CN212456472U

CN212456472U - LED annular light source

Info

Publication number: CN212456472U
Application number: CN202021549994.XU
Authority: CN
Inventors: 张权; 吕明高
Original assignee: Shanghai Anji Software Technology Co ltd
Current assignee: Shanghai Anji Software Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-02
Anticipated expiration: 2030-07-30

Abstract

The utility model relates to a LED annular light source in the technical field of illumination, which comprises a first shell, a second shell and LED lamp beads; the first shell comprises a cylinder body and an annular plate, the annular plate is connected to one end of the cylinder body, the second shell is a light-transmitting plate, and two ends of the second shell are respectively connected with two ends of the first shell to form a cylinder body structure with a closed inner cavity and two open ends; a plurality of groups of LED lamp beads are arranged on the inner side surface of the annular plate, and each group of LED lamp beads independently supplies power; the second shell comprises a cylindrical section and a conical section, the annular plate is connected with the cylindrical section, and the cylinder body is connected with the conical section; the conical section comprises a first conical section and a second conical section, and the first conical section inclines towards the center of the circle of the cylinder body to form an included angle with the second conical section. The utility model provides a LED annular light source can form a plurality of independent control's light emitting area on the annular light source face through the LED lamp pearl that sets up the independent power supply of multiunit, satisfies the different detection demands of the different detection site luminous intensity of waiting to examine the part, improves the illumination effect.

Description

LED annular light source

Technical Field

The utility model relates to the field of lighting technology, specifically, relate to a LED annular light source.

Background

In the field of lighting, the application of LED light Emitting products is attracting the eye of people, and LED (light Emitting diode) is an acronym of light Emitting diode, and is a solid semiconductor device, which can directly convert electric energy into light, so that LED has many advantages of high lighting efficiency, long service life, energy saving, environmental protection, etc., and is more and more widely applied to many fields, such as indoor lighting, outdoor lighting, backlight, medical treatment, traffic and special lighting, etc.

The automatic optical inspection is a new testing technique, which uses machine vision as a standard inspection technique to obtain the surface state of the finished product by an optical method and detect defects such as foreign matters or abnormal patterns by image processing. Since there is no contact inspection, the semi-finished product can be inspected in an intermediate process. In the prior art, practical illumination equipment is controlled by a single power supply, and the requirements of different illumination intensities possibly required by different parts of a semi-finished product to be imaged cannot be well met. In addition, the illumination direction is mostly direct illumination type, and the effect of the light source is not good.

The search of the prior art shows that Chinese patent publication No. CN201892054U discloses an annular LED light source, which comprises an LED chip, a module circuit layer and a metal substrate, an outer side packaging frame and an inner side packaging frame are arranged on the metal substrate, and a packaging area is formed between the outer side packaging frame and the inner side packaging frame, the heat dissipation holes are arranged in the inner side packaging frame area, the module circuit layer is fixed on the surface of the metal substrate through a high heat conduction adhesive layer for the module circuit layer, the LED chips are uniformly distributed in a packaging area formed between the outer side packaging frame and the inner side packaging frame, the module circuit layer in the packaging area formed between the outer packaging frame and the inner packaging frame is exposed with a die bonding position and a welding wire position, the LED chips are bonded on the exposed die bonding position of the module circuit layer through the high heat conduction bonding glue of the chips, and each LED chip is electrically connected with the module circuit layer through a lead, and a light-transmitting colloid is filled in a packaging area formed between the outer packaging frame and the inner packaging frame. The patented technology suffers from the problems associated with it as described above.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a LED annular light source.

According to the utility model provides a LED annular light source, which comprises a first shell, a second shell and LED lamp beads;

the first shell comprises a cylinder body and an annular plate, the annular plate is connected to one end of the cylinder body, the second shell is a light-transmitting plate, and two ends of the second shell are respectively connected with two ends of the first shell to form a cylinder structure with a closed inner cavity and two open ends;

a plurality of groups of LED lamp beads are arranged on the inner side surface of the annular plate, and each group of LED lamp beads independently supplies power;

the second shell comprises a cylindrical section and a conical section, the annular plate is connected with the cylindrical section, and the cylinder body is connected with the conical section; the conical section comprises a first conical section and a second conical section, and the first conical section inclines towards the direction of the circle center of the barrel body to form an included angle with the second conical section.

