Search

CN-122015057-A - Planar light-emitting module and LED lamp thereof

CN122015057ACN 122015057 ACN122015057 ACN 122015057ACN-122015057-A

Abstract

The invention provides a planar light-emitting module and an LED lamp thereof. The invention relates to a micro-structure array light guide plate, which comprises a substrate and a micro-structure array light guide plate, wherein an outer convex annular positioning part is arranged at the edge of the substrate, at least one adjusting groove is formed in the top of the annular positioning part, and a sealing adjusting piece is arranged in the adjusting groove.

Inventors

  • XIE QUANBO

Assignees

  • 江西省丰宇光电有限公司

Dates

Publication Date
20260512
Application Date
20260113

Claims (10)

  1. 1. A planar light emitting module comprises a substrate (1) and a microstructure array light guide plate (2) and is characterized in that an outer convex annular positioning part (11) is arranged at the edge of the substrate (1), at least one adjusting groove (12) is formed in the top of the annular positioning part (11), a sealing adjusting piece (13) is arranged in the adjusting groove (12), the sealing adjusting piece (13) is elastic and used for being in sealing and self-adapting connection with the microstructure array light guide plate (2), a light emitting array (14) is arranged on the surface of the substrate (1), the microstructure array light guide plate (2) is arranged on the outer side of the light emitting array (14) and is assembled with the annular positioning part (11) of the substrate (1) in a sleeved mode through a connecting ring (21), a prism array (22) corresponding to the light emitting array (14) is arranged on the microstructure array light guide plate (2) and used for converting a point light source into parallel light, the planar light emitting module further comprises a fine adjustment mechanism (3), the fine adjustment mechanism (3) acts on the microstructure array light guide plate (2), the micro-structure array light guide plate is used for adjusting the inclination angle of the micro-structure array light guide plate (2) relative to the substrate (1) during assembly, and a fixed sealing piece (4) is filled in an assembly gap between the connecting ring (21) and the annular positioning part (11).
  2. 2. The planar light emitting module according to claim 1, wherein the sealing adjusting member (13) is a silicone sealing strip, a rubber sealing strip or a metal elastic sheet with longitudinal elasticity, and the top shape of the sealing adjusting member is adapted to the lower surface of the edge of the microstructure array light guide plate (2).
  3. 3. The planar light-emitting module according to claim 1, wherein the fine adjustment mechanism (3) comprises a U-shaped frame (31) fixed on the base plate (1) or an external mounting structure, a limiting cylinder (311) fixedly connected to the U-shaped frame (31), an adjusting plate (32) connected with the back surface of the microstructure array light guide plate (2), and a limiting rod (321) connected with the adjusting plate (32) and the limiting cylinder (311), wherein an adjusting bolt (33) is rotatably connected to the U-shaped frame (31), and the adjusting bolt (33) is in threaded connection with a threaded hole in the adjusting plate (32).
  4. 4. The planar light-emitting module set as set forth in claim 3, wherein the fine adjustment mechanism (3) is provided in four positions corresponding to four corners of the planar light-emitting module set, respectively, to achieve stable multi-point leveling of the microstructure array light guide plate (2).
  5. 5. The planar light-emitting module as set forth in claim 1, wherein the prism array (22) is a plurality of protruding or recessed prism microstructures disposed on the light-emitting surface of the microstructure array light-guiding plate (2), and the arrangement density or shape of the prism microstructures is designed correspondingly according to the arrangement and light intensity distribution of the light sources in the light-emitting array (14).
  6. 6. A planar light emitting module according to claim 5, wherein the prism units of the prism array (22) have triangular, trapezoidal or arc cross sections, and the vertex angle or radius of curvature thereof is configured such that the light rays exiting the light emitting array (14) are refracted to form parallel light beams with a predetermined divergence angle.
  7. 7. A planar light emitting module according to claim 1, wherein the fixing seal member (4) is a sealant which is cured to form a rigid or semi-rigid connection, is filled and fixed between the inner wall of the connecting ring (21) and the outer wall of the annular positioning portion (11), and between the lower surface of the edge of the microstructure array light guide plate (2) and the top surface of the annular positioning portion (11), and is used for realizing permanent fixing and sealing.
  8. 8. A planar light emitting module as set forth in claim 1, wherein the light emitting array (14) is an LED chip array, mini LED chip array or Micro LED chip array.
  9. 9. An LED luminaire comprising a planar light emitting module according to any one of claims 1 to 8, and a driving power supply for powering the light emitting array (14).
  10. 10. The LED lamp of claim 9, wherein the LED lamp is an LED panel lamp, an LED down lamp, an LED desk lamp or a recessed linear lamp, and the planar light emitting module is mounted on a lamp housing or a bracket through the substrate (1).

