LED lamp strip lighting unit
By designing a compact LED light strip lighting unit, using specific pad layout and light emitting groove design, the problems of unsatisfactory light efficiency and uneven light source distribution are solved, and efficient and uniform lighting effects are achieved.
Patent Information
- Application Number
- CN202422304135.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-21
AI Technical Summary
The existing LED light strips are large in size and not compact in arrangement, resulting in unsatisfactory light effects and uneven distribution of light sources, which are prone to dark areas, affecting the lighting effect and aesthetics.
An LED light strip lighting unit is designed, including a carrier plate and a shell. The outer surface of the shell is hollowed out with a light emitting groove, and a positive electrode pad, a negative electrode pad and an insulating substrate arranged spaced on the carrier plate. The LED light emitting chip is fixed to the pad. Through the specific pad layout and light emitting groove design, the gathering and uniform distribution of light is achieved.
Through compact design and reasonable layout, the small size of the LED light strip lighting unit (7mm long and 2mm wide) is achieved, which improves the integrated density and light efficiency of the light source, solves the problem of uneven light source distribution, and significantly improves the lighting effect and aesthetics.
Smart Images
Figure CN223036290U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of LED light strips, and particularly to an LED light strip lighting unit. Background Art
[0002] Due to its advantages of long service life, energy conservation and environmental protection, LED light strips have been widely used in the decorative lighting market. Currently, the LED flexible light strips on the market are usually composed of LED lamp beads and flexible printed circuit boards (FPCs). However, the existing light strips have problems such as large lamp bead sizes and non-compact arrangement methods. At the same time, the light emitted by the lamp beads is prone to scattering, its circuit connection is complex, and the light effect performance is not ideal. In addition, due to the uneven distribution of light sources, dark areas are likely to appear in the lighting area of the light strip, thereby affecting the overall lighting effect and aesthetics. Summary of the Utility Model
[0003] (1) Problems to be Solved
[0004] The technical problem to be solved by the utility model is to provide an LED light strip lighting unit in view of the current situation of the prior art.
[0005] (2) Technical Solutions
[0006] The utility model is realized through the following technical solutions: an LED light strip lighting unit, including a carrier board and a housing installed on the carrier board; a light-emitting groove is hollowed out and formed on the outer surface of the housing; the carrier board includes a positive electrode pad, a negative electrode pad arranged at intervals, and an insulating matrix that separately isolates the positive electrode pad and the negative electrode pad; an LED light-emitting chip is fixed on the positive electrode pad or the negative electrode pad; the positive electrode interface end of the LED light-emitting chip is wire-connected to the positive electrode pad; the negative electrode interface end of the LED light-emitting chip is wire-connected to the negative electrode pad.
[0007] By adopting the above technical solutions, after being powered on, the power supply flows through the positive electrode pad, the LED light-emitting chip, and the negative electrode pad. The electrons and holes in the LED chip recombine, releasing energy and generating light; the light released by the LED light-emitting chip is gathered by the light-emitting groove with a certain opening angle and forms a light source in the shape of the light-emitting groove outward. This lighting unit is mainly used to manufacture a narrow light (strip-shaped) light source device, achieving a better light source effect through a smaller unit size and a more reasonable layout; through a reasonable layout and a compact design, the utility model enables the size of the LED light strip lighting unit to be very small, reaching a small size of 7 mm in length and 2 mm in width.
[0008] Further, the positive electrode pads include a first positive electrode pad and a second positive electrode pad; the negative electrode pads include a first negative electrode pad and a second negative electrode pad; the first positive electrode pad is disposed at the upper left of the carrier board, and the second positive electrode pad is disposed at the lower right of the carrier board; the first negative electrode pad is disposed at the lower left of the carrier board, and the second negative electrode pad is disposed at the upper right of the carrier board.
[0009] Further, the positive electrode pad includes a completely exposed positive electrode access portion and a positive electrode connection portion partially blocked by the housing; the negative electrode pad includes a completely exposed negative electrode access portion and a negative electrode connection portion partially blocked by the housing.
[0010] Further, a first LED light-emitting chip is disposed on the first negative electrode pad. The negative electrode interface end of the first LED light-emitting chip is wire-connected to the second negative electrode pad, and the positive electrode interface end of the first LED light-emitting chip is wire-connected to the first positive electrode pad; a second LED light-emitting chip is disposed on the second negative electrode pad. The positive electrode interface end of the second LED light-emitting chip is wire-connected to the second positive electrode pad, and the negative electrode interface end of the second LED light-emitting chip is wire-connected to the second negative electrode pad.
