Illumination accessory and code reading device
By designing lighting accessories with light guide channels and reflective structures, the problem of uneven light in smart code readers in complex backgrounds is solved, and the uniform illumination of light and the imaging effect is improved.
Patent Information
- Application Number
- CN202510188235.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-06-20
AI Technical Summary
The direct light source of the intelligent code reader is difficult to cover complex application scenarios such as curved surfaces, uneven or mirrored backgrounds, resulting in uneven light and affecting the imaging effect.
A lighting accessories are designed to form a light guide channel through the outer shell part and the inner cavity part, and the light rays are evenly illuminated to the target object by multiple reflections, and the optical path is further optimized through the reflection of the lower shell part.
The uniform illumination of light is achieved, the optical path is optimized, the uniformity and efficiency of imaging are improved, and the cost is reduced without adding an external light source.
Smart Images
Figure CN120176058A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of lighting for code reading, and particularly to lighting accessories and code reading devices. Background Art
[0002] Intelligent code readers are a category developed from industrial cameras in recent years. They integrate functions such as data processing, barcode recognition, communication, and data transmission, and have advantages such as high reliability, complete functions, and the ability to quickly collect data. They are widely used in fields such as medical testing equipment, photovoltaic modules, and automotive spare parts.
[0003] During the operation of an intelligent code reader, the light source is an important functional part for it to complete its work. It needs to consider the imaging purpose, object characteristics, and environmental conditions. The color, convergence angle, power brightness, etc. of the light source all play a role. However, the direct light source of an intelligent code reader cannot cover all application scenarios. For example, code reading backgrounds with curved shapes, uneven smooth surfaces, metal or mirror-like code reading backgrounds, etc. Summary of the Invention
[0004] Based on this, in view of the above technical problems, it is necessary to provide a lighting accessory that can evenly irradiate light onto a target object.
[0005] In a first aspect, this application provides a lighting accessory, including an outer housing member, an inner cavity member, and a lower housing member;
[0006] The outer housing member has a third end and a fourth end. The inner surface of the outer housing member and the outer surface of the inner cavity member form a light guiding channel to reflect the light emitted by an external light source multiple times;
[0007] The inner cavity member has a first end and a second end. An incident light port communicating with the light guiding channel is formed between the first end of the inner cavity member and the third end of the outer housing member, and an exit light port communicating with the light guiding channel is formed between the second end of the inner cavity member and the fourth end of the outer housing member; the inner side of the outer housing member is the side close to the inner cavity member; the outer side of the inner cavity member is the side close to the outer housing member;
[0008] The lower housing member has a fifth end and a sixth end. The fifth end of the lower housing member is close to the fourth end of the outer housing member, and the sixth end of the lower housing member forms the exit light port of the lighting accessory. The lower housing member is used to reflect the light emitted from the exit light port of the light guiding channel to the inner surface of the inner cavity member, so that the inner surface of the inner cavity member reflects the light through the exit light port of the lighting accessory to the target object.
[0009] In one embodiment, the radial dimension of the outer surface and / or the inner surface of the inner cavity member gradually increases in the direction from the first end to the second end.
[0010] In one embodiment, the inner cavity member includes an inner cavity main body and a light collecting portion connected to an end of the inner cavity main body. The light collecting portion is located at a first end of the inner cavity member. An outer surface of the light collecting portion is inclined toward an inner side of the outer housing member relative to an outer surface of the inner cavity main body, and the outer surface of the light collecting portion is an arc surface.
[0011] In one embodiment, the inner cavity member further has fixing struts provided on an outer side of the inner cavity main body; the fixing struts are used to fixedly connect the inner cavity main body to the outer housing member through a first fixing member.
[0012] In one embodiment, a card slot is provided on an inner side of the outer housing member; a position of the card slot corresponds to a position of the fixing strut, so that the fixing strut is embedded in the card slot, and the inner cavity main body is fixedly connected to the outer housing member through the first fixing member.
[0013] In one embodiment, a radial dimension of an outer surface and / or an inner surface of the outer housing member gradually increases in a direction from a third end to a fourth end; the outer side of the outer housing member faces away from the inner side of the outer housing member.
[0014] In one embodiment, an upper end surface is provided at a third end of the outer housing member. The upper end surface extends in a direction radially pointing to the inner cavity member, and a light inlet for communicating the light guide channel is formed between an end point of the extension and a first end of the inner cavity member;
[0015] Wherein, the light inlet of the light guide channel corresponds to a position of the external light source to introduce light emitted by the external light source.
