CN215764724U

CN215764724U - Lamp set

Info

Publication number: CN215764724U
Application number: CN202121320917.1U
Authority: CN
Inventors: 罗长浩; 林继草
Original assignee: Fuzhou Xicheng Electronic Co ltd
Current assignee: Fuzhou Xicheng Technology Co.,Ltd.
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-02-08
Anticipated expiration: 2031-06-15

Abstract

The utility model relates to the technical field of lamps, in particular to a lamp, which comprises a hollow shell, wherein a PCBA board and a light guide plate are arranged in the inner cavity of the shell, the light guide plate is positioned above the PCBA board, one side surface of the PCBA board, which is close to the light guide plate, is provided with lamp beads, the light guide plate is umbrella-shaped, the light emitting surface of a light source can be effectively enlarged, one side surface of the light guide plate, which is close to the PCBA board, is provided with protrusions, the protrusions are sunken towards the direction far away from the PCBA board to form grooves with inverted V-shaped vertical sections, and the grooves are positioned right above the lamp beads, so that the brightness right above the lamp beads is weakened, bright spots cannot occur, and the requirements on brightness and uniformity are met.

Description

Lamp set

Technical Field

The utility model relates to the technical field of lamps, in particular to a lamp.

Background

In automotive lamps, the lamps are required to have a brightness and uniformity that meet regulations, but are often difficult to implement due to structural space and cost. For example, a car logo lamp, through a plurality of lamp pearls as the light source, the implementation mode divides two kinds, one kind is with the side luminous lamp pearl and light reflector panel, light guide plate and diffuser plate, and another kind is with the top luminous lamp pearl and light reflector panel, light guide plate and diffuser plate realization, nevertheless utilizes ordinary light guide plate, can't effectively avoid the bright spot at lamp pearl center, can't satisfy the homogeneity requirement.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the technical problems to be solved by the utility model are as follows: the utility model provides a lamp, can make the luminance directly over the lamp pearl weaken, the bright spot can not appear to reach the requirement of luminance and homogeneity.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the utility model provides a lamp, includes a inside hollow casing, the casing inner chamber is equipped with PCBA board and light guide plate, the light guide plate is located PCBA board top, be equipped with the lamp pearl on a side that the PCBA board is close to the light guide plate, the light guide plate is umbelliform, a side that the light guide plate is close to the PCBA board is equipped with the arch, the arch is sunken to the direction of keeping away from the PCBA board and forms a vertical cross-section and be the recess of falling V-arrangement, the recess is located the lamp pearl directly over.

Furthermore, a side face, away from the PCBA board, of the light guide plate is covered with a leather grain layer.

Further, the diameter of the notch of the groove is larger than the width of the lamp bead.

Further, the groove depth of the groove ranges from 2.5mm to 3.7 mm.

Furthermore, the distance between the protrusions and the lamp beads ranges from 0.5mm to 1.5 mm.

The utility model has the beneficial effects that:

the light guide plate is umbrella-shaped, so that the light emitting surface of the light source can be effectively enlarged, the protrusion is arranged on one side surface of the light guide plate close to the PCBA, the protrusion is sunken towards the direction far away from the PCBA to form a groove with an inverted V-shaped vertical section, the groove is positioned right above the lamp bead, and the inverted V-shaped groove can refract light rays, so that the brightness right above the lamp bead is weakened, bright spots cannot occur, and the requirements on brightness and uniformity are met; the quantity of lamp pearl of the lamps and lanterns of this scheme design can be reduced by original 12 to 8, and the optical part only uses the light guide plate, has saved reflector panel and diffuser plate, has saved cost and space, has also avoided the heat dissipation problem.

Drawings

Fig. 1 is a schematic structural diagram of a lamp according to the present invention;

FIG. 2 is a schematic structural diagram of a lamp according to the present invention;

description of reference numerals:

1. a housing; 11. a lamp shade; 12. a lamp housing;

2. PCBA board; 21. a lamp bead;

3. a light guide plate; 31. a protrusion; 311. and (4) a groove.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1, the technical solution provided by the present invention:

From the above description, the beneficial effects of the present invention are:

From the above description, it can be known that the light source can be effectively diffused by covering a leather layer on the side of the light guide plate away from the PCBA board, so as to meet the requirements of brightness and uniformity.

From the above description, the diameter of the notch of the groove is greater than the width of the lamp bead, so that the brightness above the lamp bead is weakened, bright spots can not appear, and the requirements on brightness and uniformity are met.