[0011] Further, a first LED light-emitting chip is disposed on the first negative electrode pad. The negative electrode interface end of the first LED light-emitting chip is wire-connected to the first negative electrode pad, and the positive electrode interface end of the first LED light-emitting chip is wire-connected to the first positive electrode pad; a second LED light-emitting chip is disposed on the second negative electrode pad. The positive electrode interface end of the second LED light-emitting chip is wire-connected to the second positive electrode pad, and the negative electrode interface end of the second LED light-emitting chip is wire-connected to the second negative electrode pad.
[0012] Further, the cross-section of the light-emitting groove is an involute opening; the vertical exit angle of the light-emitting groove is 39.97 degrees, and the horizontal exit angle is 66.17 degrees.
[0013] Further, the first positive electrode pad, the second positive electrode pad, the first negative electrode pad, and the second negative electrode pad are made of electroplated copper foil.
[0014] Further, the housing is made of plastic.
[0015] (III) Beneficial Effects
[0016] 1. The utility model is mainly used for manufacturing a narrow light (strip-shaped) light source device. Through reasonable layout and compact design, the size of the LED strip lighting unit can be made very small, reaching a small size of 7 mm in length and 2 mm in width; when densely arranged on a flexible circuit board, the emitted light has a very high brightness and good light efficiency.
[0017] 2. The positive and negative electrodes of the power supply of the present utility model are connected through solder pads, and the wire arrangement is simple and neat; the outer shell is designed with a light-emitting groove with a specific outlet angle. During illumination, each of the densely arranged illumination light sources emits light independently and converges, with uniform light source distribution and good light efficiency, solving the problems of messy light and easy appearance of illumination dark areas. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.
[0019] Figure 1 is a top view of an LED strip lighting unit according to the present utility model;
[0020] Figure 2 is a schematic structural diagram of a carrier board in an LED strip lighting unit according to the present utility model;
[0021] Figure 3 is a right view of an LED strip lighting unit according to the present utility model;
[0022] Figure 4 is a front view of an LED strip lighting unit according to the present utility model;
[0023] Figure 5 is a second circuit routing diagram of an LED strip lighting unit according to the present utility model;
[0024] The reference numerals are explained as follows:
[0025] 1. Carrier board; 2. Outer shell; 3. Light-emitting groove; 4. Insulating substrate; 5. First positive electrode solder pad; 6. Second positive electrode solder pad; 7. First negative electrode solder pad; 8. Second negative electrode solder pad; 9. First LED light-emitting chip; 10. Second LED light-emitting chip; 11. Negative electrode interface end; 12. Positive electrode interface end; 13. Negative electrode access part; 14. Negative electrode connection part; 15. Positive electrode access part; 16. Positive electrode connection part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0027] In the description of the present application, it should be understood that the terms "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present application.
[0028] See also Figures 1 - 5 The utility model provides a technical solution: an LED light strip lighting unit, including a carrier board 1 and a shell 2 mounted on the carrier board 1; the outer surface of the shell 2 is hollowed out to form a light emitting groove 3; the carrier board 1 includes a positive electrode pad, a negative electrode pad and an insulating substrate 4 that separates the positive electrode pad from the negative electrode pad; an LED light emitting chip is fixed on the positive electrode pad or the negative electrode pad; the positive electrode interface end 12 of the LED light emitting chip is connected to the positive electrode pad wire; the negative electrode interface end 11 of the LED light emitting chip is connected to the negative electrode pad wire. After power is turned on, the power flows through the positive electrode pad, the LED light emitting chip, and the negative electrode pad, and the electrons and holes in the LED chip recombine to release energy and generate light; the light released by the LED light emitting chip gathers the light through the light emitting groove 3 with a certain opening angle and forms a light source in the shape of the light emitting groove 3 outward. This lighting unit is mainly used to make narrow light (strip) light source devices. Through smaller unit size and more reasonable layout, the LED integration density of the narrow light (strip) light source device is higher, the arrangement is more reasonable, and a better light source effect is achieved. Through reasonable layout and compact design, the utility model makes the size of the LED light strip lighting unit very small, reaching a small size of 7mm in length and 2mm in width.