[0016] In one embodiment, a radial dimension of an inner surface of the lower housing member gradually decreases in a direction from a fifth end to a sixth end. The inner surface of the lower housing member is concave toward a second end of the inner cavity member; the inner side of the lower housing member is a side close to the inner cavity member.
[0017] In one embodiment, the fifth end of the lower housing member is connected to the fourth end of the outer housing member, and the inner surface of the lower housing member is joined to the inner surface of the outer housing member.
[0018] In one embodiment, an absorbent paint layer is provided on the outer surfaces of both the outer housing member and the lower housing member;
[0019] Wherein, the outer side of the outer housing member faces away from the inner side of the outer housing member, and the outer side of the lower housing member is a side away from the inner cavity member.
[0020] In one embodiment, the inner surface of the outer shell member, the inner and outer surfaces of the inner cavity member, and the inner surface of the lower shell member all have diffuse reflection properties; the inner side of the lower shell member is the side close to the inner cavity member.
[0021] In one embodiment, the inner surface of the outer shell member and the outer surface of the inner cavity member have mirror reflection properties; the inner surface of the inner cavity member and the inner surface of the lower shell member both have diffuse reflection properties; the inner side of the lower shell member is the side close to the inner cavity member.
[0022] In one embodiment, the lower housing member is fixedly connected to the outer housing member via a second fixing member.
[0023] In a second aspect, the present application further provides a code reading device, comprising:
[0024] Lighting accessories such as those mentioned above;
[0025] The code reader is fixed to the upper end surface of the outer shell of the lighting accessory and is used to provide light to the lighting accessory.
[0026] The above-mentioned lighting accessory and code reading device include an outer shell member, an inner cavity member and a lower shell member; the outer shell member has a third end and a fourth end, and the inner surface of the outer shell member and the outer surface of the inner cavity member constitute a light guide channel to multiple reflect the light emitted by the external light source; the inner side of the outer shell member is a side close to the inner cavity member; the inner cavity member has a first end and a second end, a light inlet connected to the light guide channel is formed between the first end of the inner cavity member and the third end of the outer shell member, and a light outlet connected to the light guide channel is formed between the second end of the inner cavity member and the fourth end of the outer shell member; the outer side of the inner cavity member is a side close to the outer shell member; the lower shell member has a fifth end and a sixth end, the fifth end of the lower shell member is close to the fourth end of the outer shell member, and the sixth end of the lower shell member forms the light outlet of the lighting accessory, and the lower shell member is used to reflect the light emitted from the light outlet of the light guide channel to the inner surface of the inner cavity member, so that the inner surface of the inner cavity member reflects the light to the target object through the light outlet of the lighting accessory. It can be seen that in the present application, the inner surface of the outer shell and the outer surface of the inner cavity form a light guide channel, so that the light from the external light source is reflected multiple times, and then, under the reflection effect of the inner surface of the lower shell, most of the light is reflected to the inner surface of the inner cavity, and finally the light is reflected to the target object, which optimizes the light path and improves the uniformity of the light. In addition, the light source in the code reader can be directly used as the light source of the lighting accessory, without the need to add an external light source, which reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] To more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0028] Figure 1 A cross-sectional view of a lighting accessory in an embodiment of the present application;
[0029] Figure 2 An optical path diagram of light in a lighting accessory in an embodiment of the present application;
[0030] Figure 3 A top view of a code reading device in an embodiment of the present application;
[0031] Figure 4 A cross-sectional view of a code reading device in an embodiment of the present application.
[0032] Reference numerals in the specification drawings:
[0033] 100: Lighting accessory; 110: Outer housing member; 111: Inner side of the outer housing member; 112: Outer side of the outer housing member; 113: Card slot; 114: Upper end face; 120: Inner cavity member; 121: Outer side of the inner cavity member; 122: Inner side of the inner cavity member; 123: Fixed support pillar; 130: Lower housing member; 131: Inner side of the lower housing member; 132: Outer side of the lower housing member; 140: Light guide channel; 210: First fixing member; 220: External light source; 230: Second fixing member; 240: Code reader; 241: Image sensor; 242: Imaging lens; 243: LED fill light; 250: Third fixing member. Detailed implementation manners
[0034] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will provide a detailed description of the specific implementation manners of the present application in conjunction with the drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0035] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.