Further, the groove depth of the groove ranges from 2.5mm to 3.7 mm.

From the above description, setting the groove depth of the groove to be in the range of 2.5mm to 3.7mm can further improve the brightness and uniformity of the lamp.

Referring to fig. 1 and fig. 2, a first embodiment of the present invention is:

referring to fig. 1, a lamp includes a hollow housing 1, an inner cavity of the housing 1 is provided with a PCBA board 2 and a light guide plate 3, the light guide plate 3 is located above the PCBA board 2, a lamp bead 21 is arranged on a side surface of the PCBA board 2 close to the light guide plate 3, the light guide plate 3 is umbrella-shaped, a protrusion 31 is arranged on a side surface of the light guide plate 3 close to the PCBA board 2, a side surface of the light guide plate 3 close to the PCBA board 2 is a light source receiving surface, the protrusion 31 is recessed towards a direction away from the PCBA board 2 to form a groove 311 with an inverted V-shaped vertical cross section, and the groove 311 is located right above the lamp bead 21.

Referring to fig. 1, a side surface of the light guide plate 3 close to the PCBA board 2 is provided with two or more protrusions 31, and each of the protrusions 31 is provided with a groove 311 having an inverted V-shaped vertical cross section.

The light guide plate 3 is made of transparent PC.

A side face, away from the PCBA board 2, of the light guide plate 3 is covered with a leather grain layer, and the leather grain layer can be made of PC.

The diameter of the notch of the groove 311 is greater than the width of the lamp bead 21, the length and width of the lamp bead 21 are 3.4 × 3.3(mm), and the diameter of the notch of the groove 311 is 7 mm.

The groove depth of the groove 311 ranges from 2.5mm to 3.7mm, preferably 3.1mm, and the groove inclination angle of the groove 311 ranges from 39 degrees to 50 degrees, preferably 45 degrees.

The sharp point of the inverted V-shaped groove 311 is right above the central point of the lamp bead 21.

The distance between the protrusion 31 and the lamp bead 21 ranges from 0.5mm to 1.5mm, and is preferably 1 mm.

The casing 1 includes lamp shade 11 and lamp body 12, PCBA board 2 passes through the screw fixation at the lamp body 12 inner chamber.

Referring to fig. 1 and 2, in this embodiment, taking a circular logo lamp as an example, the diameter of the housing 1 is about 100mm, the thickness is about 30mm, and the space is small, 8 beads 21 are distributed on the PCBA board 2, so 8 protrusions 31 are also configured on the light guide plate 3, and each protrusion 31 is provided with a groove 311 with an inverted V-shaped vertical cross section corresponding to each bead 21, so that the brightness above the bead 21 is reduced, and no bright spot appears.

In summary, according to the lamp provided by the utility model, the lamp beads are arranged on one side surface of the PCBA board close to the light guide plate, the light guide plate is umbrella-shaped, the light emitting surface of the light source can be effectively enlarged, the side surface of the light guide plate close to the PCBA board is provided with the protrusions, the protrusions are sunken towards the direction far away from the PCBA board to form the grooves with the inverted V-shaped vertical cross sections, the grooves are located right above the lamp beads, the inverted V-shaped grooves can refract light, so that the brightness right above the lamp beads is reduced, bright spots cannot occur, and the requirements on brightness and uniformity are met; the quantity of lamp pearl of the lamps and lanterns of this scheme design can be reduced by original 12 to 8, and the optical part only uses the light guide plate, has saved reflector panel and diffuser plate, has saved cost and space, has also avoided the heat dissipation problem.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a lamp, its characterized in that, includes a inside hollow casing, the casing inner chamber is equipped with PCBA board and light guide plate, the light guide plate is located PCBA board top, the PCBA board is equipped with the lamp pearl on being close to a side of light guide plate, the light guide plate is umbelliform, a side that the light guide plate is close to the PCBA board is equipped with the arch, the arch is sunken to the direction of keeping away from the PCBA board and forms a vertical cross-section and be the recess of falling V-arrangement, the recess is located the lamp pearl directly over.

2. A light fixture as recited in claim 1, wherein a leather layer is applied to a side of the light guide plate remote from the PCBA board.

3. A light fixture as recited in claim 1, wherein the notches of the grooves have a diameter greater than the width of the beads.

4. A light fixture as recited in claim 1, wherein the groove has a groove depth in the range of 2.5mm to 3.7 mm.

5. The lamp of claim 1, wherein the distance between the protrusion and the bead is in the range of 0.5mm to 1.5 mm.