[0029] Preferably, the positive electrode pad includes a positive electrode pad 1 5 and a positive electrode pad 2 6; the negative electrode pad includes a negative electrode pad 1 7 and a negative electrode pad 2 8; the positive electrode pad 1 5 is arranged at the upper left of the carrier 1, and the positive electrode pad 2 6 is arranged at the lower right of the carrier 1; the negative electrode pad 1 7 is arranged at the lower left of the carrier 1, and the negative electrode pad 2 8 is arranged at the upper right of the carrier 1. At one end of the carrier 1, the shape of the negative electrode pad is similar to "丄", and the positive electrode pad 1 5 is arranged at the upper left vacancy, and the upper left portion of another inverted negative electrode pad is arranged at the right end vacancy. The two negative electrode pads are symmetrically and staggeredly distributed on the carrier 1. This staggered distribution method is conducive to the connection between the LED chip and the power pad wire, shortening the path of the connecting wire, and achieving the effect of reducing current loss.
[0030] Preferably, the positive electrode pad includes a completely exposed positive electrode access portion 15 and a positive electrode connection portion 16 partially blocked by the housing 2; the negative electrode pad includes a completely exposed negative electrode access portion 13 and a negative electrode connection portion 14 partially blocked by the housing 2. The external positive electrode access portion 15 and negative electrode access portion 13 are connected to a power source, which can distinguish the inside and outside of the lighting unit and facilitate power access.
[0031] Preferably, the cross-section of the light-emitting groove 3 is an involute opening; the vertical exit angle of the light-emitting groove 3 is 39.97 degrees, and the horizontal exit angle is 66.17 degrees. The involute opening can gather light and maintain a uniform output light distribution.
[0032] Preferably, the first positive electrode pad 5, the second positive electrode pad 6, the first negative electrode pad 7, and the second negative electrode pad 8 are made of electroplated copper foil. Electroplated copper foil has excellent thermal and electrical conductivity, low cost, and light weight. As a conduction path, it can increase the heat dissipation effect of the chip and reduce costs.
[0033] Preferably, the housing 2 is made of plastic. Plastic has low cost and good insulation. Using plastic to make the housing 2 can reduce costs.
[0034] The following are two specific embodiments of the present technical solution:
[0035] Embodiment 1:
[0036] As Figure 1 shown in the single-strip circuit layout:
[0037] Current flow 1: The first positive electrode pad 5 > the positive electrode access end of the first LED light-emitting chip 9 > the negative electrode access end of the first LED light-emitting chip 9 > the second negative electrode pad 8. Current flow 2: The second negative electrode pad 8 > the negative electrode access end of the second LED light-emitting chip 10 > the positive electrode access end of the second LED light-emitting chip 10 > the second positive electrode pad 6.
[0038] Specifically, the first LED light-emitting chip 9 is disposed on the first negative electrode pad 7. The negative electrode interface end 11 of the first LED light-emitting chip 9 is wire-connected to the second negative electrode pad 8, and the positive electrode interface end 12 of the first LED light-emitting chip 9 is wire-connected to the first positive electrode pad 5; the second LED light-emitting chip 10 is disposed on the second negative electrode pad 8. The positive electrode interface end 12 of the second LED light-emitting chip 10 is wire-connected to the second positive electrode pad 6, and the negative electrode interface end 11 of the second LED light-emitting chip 10 is wire-connected to the second negative electrode pad 8.
[0039] In this embodiment, the first LED light-emitting chip 9 and the second LED light-emitting chip 10 share a second negative electrode pad 8. By wire-connecting multiple LED strip lighting units and connecting to a power source, the vertical length of the LED strip can be increased. Densely arranging multiple small lighting units effectively improves the brightness and light source effect of the strip.
[0040] Embodiment 2:
[0041] As Figure 2 shown in the double unidirectional circuit arrangement:
[0042] Current flow 1: Positive electrode pad 1 -> Positive electrode access end of the first LED lighting chip 9 -> Negative electrode access end of the first LED lighting chip 9 -> Negative electrode pad 1. Current flow 2: Negative electrode pad 2 -> Negative electrode access end of the second LED lighting chip 10 -> Positive electrode access end of the second LED lighting chip 10 -> Positive electrode pad 2.