In some embodiments, the cylindrical section and the conical section form an angle of 105 ° to 135 °.

In some embodiments, the plurality of groups of LED beads are distributed continuously along the circumferential surface of the annular plate in an equal or unequal manner.

In some embodiments, the LED lamp beads arranged on the inner side surface of the annular plate are 3-8 groups.

In some embodiments, the LED lamp beads are distributed symmetrically in 6 groups, including 2 groups of 15 ° regions and 4 groups of 82.5 ° regions.

In some embodiments, the cylinder and the annular plate are made of alloy material, and the first housing is formed by integral molding.

In some embodiments, the second housing is a diffusive reflective plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model provides a LED annular light source can form a plurality of independent control's light emitting area on the annular light source face through the LED lamp pearl that sets up the independent power supply of multiunit, satisfies the different detection demands of the different detection site luminous intensity of waiting to examine the part, improves the illumination effect.

2. The utility model discloses a two sections designs of toper section for second toper section can form the technological effect that has the backlight, and light through the multi-angle shines, further improves the illumination effect to spare part.

3. The utility model discloses can further improve the quantity of independent control's light emitting area in the lighting device with the mode that LDE lamp pearl set up through inhomogeneous in succession, improve the illumination effect to the tiny position of spare part.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a sectional view of the overall structure of the LED annular light source of the present invention;

FIG. 2 is an external view of the overall structure of the LED annular light source of the present invention;

fig. 3 is a schematic view of a four-divided structure of an LED lamp bead according to some embodiments of the present invention;

fig. 4 is the utility model discloses six subregion structure schematics of LED lamp pearl among some embodiments.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model provides a LED annular light source, including first casing 1, second casing 2 and LED lamp pearl 3. The first housing 1 includes a cylinder 11 and an annular plate 12, and the annular plate 12 is attached to one end of the cylinder 11. Preferably, the cylinder 11 and the annular plate 12 are integrally formed to form the first casing 1 with one end open and one end semi-open. Here, the structure that one end of the first casing 1 is half open is that after the annular plate 12 is connected with the cylinder 11, the gap in the middle of the annular plate 12 is the half open end of the first casing 1.

The second casing 2 is a light-transmitting plate, and the second casing 2 is integrally formed. The second casing 2 is also a cylindrical structure, and two ends of the second casing 2 are respectively connected with two ends of the first casing 1 to form a hollow cylindrical structure with a closed inner cavity and two open ends, wherein the closed inner cavity is an annular cavity between the first casing 1 and the second casing 2. The first shell 1 and the second shell 2 can be connected by screw joint or by gluing. The second shell 2 can be the same as the first shell 1 in structure and is connected in an inverted manner to form a regular hollow cylinder structure with an inner cavity. The second shell 2 is also in a folded shape and forms a hollow cylinder with a similar trumpet shape after being connected with the first shell 1.

LED lamp beads 3 are arranged in a closed annular cavity formed by the first shell 1 and the second shell 2, and the LED lamp beads 3 are installed on the inner side surface of the annular plate 12. LED lamp pearl 3 on the annular plate 12 medial surface is the multiunit, and multiunit LED lamp pearl 3 sets up along annular plate 12 periphery in succession. Each group of LED lamp beads 3 is connected with a power plug 4, and the power plug 4 is used for being connected with an external power supply, so that each group of LED lamp beads 3 can independently supply power. The power plug 4 can enter a closed inner cavity formed after the first shell 1 and the second shell 2 are connected through a through hole formed in the barrel 11 and is electrically connected with the LED lamp bead 3.

Among them, the first housing 1 is preferably made of an alloy material, and particularly preferably made of an aluminum alloy material, to improve the light reflection effect. The second housing 2 is preferably a diffuse reflection plate, and the diffuse reflection plate improves the light emitting efficiency and ensures good illumination uniformity.

The utility model provides a LED annular light source can form a plurality of independent control's light emitting area on the annular light source face through the LED lamp pearl 3 that sets up the independent power supply of multiunit, satisfies the different detection demands of the different detection site luminous intensity of waiting to examine the part, improves illumination effect.