[0036] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0037] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0038] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.
[0040] In the related art, since the direct light source of the intelligent code reader cannot cover all application scenarios, for example, the code reading background of a curved surface shape, the code reading background of an uneven smooth surface, the code reading background of metal or mirror, etc., an external light source is additionally provided to achieve the purpose of high imaging uniformity. Uniform illumination can be achieved through the external light source. The light source provides illumination from multiple directions, which can help image curved, shiny and uneven surfaces. However, the additional light source is an external light source relative to the code reader, and a light source controller, a power cord and a light source line need to be additionally installed. This not only increases the cost, but also has a large assembly volume and is inconvenient to use. Based on this, the present application provides an illumination accessory, which can avoid adding an external light source, and the light can be evenly emitted to the target object through the light source of the code reader itself.
[0041] In the embodiments of the present application, the inner side and the outer side of the outer housing member are two sides arranged in opposite directions, the outer side and the inner side of the inner cavity housing member are two sides arranged in opposite directions, and the outer side and the inner side of the lower housing member are two sides arranged in opposite directions. Among them, the inner side of the outer housing member is the side close to the outer side of the inner cavity housing member, the inner side of the lower housing member is the side close to the inner cavity housing member, and the outer side of the lower housing member is the side close to the target object during use.
[0042] In one embodiment, refer to the attached Figure 1 , attached Figure 1 shows a cross-sectional view of the illumination accessory 100 in this embodiment. The illumination accessory 100 in this embodiment includes an outer housing member 110, an inner cavity housing member 120 and a lower housing member 130. The outer housing member 110 has a third end and a fourth end. The inner surface 111 of the outer housing member 110 and the outer surface 121 of the inner cavity housing member 120 form a light guide channel 140 to reflect the light emitted by the external light source multiple times; the inner side 111 of the outer housing member 110 is the side close to the inner cavity housing member 120.
[0043] The inner cavity housing member 120 has a first end and a second end. An inlet for connecting the light guide channel 140 is formed between the first end of the inner cavity housing member 120 and the third end of the outer housing member 110, and an outlet for connecting the light guide channel 140 is formed between the second end of the inner cavity housing member 120 and the fourth end of the outer housing member 110; the outer side 121 of the inner cavity housing member 120 is the side close to the outer housing member 110.
[0044] The lower housing member 130 has a fifth end and a sixth end. The fifth end of the lower housing member 130 is close to the fourth end of the outer housing member 110. The sixth end of the lower housing member 130 forms the light outlet of the lighting fitting 100. The lower housing member 130 is configured to reflect the light reflected by the light guide channel 140 to the inner surface 122 of the inner cavity member 120, so that the inner surface 122 of the inner cavity member 120 reflects the light through the light outlet of the lighting fitting 100 to the target object.
[0045] The outer housing member 110 is disposed outside the inner cavity member 120. To ensure the structural stability of the lighting fitting 100, the inner cavity member 120 can be fixed to the inner side 111 of the outer housing member 110, and the lower housing member 130 can be fixed to one end of the outer housing member 110 close to the outgoing light of the light guide channel 140.
[0046] To ensure the uniformity of the light emitted from the lighting fitting 100, a diffuse reflection property can also be provided on the inner surface 122 of the inner cavity member 120. For example, a material with a diffuse reflection property can be selected to fabricate the inner cavity member 120. Another example is to provide a coating with a diffuse reflection property on the inner surface 122 of the inner cavity member 120. The present invention is not limited thereto. Exemplarily, the lighting fitting 100 in the embodiments of the present application can be fabricated by 3D printing. When spraying a nano-diffuse reflection coating, the coating can be made of a barium-sulfur formula, which has advantages such as high diffuse reflectivity, non-toxicity, optical stability, low cost, and light weight. Another example is that the lighting fitting 100 in the embodiments of the present application can be fabricated by mold forming. For example, an optical grade resin is used, which has advantages such as a high diffuse reflectivity ratio, high Lambertian property, chemical inertness, thermal stability, and high wear resistance.