Description

Planar light-emitting module and LED lamp thereof Technical Field The invention relates to the technical field of light-emitting modules, in particular to a planar light-emitting module and an LED lamp thereof. Background The planar light emitting module is a core optical device for integrating and shaping optical characteristics of a plurality of point light sources (such as LEDs), and aims to generate an emergent light field with uniformity, parallelism and high directivity. The module has important application value in the fields of high-end illumination, backlight display, professional optical equipment and the like, and the optical performance of the module directly depends on the accuracy and long-term stability of the relative positions of optical elements. Currently, in the production of a planar LED lighting device with high uniformity and high directivity, a support structure (such as a spacer or a pillar) is generally disposed between a substrate and a light guide plate, and is directly bonded and fixed by using an adhesive to integrate a plurality of point light sources into a uniform surface light source and control the light emitting direction. However, this has a problem that it is difficult to ensure the assembly accuracy and fine-tune the relative attitude (in particular, parallelism) of the optical element before curing. The adhesive cannot effectively fix the position before curing, and the structure which can be accurately and independently leveled before curing is lacked, so that the final assembly is easy to generate micron-sized inclination or stress deformation, the light emitting uniformity and the beam parallelism are poor, the illumination quality is affected, and the problem of poor stress or sealing caused by uneven thickness of an adhesive layer exists, so that a planar light emitting module and an LED lamp thereof are urgently needed. Disclosure of Invention The invention provides a planar light emitting module, which comprises a substrate and a microstructure array light guide plate, wherein an outer convex annular positioning part is arranged at the edge of the substrate, at least one adjusting groove is formed in the top of the annular positioning part, a sealing adjusting piece is arranged in the adjusting groove and is elastic and used for sealing and adaptively abutting against the microstructure array light guide plate, a light emitting array is arranged on the surface of the substrate, the microstructure array light guide plate is arranged on the outer side of the light emitting array and is assembled with the annular positioning part of the substrate in a sleeving manner through a connecting ring, a prism array corresponding to the light emitting array is arranged on the microstructure array light guide plate and used for converting a point light source into parallel emergent light, the planar light emitting module further comprises a fine adjustment mechanism which acts on the microstructure array light guide plate and is used for adjusting the inclination angle of the microstructure array light guide plate relative to the substrate during assembly, and a fixed sealing piece is filled in an assembly gap between the connecting ring and the annular positioning part. Further, the sealing adjusting piece is a silica gel sealing strip, a rubber sealing strip or a metal elastic sheet with longitudinal elasticity, and the top shape of the sealing adjusting piece is matched with the lower surface of the edge of the microstructure array light guide plate. The fine adjustment mechanism comprises a U-shaped frame fixed on the base plate or the external mounting structure, a limiting cylinder fixedly connected to the U-shaped frame, an adjusting plate connected with the back surface of the microstructure array light guide plate, and a limiting rod connected with the adjusting plate and the limiting cylinder, wherein the U-shaped frame is rotatably connected with an adjusting bolt, and the adjusting bolt is in threaded connection with a threaded hole in the adjusting plate. Further, the fine adjustment mechanisms are arranged in four and correspond to the four corner positions of the planar light-emitting module respectively, so that stable multi-point leveling of the microstructure array light guide plate is realized. Further, the prism array is a plurality of raised or recessed prism microstructures arranged on the light emitting surface of the microstructure array light guide plate, and the arrangement density or shape of the prism microstructures is correspondingly designed according to the arrangement and light intensity distribution of the light sources in the light emitting array. Further, the cross section of the prism units of the prism array is triangular, trapezoidal or arc-shaped, and the vertex angle or the curvature radius of the prism units is configured to enable light rays emitted from the light emitting array to form parallel light beams with preset divergence a