the invention can achieve the effect of uniform light color.

In the LED lamp of the present invention, the light of the illuminant 2 passes through the phosphor layer 31 to generate white light of uniform light color; or the light of the illuminant 5 passes through the phosphor layer 61 to generate white light of uniform light color. Therefore, the LED lamp of the invention can achieve the effect of no obvious glare.

The LED lamp of the present invention is separated from the phosphor layer 31 and the illuminant 2 by a plurality of different media. Since the phosphor layer 31 is away from the LED illuminating source 22, the luminescent layer 31 is less susceptible to temperature deterioration. Or, a plurality of different media are isolated between the phosphor layer 61 and the illuminator 5. Since the phosphor layer 61 is away from the LED illuminating source 52, the phosphor layer 61 is less susceptible to deterioration due to temperature. Therefore, the LED lamp of the invention can achieve the effect of stabilizing the illuminating color.

The LED lamp of the present invention derives the heat of the LED light source 22 from the air in the receiving hole 11 of the light guiding member 1 and the substrate 21 to prevent heat from accumulating inside the light guiding member 1 and is composed of multiple layers of different media. Between the phosphor layer 31 and the LED light source 22, the heat dissipation effect of the multi-layer heat dissipating medium is better than encapsulating the phosphor layer 31 and the LED light source 22 with a single material; or, by the concentrating body 41 The air in the receiving hole 411 and the substrate 51 derive the heat of the LED light source 52 to prevent heat from accumulating inside the concentrating body 41, and the fluorescent layer 61 and the LED illuminating source are separated by a plurality of different mediums. Between 52, the heat dissipation effect of the multi-layer heat dissipating medium is also better than that of the phosphor layer 61 and the LED light source 52. Therefore, the LED lamp of the present invention can achieve the effect of better heat dissipation.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

[this invention]

1. . . Light guide

11. . . Socket hole

12. . . Concentration department

12a. . . Concentrating microstructure

12b. . . Convex

13. . . Total reflection surface

14. . . Export face

2. . . illuminator

twenty one. . . Substrate

twenty two. . . LED light source

3. . . Light transmission layer

31. . . Fluorescent layer

32. . . Diffuse surface

4. . . Light guide

41. . . Concentrator

411. . . Socket hole

412. . . Light input

413. . . Light output

42. . . Reflective cup

421. . . combination

422. . . Opening

5. . . illuminator

51. . . Substrate

52. . . LED light source

6. . . Light transmission layer

61. . . Fluorescent layer

62. . . Diffuse surface

[知知]

9. . . Conventional light emitting diode package structure

91. . . Substrate

92. . . illuminator

93. . . Fluorescent layer

94. . . Package

8. . . Conventional light emitting diode package structure

81. . . Substrate

82. . . illuminator

83. . . First package

84. . . Fluorescent layer

85. . . Second package

7. . . Conventional light emitting diode package structure

71. . . Substrate

72. . . Reflective cup

73. . . illuminator

74. . . First package

75. . . Fluorescent layer

76. . . Second package

Figure 1: Side view of a combination of the first conventional light emitting diode package structure.

Fig. 2a is a combined side view of a second embodiment of the conventional light emitting diode package structure (1).

Figure 2b is a combined side view of a second embodiment of the conventional light emitting diode package structure (ii).

Fig. 3a is a combined side view of a third embodiment of the conventional light emitting diode package structure (1).

Fig. 3b is a combined side view of a third embodiment of the conventional light emitting diode package structure (ii).

Fig. 4 is a side view showing the combination of the first embodiment of the LED lamp of the present invention.

Fig. 5 is a side view showing the combination of the embodiment (2) of the first embodiment of the LED lamp of the present invention.

Fig. 6 is a side view showing the combination of the embodiment (1) of the second embodiment of the LED lamp of the present invention.

Figure 7 is a side view showing the combination of the second embodiment of the LED lamp of the present invention.

1. . . Light guide

11. . . Socket hole

12. . . Concentration department

12a. . . Concentrating microstructure

13. . . Total reflection surface

14. . . Export face

2. . . illuminator

twenty one. . . Substrate

twenty two. . . LED light source

3. . . Light transmission layer

31. . . Fluorescent layer

32. . . Diffuse surface

Claims (17)

An LED lamp comprising: a light guiding member having a receiving hole, a collecting portion, a total reflecting surface and a lead-out surface, wherein one end of the light guiding member forms the receiving hole, and the receiving hole is The inner end surface forms the concentrating portion, the peripheral surface of the light guiding member forms the total reflection surface, and the deriving surface is connected to the total reflection surface; an illuminating body has a substrate and an LED illuminating source, and the substrate is configured to An LED light source, wherein the substrate is disposed in a receiving hole of the light guiding member, the LED light source is directed toward the light collecting portion of the light guiding member; and a light transmitting layer has a fluorescent layer, the light transmitting layer Combined with the above light guide. The LED lamp of claim 1, wherein the concentrating portion is provided with a plurality of concentrating microstructures. The LED lamp of claim 1, wherein the concentrating portion forms a convex surface. The LED lamp of claim 1, wherein the light transmissive layer is coupled to the lead-out surface of the light guide member, and the light transmissive layer is further provided with a diffusing surface facing away from the lead-out surface. The LED lamp of claim 1, wherein the light guide has polymethyl methacrylate, polycarbonate or silicone. An LED lamp comprising: a light guiding member having a concentrating body and a reflecting cup, wherein one end of the concentrating body forms a receiving hole, and an inner end surface of the accommodating hole forms a light input portion, the light a light output portion is formed on the back surface of the input portion, and a bottom portion of the reflective cup forms a joint, and a top portion of the reflector cup forms an opening, wherein a joint portion of the reflector cup is coupled to the light collector; a substrate and an LED illumination source, wherein the substrate is provided with the LED illumination source, and the substrate is disposed on the light guide member, wherein the LED illumination source is located in the receiving hole of the concentrating body, and the LED illumination source a light input portion facing the concentrating body; and a light transmissive layer having a phosphor layer covering the reflective cup. The LED lamp of claim 6, wherein at least one of the light input portion and the light output portion forms a plurality of light collecting microstructures. The LED lamp of claim 6, wherein the light input portion forms a plane or a convex surface. The LED lamp of claim 6, wherein the light output portion forms a plane or a convex surface. The LED lamp of claim 6, wherein the substrate is disposed in a receiving hole of the concentrating body. The LED lamp of claim 6, wherein the substrate is assembled at a joint of the reflector cup. The LED lamp of claim 6, wherein the substrate is disposed at a joint of the accommodating hole of the concentrating body and the reflecting cup. The LED lamp of claim 6, wherein the inner wall surface of the reflector cup is coated with a reflective material. The LED lamp of claim 6, wherein the light transmissive layer covers the opening of the reflective cup, and the light transmissive layer is further provided with a diffusing surface facing away from the opening. The LED lamp of claim 6, wherein the concentrator has polymethyl methacrylate, polycarbonate or silicone. The LED lamp of claim 1 or 6, wherein the LED light source is an LED chip or an LED package. The LED lamp of claim 1 or 6, wherein the phosphor layer is made of a phosphor powder that is excited by a light source to change the color of the light.