JP3121109U - LED lamp collimating lens - Google Patents

Abstract

A collimating lens for an LED lamp is provided which has a good light concentration effect and an improved illumination effect.
A collimating lens 10 of an LED lamp is made of a translucent material and includes a first end surface 24, a second end surface 42, and a side wall. The first end surface 24 has an LED lamp installation hole for installing the LED lamp. The second end face 42 is positioned on the side facing the first end face 24 and has an area larger than that of the first end face 24. The side wall is connected to the first end surface 24 and the second end surface 42, and has a first wall step portion 32 and a second wall step portion 44, and the second wall step portion 44 extends from the predetermined position of the second end surface 42 to the first end. The first wall step 32 is extended to a predetermined distance in the direction of the end surface 24, one end of the first wall step 32 is connected to the second wall step 44, and the other end of the first wall step 32 is predetermined in the direction of the first end surface 24. Stretch to distance. The angle between the first wall step 32 and the second wall step 44 is 180 degrees or less.
[Selection] Figure 2

Description

  The present invention relates to an LED lamp, and more particularly to a collimating lens of an LED lamp.

As shown in FIG. 5, the structure of the known collimating lens 90 includes a top surface 92, a bottom surface 94, and a side wall 96. Among them, the bottom surface 94 has an installation hole 942 for installing the LED lamp 98. The side wall 96 has a first wall step 962 and a second wall step 964, of which the first wall step 962 extends obliquely upward from the bottom surface 94 and is connected to the bottom end of the second wall step 964. The top of the second wall step 964 is connected to be perpendicular to the top surface 92. The angle between the first and second wall step portions 962 and 964 is 180 degrees or more. As a result, the light beam emitted from the LED lamp 98 is repeatedly refracted between the top surface 92 and the side wall 96 of the collimating lens 90, and finally passes through the top surface 92 at an angle close to the top surface 92 so as to transmit light. Since it is possible to radiate, the direction of the light source is adjusted and concentrated to generate a directional light beam, thereby satisfying the illumination requirement.
However, when the light emitted from the LED lamp 98 is refracted from the top surface 92 to the second wall step 964, the angle between the second wall step 964 and the first wall step 962 is 180 degrees or more, and the top surface The light beam refracted from 92 to the second wall step 964 is emitted from the second wall step 964 because the incident angle at the second wall step 964 is too large, causing a loss of the light source and affecting the lighting effect. End up.

  The main object of the present invention is to provide a collimating lens for an LED lamp, in which the light concentration effect is improved and the illumination effect is improved.

  In order to achieve the above-described object, the collimating lens of the LED lamp according to the present invention is made of a translucent material and includes a first end surface, a second end surface and a side wall. The first end surface has an LED lamp installation hole for installing the LED lamp. The second end face is positioned on the side facing the first end face, and the area thereof is larger than the area of the first end face. The side wall is connected to the first end surface and the second end surface, and has a first wall step portion and a second wall step portion, and the second wall step portion is predetermined from a predetermined position of the second end surface toward the first end surface. The one end of the first wall step is connected to the second wall step, and the other end of the first wall step extends to a predetermined distance in the direction of the first end surface. The angle between the first wall step and the second wall step is 180 degrees or less. As a result, the collimating lens according to the present invention can concentrate the light rays of the LED lamp and allow the LED lamp to achieve the purpose of illumination.

Hereinafter, the structure and effects of the present invention will be described with reference to the drawings and embodiments. First, the description of the drawings is as follows.
FIG. 1 is a perspective view showing a collimating lens of an LED lamp according to a first embodiment of the present invention.
FIG. 2 is a side view showing a collimating lens of an LED lamp according to a first embodiment of the present invention.
FIG. 3 is a schematic view showing the state of light incidence and light refraction of the collimating lens of the LED lamp according to the first embodiment of the present invention.
FIG. 4 is a schematic view showing the state of light incidence and light refraction of the collimating lens of the LED lamp according to the second embodiment of the present invention.

As shown in FIGS. 1 to 3, the collimating lens 10 of the LED lamp according to the first embodiment of the present invention is made of a translucent material (for example, plastic or glass) and has a bottom 20, a body 30 and a top. 40 is included.
The bottom portion 20 has a short cylindrical shape, and the peripheral side wall thereof becomes the third wall step portion 22. The bottom portion 20 forms a first end surface 24 at the bottom end of the third wall step portion 22. The bottom portion 20 has a fourth wall step portion 26, and the fourth wall step portion 26 extends from the top end of the third wall step portion 22.

The body 30 extends so as to gradually increase outward from the bottom portion 20, and the peripheral side wall thereof becomes the first wall step portion 32. The first wall step 32 is an arc surface, and the first wall step 32 is connected to the fourth wall step 26.
The top 40 extends outwardly from the body 30 and forms a flat second end face 42 larger than the area of the first end face 24 at the end thereof. Moreover, the surrounding side wall of the top part 40 becomes the 2nd wall step part 44, and the 2nd wall step part 44 is an arc surface.