[0043] Specifically, the first LED lighting chip 9 is disposed on the negative electrode pad 1. The negative electrode interface end 11 of the first LED lighting chip 9 is electrically connected to the negative electrode pad 1 by a wire, and the positive electrode interface end 12 of the first LED lighting chip 9 is electrically connected to the positive electrode pad 1 by a wire. The second LED lighting chip 10 is disposed on the negative electrode pad 2. The positive electrode interface end 12 of the second LED lighting chip 10 is electrically connected to the positive electrode pad 2 by a wire, and the negative electrode interface end 11 of the second LED lighting chip 10 is electrically connected to the negative electrode pad 2 by a wire.
[0044] In this embodiment, multiple LED strip lighting units are electrically connected by wires, and the circuits of the first LED lighting chip 9 and the second LED lighting chip 10 do not interfere with each other. Multiple branches are separated from the total power supply of the strip and connected to multiple horizontally arranged LED lighting chips, which can increase the width of the LED strip.
[0045] Combining the above two schemes, arranging the LED strip lighting units and increasing the number of horizontal or vertical LED strip lighting units can manufacture LED strips of different sizes to meet the strip requirements customized.
[0046] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An LED light strip lighting unit, characterized in that: It comprises a carrier board and a shell mounted on the carrier board; the outer surface of the shell is hollowed out to form a light-emitting groove; the carrier board comprises a positive electrode pad and a negative electrode pad arranged at intervals, and an insulating substrate that separately isolates the positive electrode pad and the negative electrode pad; an LED light-emitting chip is fixed on the positive electrode pad or the negative electrode pad; the positive electrode interface end of the LED light-emitting chip is connected to the positive electrode pad wire; the negative electrode interface end of the LED light-emitting chip is connected to the negative electrode pad wire.
2. The LED light strip lighting unit according to claim 1, characterized in that: The positive electrode pad includes a positive electrode pad 1 and a positive electrode pad 2; the negative electrode pad includes a negative electrode pad 1 and a negative electrode pad 2; the positive electrode pad 1 is arranged at the upper left of the carrier, and the positive electrode pad 2 is arranged at the lower right of the carrier; the negative electrode pad 1 is arranged at the lower left of the carrier, and the negative electrode pad 2 is arranged at the upper right of the carrier.
3. The LED light strip lighting unit according to claim 2, characterized in that: The positive electrode pad includes a completely exposed positive electrode access portion and a positive electrode connecting portion with one side covered by the shell; the negative electrode pad includes a completely exposed negative electrode access portion and a negative electrode connecting portion with one side covered by the shell.
4. The LED light strip lighting unit according to claim 3, characterized in that: A first LED light-emitting chip is arranged on the negative electrode pad one, the negative electrode interface end of the first LED light-emitting chip is connected to the negative electrode pad two wires, and the positive electrode interface end of the first LED light-emitting chip is connected to the positive electrode pad one wire; a second LED light-emitting chip is arranged on the negative electrode pad two, the positive electrode interface end of the second LED light-emitting chip is connected to the positive electrode pad two wires, and the negative electrode interface end of the second LED light-emitting chip is connected to the negative electrode pad two wires.
5. The LED light strip lighting unit according to claim 3, characterized in that: A first LED light-emitting chip is arranged on the negative electrode pad one, the negative electrode interface end of the first LED light-emitting chip is connected to the negative electrode pad one wire, and the positive electrode interface end of the first LED light-emitting chip is connected to the positive electrode pad one wire; a second LED light-emitting chip is arranged on the negative electrode pad two, the positive electrode interface end of the second LED light-emitting chip is connected to the positive electrode pad two wire, and the negative electrode interface end of the second LED light-emitting chip is connected to the negative electrode pad two wire.
6. The LED light strip lighting unit according to claim 1, characterized in that: The cross section of the light emitting slot is a gradually opening type; the vertical exit angle of the light emitting slot is 39.97 degrees, and the horizontal exit angle is 66.17 degrees.
7. The LED light strip lighting unit according to claim 1, characterized in that: The positive electrode pad 1, the positive electrode pad 2, the negative electrode pad 1, and the negative electrode pad 2 are made of electroplated copper foil.
8. The LED light strip lighting unit according to claim 1, characterized in that: The housing is made of plastic.