[0047] The more times the light emitted by the external light source is reflected in the light guide channel 140, the more uniform the lighting effect of the lighting fitting 100. Exemplarily, the size of the light guide channel 140 can be adjusted by adjusting the distance between the outer housing member 110 and the inner cavity member 120, so as to adjust the number of times the light emitted by the external light source is reflected in the light guide channel 140. Exemplarily, the number of times the light emitted by the external light source is reflected in the light guide channel 140 can be set between 2 and 5 times, such as 2 times, 3 times, 4 times, 5 times, and the present invention is not limited thereto.
[0048] In this embodiment, the light guide channel 140 is formed by the inner surface 111 of the outer shell 110 and the outer surface 121 of the inner cavity 120, so that the light from the external light source can be reflected multiple times, and then, under the reflection effect of the inner surface of the lower shell 130, most of the light is reflected to the inner surface 122 of the inner cavity 120, and finally the light is reflected to the target object, thereby optimizing the optical path and improving the uniformity of the light. In addition, the light source provided in the code reader can be directly used as the light source of the lighting accessory 100, without the need to add an external light source, thereby reducing the cost.
[0049] In one embodiment, the inner cavity member has a first end and a second end; the radial dimension of the outer surface and / or the inner surface of the inner cavity member gradually increases in a direction from the first end to the second end.
[0050] Exemplarily, the radial dimensions of the outer surface and the inner surface of the inner cavity body can both increase linearly in the direction from the first end to the second end, thereby increasing the illumination area of the light reflected from the inner surface of the inner cavity body and providing a larger effective field of view cavity space.
[0051] In another exemplary manner, the radial dimension of the outer surface of the inner cavity body can increase linearly in the direction from the first end to the second end, and the radial dimension of the inner surface of the inner cavity body can increase nonlinearly in the direction from the first end to the second end, thereby increasing the curvature of the inner surface of the inner cavity body and ensuring that more light can be reflected to the target object, thereby reducing light loss.
[0052] In one embodiment, continue to refer to the attached Figure 1 The inner cavity body 120 includes an inner cavity body and a light receiving portion connected to the end of the inner cavity body. The light receiving portion is located at a first end of the inner cavity body 120. The outer surface of the light receiving portion is inclined toward the inner side 111 of the outer shell 110 relative to the outer surface of the inner cavity body. The outer surface of the light receiving portion is an arc surface.
[0053] In this embodiment, the outer surface of the light receiving portion is inclined toward the inner side 111 of the outer shell 110 relative to the outer surface of the inner cavity body. The outer surface of the light receiving portion is an arc-shaped surface, which can collect most of the light emitted by the external light source into the light guiding channel 140 to reduce light loss.
[0054] In one embodiment, continue to refer to the attached Figure 1 The inner cavity body 120 also has a fixing support 123 arranged on the outside of the inner cavity body; the fixing support 123 is used to fix the inner cavity body to the outer cavity body 110 through the first fixing member 210.
[0055] Among them, the first fixing member 210 can be a screw tool, such as a screw, a bolt (used in cooperation with a nut), a stud, etc. The fixing pillar 123 is fixedly connected to the outer housing member 110 through the first fixing member 210, so that the inner cavity member 120 is fixedly connected to the outer housing member 110, improving the structural stability of the lighting accessory 100. In addition, removing the first fixing member 210 can disassemble the lighting accessory 100 for convenient carrying, improving the portability of the lighting accessory 100.
[0056] In one embodiment, continue to refer to the appendix Figure 1 , a clamping groove 113 is provided on the inner side 111 of the outer housing member 110; the position of the clamping groove 113 corresponds to the position of the fixing pillar 123, so that the fixing pillar 123 is embedded in the clamping groove 113, and the inner cavity main body is fixedly connected to the outer housing member 110 through the first fixing member 210.
[0057] In this embodiment, the clamping groove 113 is provided on the inner side 111 of the outer housing member 110, so that the fixing pillar 123 of the inner cavity member 120 can be embedded in the clamping groove 113. In the case where the first fixing member 210 is loose, the structural stability between the outer housing member 110 and the inner cavity member 120 can also be ensured.
[0058] In one embodiment, the outer housing member has a third end and a fourth end; the radial dimension of the outer surface and / or the inner surface of the outer housing member gradually increases in the direction from the third end to the fourth end; the outer side of the outer housing member is opposite to the inner side of the outer housing member.
