CN207455309U

CN207455309U - A kind of LED lamp

Info

Publication number: CN207455309U
Application number: CN201721412584.9U
Authority: CN
Inventors: 张发伟; 金小明
Original assignee: Ningbo Self Electronics Co Ltd
Current assignee: Ningbo Self Electronics Co Ltd
Priority date: 2017-10-30
Filing date: 2017-10-30
Publication date: 2018-06-05
Anticipated expiration: 2027-10-30

Abstract

A kind of LED lamp, including a LED chip, a light-guiding pillar and a lens.There are one chip optical axises for the LED chip tool.The light-guiding pillar includes a central shaft, the plane of incidence for being arranged on described central shaft one end and an exit facet for being arranged on the central shaft other end.The optical axis and the center overlapping of axles and the LED chip are arranged on the one side of the plane of incidence of the light-guiding pillar.For a plus lens and including a lens axis, the exit facet of the light-guiding pillar is arranged in the focus of the lens and perpendicular to the lens axis lens.First by the light-guiding pillar and utilize diminution of the characteristic to the light-emitting angle of LED chip of the light-guiding pillar, then lead to the lens again further to reduce the light-emitting angle of the emergent light of the light-guiding pillar, the light-emitting angle for the 180 degree being emitted so as to LED chip narrows down to 10 degree or so, so as to meet some specific demands of user.

Description

A kind of LED lamp

Technical field

The utility model is related to a kind of lighting devices, particularly a kind of LED lamps and lanterns that can provide illumination effect.

Background technology

In general daily life, all visible various lighting apparatus everywhere, for example, fluorescent lamp, street lamp, desk lamp, skill Art lamp etc..In above-mentioned lighting apparatus, traditionally most of is using osram lamp as illuminating source.In recent years, due to section Skill is maked rapid progress, by the use of light emitting diode (LED) as light sources.Notably, in addition to lighting apparatus, for general traffic number Will, billboard, car light etc. are also changed to use light emitting diode as illuminating source.As previously mentioned, made using light emitting diode For illuminating source, power saving, and brightness bigger are advantageous in that, therefore the gradual generalization on using.

With the development of lighting engineering, requirement of the people to LED light source is higher and higher, such as the size of hot spot.And hot spot Size generally controlled by the light-emitting angle of LED lamp.But on the basis of light quantity is not lost, i.e., without being directly in the light On the basis of, the light-emitting angle for reducing LED lamp is difficult to accomplish, such as controls light-emitting angle at 10 degree or so.Because LED The light-emitting angle of chip is 180 degree, and is narrowed down to 10 degree or so, is relatively difficult.

Utility model content

In view of this, it is necessary to a kind of LED lamp that smaller light-emitting angle can be provided is provided, to meet the demand.

A kind of LED lamp, including a LED chip, a leaded light being arranged on the light direction of the LED chip Column and the lens being arranged on the light direction of the light-guiding pillar.There are one chip optical axises for the LED chip tool.Institute Stating light-guiding pillar includes a central shaft, the plane of incidence for being arranged on described central shaft one end and one be arranged on it is described in The exit facet of the mandrel other end.The optical axis is arranged on entering for the light-guiding pillar with the center overlapping of axles and the LED chip Penetrate the one side in face.For a plus lens and including a lens axis, the exit facet of the light-guiding pillar is arranged on the lens In the focus of the lens and perpendicular to the lens axis.

Further, the LED chip is a kind of chip on board packaged type LED chip.

Further, the light-guiding pillar is a taper type cylinder, and the plane of incidence of the light-guiding pillar is located at the taper type cylinder The smaller one end of diameter.

Further, the light-guiding pillar is a polygon-prism.

Further, the light-guiding pillar is a quadrangular.

Further, the plane of incidence of the light-guiding pillar has pit.

Further, the LED chip is embedded in the pit.

Further, the light-emitting surface of the LED chip is flushed with the plane of incidence of the light-guiding pillar.

Compared with prior art, first by the light-guiding pillar and using the light-guiding pillar characteristic to the light extraction of LED chip Then the diminution of angle leads to the lens and further reduces the light-emitting angle of the emergent light of the light-guiding pillar again, so as to 10 degree or so can be narrowed down to the light-emitting angle for the 180 degree that LED chip is emitted, so as to meet some special need of user It asks.

Description of the drawings

The embodiment of the utility model is described below in conjunction with attached drawing, wherein：

Fig. 1 is a kind of structure diagram of LED lamp provided by the utility model.

Fig. 2 is the cross section structure schematic diagram of the LED lamp of Fig. 1.

Specific embodiment

Specific embodiment of the utility model is further elaborated below based on attached drawing.It should be appreciated that herein Described specific embodiment only as embodiment, is not used to limit the scope of protection of the utility model.