The third wall step portion 22 and the fourth wall step portion 26 of the bottom portion 20, the first wall step portion 32 of the body 30, and the second wall step portion 44 of the top portion 40 constitute the side wall 12 of the collimating lens 10. There is an angle ３２ between the wall step 32 and the second wall step 44, and the range of the angle 痾 is between 0 degrees and 180 degrees. In this embodiment, the angle 痾 is about 150 degrees.
The collimating lens 10 has a circular LED installation hole 14, and the LED installation hole 14 forms an opening 16 for housing the LED lamp 50 at the center position of the first end surface 24. Further, the collimating lens 10 forms a convex arc surface 18 on the inner top wall of the LED installation hole 14.

  As shown in FIG. 3, after the light beam L of the LED lamp 50 is incident on the collimating lens 10 via the above-described structure, the light beam L is first incident on the second end surface 42 because the incident angle at the first end surface 24 is too small. And is refracted to the second wall step 44. Since the angle 痾 between the second wall step 44 and the first wall step 32 is 180 degrees or less, the incident angle of the light beam L can be reduced, the light beam L can be refracted again, and folded back to the second end face 42. It is. As a result, the light beam L can be refracted repeatedly between the second end surface 42 and the second wall step 44, but finally passes through the second end surface 42 at an angle close to perpendicular to the second end surface 42. To emit light.

As described above, the collimating lens 10 of the LED lamp according to the present embodiment employs a design in which the angle の 間 between the first wall step portion 32 and the second wall step portion 44 is 180 degrees or less. It is possible to concentrate 50 rays L and achieve a lighting effect.
As shown in FIG. 4, the main structure of the LED lamp collimating lens 60 according to the second embodiment of the present invention is substantially the same as that of the first embodiment. The difference is as follows.

  In the present embodiment, the first wall step portion 62 gradually increases outward from both ends of the bottom portion 61 and extends along a straight line, and forms a flat surface. The second wall step portion 63 is the top end of the first wall step portion 62. The first wall step 62 and the second wall step 63 have an angle 竈, and the range of the angle 竈 is 0 degree. Between 180 degrees. As a result, the light beam L of the LED lamp 50 is repeatedly refracted between the second end face 64 and the second wall step 63, and finally passes through the second end face 64 when the angle is nearly perpendicular to the second end face 64. Therefore, the object of the present invention can be achieved.

1 is a perspective view illustrating a collimating lens of an LED lamp according to a first embodiment of the present invention. It is a side view which shows the collimating lens of the LED lamp by 1st Example of this invention. It is a schematic diagram which shows the state of light incidence and light refraction of the collimating lens of the LED lamp by 1st Example of this invention. It is a schematic diagram which shows the state of light incidence and light refraction of the collimating lens of the LED lamp by 2nd Example of this invention. It is a schematic diagram which shows the collimating lens of a well-known LED lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Collimating lens, 12 Side wall, 14 LED installation hole, 16 Opening part, 18 Convex arc surface, 20 Bottom part, 22 3rd wall step part, 24 1st end surface, 26 4th wall step part, 30 Body, 32 1st wall Step, 40 Top, 42 Second end surface, 44 Second wall step, 50 LED lamp, 60 Collimate lens, 61 Bottom, 62 First wall step, 63 Second wall step, 64 Second end surface, L ray , 痾 angle, 竈 angle

Claims (8)

A collimating lens of an LED lamp that can be made of a light-transmitting material,
A first end surface having an LED lamp installation hole;
A second end face positioned on the side facing the first end face, the area being larger than the area of the first end face;
The first end face and the second end face are connected to each other and have a first wall step and a second wall step, and the second wall step is from a predetermined position on the second end face to a predetermined distance in the direction of the first end face. One end of the first wall step is connected to the second wall step, and the other end of the first wall step extends to a predetermined distance in the direction of the first end surface. A side wall having an angle of 180 degrees or less with respect to the wall step,
A collimating lens for an LED lamp, comprising:   A bottom portion, a body extending so as to gradually increase outward from the bottom portion, and a top portion extending so as to gradually increase outward from the body, the bottom portion having a first end surface, and a peripheral side wall of the body being a first wall 2. The collimating lens for an LED lamp according to claim 1, wherein the collimating lens is a stepped portion, the top portion has a second end face, and the peripheral side wall of the top portion is a second wall stepped portion.   The bottom portion has a third wall step portion and a fourth wall step portion, the third wall step portion becomes a peripheral side wall of the bottom portion, the fourth wall step portion extends from the third wall step portion so as to exhibit a vertical shape, and The collimating lens for an LED lamp according to claim 2, wherein the collimating lens is connected to the first wall step.   The collimating lens for an LED lamp according to claim 1, wherein the second end surface is a flat surface.   The collimating lens for an LED lamp according to claim 1, wherein the first wall step portion is an arc surface.   The collimating lens for an LED lamp according to claim 1, wherein the second wall step portion is an arc surface.   The collimating lens for an LED lamp according to claim 1, wherein the first wall step is a flat surface. The collimating lens for an LED lamp according to claim 1, wherein the second wall step portion is a flat surface.

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