[0059] Exemplarily, the radial dimension of the outer surface and / or the inner surface of the outer housing member can linearly increase in the direction from the third end to the fourth end. Another exemplarily, the increasing degree of the radial dimension of the outer surface and / or the inner surface of the outer housing member in the direction from the third end to the fourth end can correspond to the increasing degree of the radial dimension of the outer surface and the inner surface of the inner cavity member in the direction from the first end to the second end, so as to ensure that the size of the light guiding channel meets the requirement of the number of light reflections.
[0060] In one embodiment, continue to refer to the appendix Figure 1 , the third end of the outer housing member 110 is provided with an upper end surface 114, and the upper end surface 114 extends in the direction radially pointing to the inner cavity member 120, and a light inlet for communicating with the light guiding channel 140 is formed between the extension end point and the first end of the inner cavity member 120; wherein, the light inlet of the light guiding channel 140 corresponds to the position of the external light source to introduce the light emitted by the external light source.
[0061] In this embodiment, the upper end surface 114 can be combined with an external light source. Exemplarily, the upper end surface 114 can be attached to the light-emitting surface of the external light source so that the light emitted by the external light source can enter the light guide channel 140 through the light inlet, improving the usage compatibility between the lighting accessory 100 and the external light source.
[0062] In one embodiment, continue to refer to the attached Figure 1 , the lower housing member 130 has a fifth end and a sixth end; the radial dimension of the inner side 131 surface of the lower housing member 130 gradually decreases in the direction from the fifth end to the sixth end, and the inner side 131 surface of the lower housing member 130 is concave toward the second end of the inner cavity member 120; the inner side 131 of the lower housing member 130 is the side close to the inner cavity member 120.
[0063] In this embodiment, the radial dimension of the inner side 131 surface of the lower housing member 130 gradually decreases in the direction from the fifth end to the sixth end, and the inner side 131 surface of the lower housing member 130 is concave toward the second end of the inner cavity member 120, which can enable the light emitted from the light guide channel 140 to be reflected by the inner side 131 surface of the lower housing member 130 to the inner cavity member 120 as much as possible, reducing light loss.
[0064] In one embodiment, the fifth end of the lower housing member 130 is connected to the fourth end of the outer housing member 110, and the inner surface of the lower housing member 130 is in contact with the inner surface of the outer housing member 110.
[0065] In one embodiment, the sixth end of the lower housing member 130 forms the light outlet of the lighting accessory 100. The light outlet of the lighting accessory 100 is used to act on the target object through the light reflected by the inner surface of the inner cavity member 120. The ratio between the diameter of the light outlet of the lighting accessory 100 and the height of the lower housing member 130 is 0.3 - 0.35 to ensure that the lighting accessory 100 forms an effective field of view cavity space, which can meet the lighting requirements of a general large field of view.
[0066] In one embodiment, the fourth end of the outer housing member 110 forms an outer housing light outlet, and the diameter of the outer housing light outlet can be 157 mm. The first end of the inner cavity member 120 forms an inner cavity light inlet, and the diameter of the inner cavity light inlet can be 22 mm. The second end of the inner cavity member 120 forms an inner cavity light outlet, and the diameter of the inner cavity light outlet can be 105 mm.
[0067] In one embodiment, the overall height of the lighting accessory 100 can be 59.5 mm.
[0068] In one embodiment, the ratio between the diameter of the second light outlet and the overall height of the lighting accessory 100 can be 1.5 - 2 to ensure that the lighting accessory forms an effective field of view cavity space, which can meet the lighting requirements of a general large field of view.
[0069] In one embodiment, as Figure 1 , light-absorbing paint layers ( Figure 1 , not shown) are correspondingly provided on the outer surface 112 of the outer housing member 110 and the outer surface 132 of the lower housing member 130; wherein, the outer side 112 of the outer housing member 110 is opposite to the inner side 111 of the outer housing member 110, and the outer side 132 of the lower housing member 130 is the side away from the inner cavity member 120.
[0070] Exemplarily, the light-absorbing paint layer can be a black light-absorbing paint layer.
[0071] In this embodiment, light-absorbing paint layers are correspondingly provided on both the outer surface 112 of the outer housing member 110 and the outer surface 132 of the lower housing member 130, which can reduce stray light interference, reduce the reflection and scattering of light inside the housing, make the light irradiate the object to be measured more concentratedly, thereby improving the clarity and accuracy of imaging and reducing the error rate.
