CN210197036U

CN210197036U - Annular shadowless light source

Info

Publication number: CN210197036U
Application number: CN201921521269.9U
Authority: CN
Inventors: Caiquan Jiang; 江才权; Shiping Huang; 黄时平
Original assignee: Dongguan Kemai Vision Technology Co Ltd
Current assignee: Dongguan Kemai Vision Technology Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-03-27
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses an annular shadowless light source, which comprises a shell; the shell is annular, the top of the shell is provided with an opening, and an annular circuit board is arranged in the shell; a plurality of LED lamp beads are arranged on the circuit board in an annular array; the LED lamp beads are electrically connected with the circuit board; a circle of convex ring is formed at the bottom of the inner ring of the shell, and a diffusion plate is arranged on the shell; the diffusion plate is a circular ring body with the diameter gradually reduced from top to bottom, the top end of the diffusion plate is fixedly connected with the top of the shell through screws, and the bottom of the diffusion plate is abutted against the top of the convex ring; the annular shadowless light source of the utility model has the advantages that the high-density LEDs are vertically distributed, and the brightness is high; the high-uniformity diffusion illumination can eliminate the interference caused by the uneven surface of a product and eliminate the glare and reflection generated by the LED, and has a shadowless effect; the light and compact structural design is convenient to install.

Description

Annular shadowless light source

Technical Field

The utility model relates to an annular shadowless light source.

Background

The light source is a physical term, some objects in the universe are luminous, some objects are non-luminous, and the objects which can emit light automatically and are luminous are called the light source; the sun, turned-on lights, burning candles, etc. are all light sources;

the following problems exist in the market at present: in the prior art, when detecting the surface boundary of an object with an arc or curved surface type, particularly a high-reflection material such as metal or mirror paint, and the like, such as a mobile phone, an existing light source, whether an annular light source or a square light source, cannot uniformly irradiate a round corner and a straight edge of the object at the same time, and after diffuse reflection light is reflected by the upper surface of the object, a uniformly-irradiated illumination environment is difficult to form, and even phenomena such as snowflake, overexposure and the like are generated; and when the digital camera collects images, light emitted by LED lamp beads without effectiveness when the object is irradiated by the light source can interfere with the uniformity of the photos, so that the photos cannot be analyzed by software due to over-bright or over-dark images when the images are analyzed by the software.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

An annular shadowless light source comprising a housing; the shell is annular, the top of the shell is provided with an opening, and an annular circuit board is arranged in the shell; a plurality of LED lamp beads are arranged on the circuit board in an annular array; the LED lamp beads are electrically connected with the circuit board; a circle of convex ring is formed at the bottom of the inner ring of the shell, and a diffusion plate is arranged on the shell; the diffusion plate is a circular ring body with the diameter gradually reduced from top to bottom, the top end of the diffusion plate is fixedly connected with the top of the shell through screws, and the bottom of the diffusion plate is abutted to the top of the convex ring.

Preferably, an annular heat-conducting plate is further arranged in the shell; the heat conducting plate is positioned at the bottom of the circuit board.

Preferably, the side surface of the housing is horizontally formed with a wire guide hole penetrating through the side wall of the housing.

Preferably, the outer wall of the shell is formed with a plurality of circles of anti-slip lines.

Preferably, the LED lamp beads are single-color lamp beads or multi-color lamp beads.

Preferably, the bottom of the housing is vertically formed with a plurality of fixing screw holes.

Compared with the prior art, the beneficial effects of the utility model are that: the annular shadowless light source of the utility model has the advantages that the high-density LEDs are vertically distributed, and the brightness is high; the high-uniformity diffusion illumination can eliminate the interference caused by the uneven surface of a product and eliminate the glare and reflection generated by the LED, and has a shadowless effect; the light and compact structural design is convenient to install.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a first explosion structure of the present invention.

Fig. 2 is a schematic diagram of a second explosion structure of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a schematic view of the structure of the fixing screw hole of the present invention.

Fig. 5 is a schematic view of the structure of the convex ring of the present invention.

In the figure: a housing 1; a circuit board 2; an LED lamp bead 3; a convex ring 4; a diffusion plate 5; a heat-conducting plate 6; a wire guide 7; anti-skid threads 8; and fixing the screw hole 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, in an embodiment of the present invention, an annular shadowless light source includes a housing 1; the shell 1 is annular, the top of the shell 1 is provided with an opening, and an annular circuit board 2 is arranged in the shell 1; a plurality of LED lamp beads 3 are arranged on the circuit board 2 in an annular array; the LED lamp beads 3 are electrically connected with the circuit board 2; a circle of convex ring 4 is formed at the bottom of the inner ring of the shell 1, and a diffusion plate 5 is arranged on the shell 1; the diffusion plate 5 is a circular ring body with the diameter gradually decreasing from top to bottom, the top end of the diffusion plate 5 is fixedly connected with the top of the shell 1 through screws, and the bottom of the diffusion plate 5 is abutted to the top of the convex ring 4.

Preferably, an annular heat conduction plate 6 is further arranged in the shell 1; the heat conducting plate 6 is located at the bottom of the circuit board 2 and used for conducting heat out.

Preferably, a wire guide 7 penetrating through a side wall of the housing 1 is horizontally formed at a side surface of the housing 1.

Preferably, the outer wall of the shell 1 is formed with a plurality of circles of anti-slip lines 8.

Preferably, the LED lamp beads 3 are single-color lamp beads or multi-color lamp beads.

Preferably, a plurality of fixing screw holes 9 are vertically formed at the bottom of the housing 1.

The utility model adopts a unique irradiation structure, the light emitted from the LED is uniformly diffused and irradiated, the circuit board is fixed at an irradiation angle of 90 degrees, and is irradiated on a measured object at a low angle after being refracted by the diffusion plate 5, and the target area is efficiently illuminated at a low angle so as to strengthen the surface characteristic; the annular shadowless LED lamp bead 3 has a unique structure array, and after the LED light passes through the diffusion plate 5, a uniform illumination area is formed under the center of the light source, and the illumination effect similar to that of a dome shadowless lamp is achieved, so that the LED lamp bead is one of the most widely applied light sources in the machine vision industry.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. An annular shadowless light source comprising a housing; the shell is annular, the top of the shell is provided with an opening, and an annular circuit board is arranged in the shell; a plurality of LED lamp beads are arranged on the circuit board in an annular array; the LED lamp beads are electrically connected with the circuit board; a circle of convex ring is formed at the bottom of the inner ring of the shell, and a diffusion plate is arranged on the shell; the diffusion plate is a circular ring body with the diameter gradually reduced from top to bottom, the top end of the diffusion plate is fixedly connected with the top of the shell through screws, and the bottom of the diffusion plate is abutted to the top of the convex ring.

2. The annular shadowless light source of claim 1 wherein an annular heat conducting plate is further disposed within the housing; the heat conducting plate is positioned at the bottom of the circuit board.

3. The annular shadowless light source of claim 1 wherein the side of the housing is horizontally formed with wire guides through the side wall of the housing.

4. The annular shadowless light source of claim 1 wherein the outer wall of the housing is formed with a plurality of rings of non-slip threads.

5. The annular shadowless light source of claim 1 wherein the LED lamp beads are single color beads or multi-color beads.

6. The ring-shaped shadowless light source of claim 1, wherein a plurality of fixing screw holes are vertically formed at the bottom of the housing.