The second casing 2 comprises a cylindrical section 21 and a conical section 22, and the cylindrical section 21 and the conical section 22 preferably form the second casing 2 with a funnel-shaped structure by means of integral molding. The free end of the cylindrical section 21 is connected to the rim of the annular plate 12 and the free end of the conical section 22 is connected to the rim of the barrel 11. The second shell 2 is connected to the first shell 1 in a sealing mode, and then an inner opening with a horn-shaped end is formed, so that the irradiation area can be effectively enlarged, and the irradiation effect is improved. Preferably, the angle at the junction of the cylindrical section 21 and the conical section 22 is 45 ° to 75 °, particularly preferably 60 °.

Further, the tapered section 22 of the second housing 2 is composed of two sections including a first tapered section 221 and a second tapered section 222, and the second tapered section 222, the first tapered section 221 and the cylindrical section 21 are connected in sequence. The edge of the first conical section 221 connected with the cylinder 11 has an inclined trend towards the center of the first shell 1, and forms a connection relationship with the first conical section 221 with an included angle, as shown in fig. 1-2. The first tapered section 221 forms an obtuse angle with the second tapered section 222. Through the two-section design of the conical section 22, the second conical section 222 can form a technical effect similar to a backlight source, and the illumination effect on parts is further improved through multi-angle light irradiation.

Optionally, the multiple groups of LED beads 3 disposed on the inner side surface of the annular plate 12 are uniformly and continuously disposed, that is, each group of LED beads 3 is a sector area with the same angle on the circumferential surface of the annular plate 12. Preferably, the number of groups of LED lamp beads 3 arranged on the annular plate 12 is preferably 3-8 groups. For example, when 4 groups of LED beads 3 are disposed on the inner side of the annular plate 12, each group of LED beads 3 is a 90 ° sector area on the inner side of the annular plate 12, as shown in fig. 3.

Optionally, the multiple groups of LED beads 3 disposed on the inner side surface of the annular plate 12 may be continuously disposed in a non-uniform manner, that is, at least one group of LED beads 3 in the multiple groups of LED beads 3 disposed on the circumferential surface of the annular plate 12 has a sector area size different from that of the other groups on the circumferential surface of the annular plate 12. The number of the groups of the LED lamp beads 3 arranged on the annular plate 12 is preferably 3-8. Further preferably, 6 groups of LED lamp beads 3 are arranged on the inner side surface of the annular plate 12, as shown in fig. 4, the 6 groups of LED lamp beads 3 are arranged in a manner that 2 groups are 15-degree sector regions, and 4 groups are 82.5-degree sector regions. 6 LED lamp pearl 3 of group are to symmetrical distribution. The non-uniform continuous arrangement mode can further improve the quantity of the luminous surfaces which are independently controlled in the lighting device and improve the illumination effect on the tiny parts.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. An LED annular light source is characterized by comprising a first shell (1), a second shell (2) and an LED lamp bead (3);

the first shell (1) comprises a cylinder body (11) and an annular plate (12), the annular plate (12) is connected to one end of the cylinder body (11), the second shell (2) is a light-transmitting plate, and two ends of the second shell (2) are respectively connected with two ends of the first shell (1) to form a two-end-opening cylinder structure with a closed inner cavity;

a plurality of groups of LED lamp beads (3) are arranged on the inner side surface of the annular plate (12), and each group of LED lamp beads (3) is independently powered;

the second shell (2) comprises a cylindrical section (21) and a conical section (22), the annular plate (12) is connected with the cylindrical section (21), and the cylinder (11) is connected with the conical section (22); the conical section (22) comprises a first conical section (221) and a second conical section (222), and the first conical section (221) inclines towards the circle center direction of the barrel (11) to form an included angle with the second conical section (222).

2. The LED ring light source of claim 1, wherein the angle between the cylindrical section (21) and the conical section (22) is 105 ° to 135 °.

3. The LED annular light source according to claim 1, characterized in that the groups of LED beads (3) are distributed continuously along the circumferential surface of the annular plate (12) in an equal or unequal manner.

4. The LED annular light source according to claim 3, characterized in that the LED beads (3) arranged on the inner side surface of the annular plate (12) are 3-8 groups.

5. The LED ring light source according to claim 4, characterized in that the LED beads (3) are in 6 groups, comprising 2 groups of 15 ° zones and 4 groups of 82.5 ° zones, symmetrically distributed.

6. The LED ring light source according to claim 1, characterized in that the barrel (11) and the ring plate (12) are of alloy material, the first housing (1) being formed by integral molding.

7. The LED ring light source according to claim 1, characterized in that the second housing (2) is a diffuse reflector.