[0072] In one embodiment, the inner surface 111 of the outer housing member 110, the inner surface 122 and the outer surface 121 of the inner cavity member 120, and the inner surface 131 of the lower housing member 130 all have a diffuse reflection property; the inner side 131 of the lower housing member 130 is the side close to the inner cavity member 120.
[0073] Exemplarily, the inner surface 111 of the outer housing member 110, the inner surface 122 and the outer surface 121 of the inner cavity member 120, and the inner surface 131 of the lower housing member 130 all have a diffuse reflection property and a high reflectivity property. For example, the reflectivity of the inner surface 111 of the outer housing member 110, the inner surface 122 and the outer surface 121 of the inner cavity member 120, and the inner surface 131 of the lower housing member 130 is higher than 90%, and the diffuse reflectivity of the inner surface 111 of the outer housing member 110, the inner surface 122 and the outer surface 121 of the inner cavity member 120, and the inner surface 131 of the lower housing member 130 is higher than 95%.
[0074] In this embodiment, referring to the attached Figure 2 , the attached Figure 2 shows the light path diagram of the light in the lighting fixture 100. The light emitted by the external light source 220 passes through the light guide channel 140 of the lighting fixture 100 in this embodiment, and undergoes the first directional diffuse reflection through the outer surface 121 of the inner cavity member 120, and undergoes the second directional diffuse reflection on the inner surface 111 of the outer housing member 110; further, it reaches the inner surface 131 of the lower housing member 130 of the lighting fixture 100, and the light beam is collected by the inner surface 131 of the lower housing member 130 to undergo the third directional diffuse reflection to form a secondary light source; further, it reaches the inner surface 122 of the inner cavity member 120 of the lighting fixture 100 to form uniformly illuminated light, illuminating the target object to improve the light uniformity.
[0075] In one embodiment, the inner surface 111 of the outer housing member 110 and the outer surface 121 of the inner cavity member 120 have specular reflection properties (such as smooth reflection); the inner surface 122 of the inner cavity member 120 and the inner surface 131 of the lower housing member 130 both have diffuse reflection properties; the inner side 131 of the lower housing member 130 is the side close to the inner cavity member 120.
[0076] Compared with the previous embodiment, in this embodiment, continue to refer to the attached Figure 2 , the light emitted by the external light source 220 passes through the light guide channel 140 of the lighting accessory 100, and undergoes the first smooth reflection through the outer surface 121 of the inner cavity member 120, and undergoes the second specular emission (such as the second smooth reflection) on the inner surface 111 of the outer housing member 110; further, it reaches the lower housing member 130 of the lighting accessory 100, and the light beam is collected through the inner side 131 of the inner lower housing member 130 to perform the third directional diffuse reflection to form a secondary light source; further, it reaches the inner surface 122 of the inner cavity member 120 of the lighting accessory 100 to form uniformly illuminated light for illuminating the target object. The light undergoes specular reflection (such as smooth reflection and smooth reflection) in the light guide channel 140 and only undergoes diffuse reflection when entering the inner surface of the lower housing member 130 and the inner surface 122 of the inner cavity member 120, which can ensure the uniformity of the light while ensuring the light brightness and improving the lighting efficiency.
[0077] In one embodiment, the lower housing member is fixedly connected to the outer housing member through a second fixing member.
[0078] Exemplarily, the second fixing member can be a screw tool, such as a screw, a bolt (used in cooperation with a nut), a stud, etc.
[0079] In one embodiment, the present application further provides a code reading device. The code reading device in this embodiment includes a code reader and the lighting accessory in any of the above embodiments. The code reader is fixed on the upper end surface of the outer housing member of the lighting accessory and is used to provide light to the lighting accessory.
[0080] Exemplarily, as Figure 3 and the attached Figure 4 , the attached Figure 3 shows a top view of the code reading device in this embodiment, and the attached Figure 4 shows a cross-sectional view of the code reading device in this embodiment. Among them, the inner cavity member 120 and the outer housing member 110 are fixedly connected through a first fixing member 210; the outer housing member 110 and the lower housing member 130 are fixedly connected through a second fixing member 230; the outer housing member 110 and the code reader 240 are fixedly connected through a third fixing member 250. The code reader 240 in this embodiment may include an image sensor 241, an imaging lens 242, and an LED fill light 243.
[0081] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.
[0082] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.