It please refers to Fig.1 to Fig. 2, is a kind of structure diagram of LED lamp 100 provided by the utility model.It is described LED lamp 100 include a LED chip 10, a light-guiding pillar 20 being arranged on the light direction of the LED chip 10, with And the lens 30 being arranged on the light direction of the light-guiding pillar 20.It is envisioned that the LED lamp 100 is also wrapped Some other function modules, such as lamp housing, lampshade, power supply, circuit board etc. are included, but it has existing skill by LED lamp 100 Art is known by those skilled in the art, is no longer described in detail one by one herein.There are one chip optical axises for the tool of LED chip 10 101.Electric energy is converted into luminous energy by the LED chip 10, its main feature is that it is energy saving, efficiently, and environmental protection, and be the prior art.It is described LED chip 10 can be a kind of chip on board packaged type LED chips (COB, Chip on Board).The light-guiding pillar 20 includes One central shaft 21, the plane of incidence 22 for being arranged on described 21 one end of central shaft and one are arranged on the central shaft 21 The exit facet 23 of the other end.The light-guiding pillar 22 is bigger than air using the refractive index of guide-lighting column material, easily forms total reflection Principle, most light is oriented to the position of easy light distribution.Light in light-guiding pillar 20 is to rely on total internal reflection in it Portion's transmission.Light-guiding pillar 20 is typically to be made of optical material, such as acrylic resin, makrolon, epoxy resin or glass Etc..The chip optical axis 101 is overlapped with the central shaft 21 and the incidence of the light-emitting surface of the LED chip 10 and light-guiding pillar 20 Face 22 flushes.The light-guiding pillar 20 can be a taper type cylinder or polygon-prism such as quadrangular.When the light-guiding pillar 20 For taper type cylinder when, the plane of incidence 22 of the light-guiding pillar 20 is located at smaller one end of diameter of the taper type cylinder.The LED Chip 10 is arranged on the one side of the plane of incidence 22 of the light-guiding pillar 20, can flush, can also be embedded with the plane of incidence 22 In the plane of incidence 22.When the LED chip 10 is embedded in the plane of incidence 22, the plane of incidence 22 of the light-guiding pillar 20 With pit.The lens 30 are for a plus lens and including a lens axis 31, the exit facet 23 of the light-guiding pillar 20 It is arranged in the focus of the lens 30 and perpendicular to the lens axis 31.The lens 30 are made of optical material, and thoroughly Mirror is the optical element that the surface made of transparency material is piece.The plus lens can be to light towards the lens light Direction of principal axis 31 carries out the deviation of certain angle, so as to further reduce light-emitting angle.

Compared with prior art, first by the light-guiding pillar 20 and using the light-guiding pillar 20 characteristic to LED chip 10 Light-emitting angle diminution, then again by the lens 30 further by the light-emitting angle of the emergent light of the light-guiding pillar 20 It is reduced, the light-emitting angle for the 180 degree being emitted so as to LED chip 10 narrows down to 10 degree or so, so as to meet Some specific demands of user.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this The spirit of utility model and interior the made all any modification, equivalent and improvement of principle etc., should be included in the utility model Protection domain it is interior.

Claims

1. a kind of LED lamp, which is characterized in that the LED lamp includes a LED chip, and one is arranged on the LED chip Light direction on light-guiding pillar and the lens being arranged on the light direction of the light-guiding pillar, LED chip tool There are one chip optical axis, the light-guiding pillar includes a central shaft, the plane of incidence for being arranged on described central shaft one end and One exit facet for being arranged on the central shaft other end, the optical axis are set with the center overlapping of axles and the LED chip In the one side of the plane of incidence of the light-guiding pillar, the lens are for a plus lens and including a lens axis, the leaded light The exit facet of column is arranged in the focus of the lens and perpendicular to the lens axis.

2. LED lamp as described in claim 1, it is characterised in that：The LED chip is a kind of chip on board packaged type LED Chip.

3. LED lamp as described in claim 1, it is characterised in that：The light-guiding pillar be a taper type cylinder, the light-guiding pillar The plane of incidence be located at smaller one end of diameter of the taper type cylinder.

4. LED lamp as described in claim 1, it is characterised in that：The light-guiding pillar is a polygon-prism.

5. LED lamp as claimed in claim 4, it is characterised in that：The light-guiding pillar is a quadrangular.

6. LED lamp as described in claim 1, it is characterised in that：The plane of incidence of the light-guiding pillar has pit.

7. LED lamp as claimed in claim 6, it is characterised in that：The LED chip is embedded in the pit.

8. LED lamp as described in claim 1, it is characterised in that：The light-emitting surface of the LED chip enters with the light-guiding pillar The face of penetrating flushes.