Claims
1. A lighting accessory, characterized in that: It includes an outer shell member, an inner cavity member and a lower shell member; The outer shell has a third end and a fourth end, and the inner surface of the outer shell and the outer surface of the inner cavity form a light-guiding channel to reflect the light emitted by the external light source multiple times; the inner side of the outer shell is a side close to the inner cavity; The inner cavity body has a first end and a second end, a light inlet communicating with the light guide channel is formed between the first end of the inner cavity body and the third end of the outer shell, and a light outlet communicating with the light guide channel is formed between the second end of the inner cavity body and the fourth end of the outer shell; the outer side of the inner cavity body is a side close to the outer shell; The lower shell member has a fifth end and a sixth end, the fifth end of the lower shell member is close to the fourth end of the outer shell member, and the sixth end of the lower shell member forms a light outlet of the lighting accessory, and the lower shell member is used to reflect the light emitted from the light outlet of the light guide channel to the inner surface of the inner cavity member, so that the inner surface of the inner cavity member reflects the light through the light outlet of the lighting accessory to the target object.
2. The lighting accessory according to claim 1, characterized in that: The radial dimension of the outer surface and / or the inner surface of the inner cavity member gradually increases in the direction from the first end to the second end.
3. The lighting accessory according to claim 1, characterized in that: The inner cavity body comprises an inner cavity main body and a light receiving portion connected to the end of the inner cavity main body, the light receiving portion is located at the first end of the inner cavity body, the outer surface of the light receiving portion is inclined toward the inner side of the outer cavity body relative to the outer surface of the inner cavity main body, and the outer surface of the light receiving portion is an arc-shaped surface.
4. The lighting accessory according to claim 3, characterized in that: The inner cavity body also has a fixing support arranged on the outer side of the inner cavity body; the fixing support is used to fix the inner cavity body to the outer cavity body through a first fixing member.
5. The lighting accessory according to claim 4, characterized in that: A slot is provided on the inner side of the outer shell; the position of the slot corresponds to the position of the fixing support, so that the fixing support is embedded in the slot, and the inner cavity body is fixedly connected to the outer shell through the first fixing member.
6. The lighting accessory according to claim 2, characterized in that: The radial dimensions of the outer surface and / or inner surface of the outer shell member gradually increase in the direction from the third end to the fourth end; the outer side of the outer shell member is opposite to the inner side of the outer shell member.
7. The lighting accessory according to claim 2, characterized in that: The third end of the outer shell is provided with an upper end surface, the upper end surface extends radially toward the direction of the inner cavity, and a light inlet communicating with the light guide channel is formed between the end point of the extension and the first end of the inner cavity; Wherein, the light entrance of the light-guiding channel corresponds to the position of the external light source so as to guide the light emitted by the external light source.
8. The lighting accessory according to claim 6, characterized in that: The radial dimension of the inner surface of the lower shell part gradually decreases in the direction from the fifth end to the sixth end, and the inner surface of the lower shell part is concave toward the second end of the inner cavity part; the inner side of the lower shell part is the side close to the inner cavity part.
9. The lighting accessory according to claim 6, characterized in that: The fifth end of the lower housing member is connected to the fourth end of the outer housing member, and the inner surface of the lower housing member is connected to the inner surface of the outer housing member.
10. The lighting accessory according to claim 1, characterized in that: The outer surfaces of the outer shell member and the lower shell member are respectively provided with a light-absorbing paint layer; The outer side of the outer shell member is opposite to the inner side of the outer shell member, and the outer side of the lower shell member is the side away from the inner cavity member.
11. The lighting accessory according to claim 10, characterized in that: The inner surface of the outer shell member, the inner surface and outer surface of the inner cavity member, and the inner surface of the lower shell member all have diffuse reflection properties; the inner side of the lower shell member is the side close to the inner cavity member.
12. The lighting accessory according to claim 10, characterized in that: The inner surface of the outer shell member and the outer surface of the inner cavity member have mirror reflection properties; the inner surface of the inner cavity member and the inner surface of the lower shell member both have diffuse reflection properties; the inner side of the lower shell member is the side close to the inner cavity member.
13. The lighting accessory according to claim 1, characterized in that: The lower housing part is fixedly connected to the outer housing part via a second fixing part.
14. A code reading device, characterized in that: include: A lighting accessory as claimed in any one of claims 1 to 13; The code reader is fixed to the upper end surface of the outer shell of the lighting accessory and is used to provide light to the lighting accessory.