CN218975018U - COB traffic signal lamp - Google Patents

Abstract

The utility model relates to a COB traffic signal lamp, which comprises a shell and a lamp wick, wherein the lamp wick is fixed in the shell, the lamp wick comprises a substrate and a colloid lens layer, a plurality of LED chips and reflective supports with convex shapes are arranged on the substrate, the LED chips and the reflective supports are distributed at intervals, and the colloid lens layer encapsulates the LED chips and the reflective supports on the substrate. The colloid lens layer provided by the utility model can refract and totally reflect light emitted by the LED chip, and after the light is secondarily reflected by the arranged reflective support body, the light is concentrated at an angle and projected on the effective area through the colloid lens layer, so that the light waste is avoided, the total power of the LED chip is reduced under the requirements of ensuring the overall luminous flux and luminous performance, and the LED chip has the advantages of low cost, long service life, uniform and continuous luminescence and the like.

Description

COB traffic signal lamp

Technical Field

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

Background

COB (Chip On Board) by reflow soldering the LED chip to the circuit board. Because the LED chips are dense, the LED chips have the advantages of uniform light emission, comfortable vision, low single-chip current, high light emitting efficiency, long service life, energy conservation, environmental protection and the like, and therefore, the LED chips are widely applied in the fields of illumination, brightening, signal and indication, and have great market potential.

The existing traffic signal lamp has the problems that the light source of the existing traffic signal lamp is an in-line LED, a patch type LED or a high-power LED, the lamp wick of the traffic signal lamp is too thick, the LED chips are large in use quantity, the material cost is high, the display particles are obvious, and the individual visual angles are in semicircular bright states, the service life is short, and the like. Meanwhile, the lens has small light-emitting surface, light rays are dazzling, visual discomfort and uneven light emission, the light rays are required to be scattered by the optical mask, the optical mask is added, the integral structure of the lamp wick is complicated, and the production and manufacturing cost is increased.

Disclosure of Invention

The utility model provides the COB traffic signal lamp which has low cost, long service life and uniform and continuous luminescence.

In order to achieve the above object, the following technical solutions are adopted.

The utility model provides a COB traffic signal lamp, includes casing and wick, the wick is fixed inside the casing, the wick includes base plate and colloid lens layer, be equipped with a plurality of LED chips and shape on the base plate and be protruding structure's reflection of light supporter, the LED chip with reflection of light supporter is interval distribution, colloid lens layer encapsulates LED chip and reflection of light supporter on the base plate.

In the above technical scheme, be equipped with the reflection of light supporter that a plurality of shapes are protruding structure on the base plate, reflection of light supporter with the LED chip is interval distribution, the side of reflection of light supporter is reflected to the partial light that sends on the LED chip, can gather the light angle and throw on effective region, avoids the light extravagant, and the light is more even continuous, reflection of light supporter's setting can reduce the total power of LED chip under the requirement of guaranteeing overall luminous flux and luminous performance to can use the little chip of less light emitting area, lower cost, effectively reduce cost, simultaneously, the total area that the LED chip used reduces by a wide margin, and single LED chip current density is extremely low, effectively reduces calorific capacity, has prolonged traffic signal lamp's life greatly. The LED chip and the reflective support body are packaged on the substrate by the colloid lens layer, the LED chip and the reflective support body are uniformly designed by the colloid lens layer, the LED chip and the reflective support body are different from the lens layer formed by combining a plurality of independent lenses in the prior art, the whole structure is greatly simplified, meanwhile, the colloid lens layer can replace an optical mask arranged outside the lens layer in the prior art, light rays are scattered, the reflective support body further gathers and projects the scattered partial light rays on an effective area after secondary reflection, the light emergent area is remarkably increased, the light rays are not dazzled, the vision is soft, comfortable and uniform and three-dimensional, the surface light source effect is achieved, and compared with the design that the lens layer is matched with the optical mask in the prior art, the use of the optical mask is omitted, the structure is simplified, and the production and manufacturing cost is further reduced.

Further, the reflective support is fixedly connected to the substrate after being injected and cured through vacuum molding or vacuum printing.

In the technical scheme, the reflective support body is injected on the substrate through vacuum die pressing or vacuum printing, is cured through high temperature or ultraviolet irradiation, and is stable in fixing effect and not easy to fall off.

Further, the reflective support is an opaque structure containing reflective material and having high reflectivity.

In the above technical scheme, the reflective support body is made of a light-tight substance, has high reflectivity to light and has excellent reflective effect.

Further, the reflective support body is a conical bulge with a large vertex angle and a small bus slope.

In the above technical scheme, the reflection of light supporter designs into the protruding structure of circular cone shape, and the side can reflect the light that the LED chip sent, and the structure of circular cone shape can make the light reflection angle that is close to the bottom little, and the light reflection angle that is close to the top is big, and simultaneously, its circular cone apex angle is the obtuse angle, and the apex angle is big, and the generating line slope is little, under fixed height, has increased the area of reflecting surface, guarantees the abundant reflection to the light that the LED chip sent. The light reflecting support body can collect light emitted by the LED chip on the effective area, so that light waste is avoided, uneven brightness and dullness of partial areas caused by serious light divergence can not occur, and light emission is more uniform and continuous, and reliability is high.

Further, the plurality of LED chips arranged on the substrate are arranged and distributed in a central symmetry mode according to the central point of the substrate, and the light reflecting supporting bodies are distributed in the intervals of the LED chips.

In the technical scheme, the LED chips and the reflective support bodies are distributed at intervals, the substrate center points are used as base points to be distributed in a central symmetry mode, the overall distribution is uniform and attractive, the using number and the using area of the LED chips can be reduced, the cost is effectively reduced, and meanwhile, the service life of the traffic signal lamp is prolonged.

Further, the colloid lens layer is a linear colloid structure with a light-transmitting smooth surface.

In the above technical scheme, the colloid lens layer is a linear colloid structure with good light transmittance and smooth surface, which is made of transparent silica gel, epoxy resin or UV glue, and the design of the uniform smooth colloid lens obviously increases the size of the light-emitting surface of the lens, and the light rays smaller than the critical angle of total reflection are refracted into the air layer by the total reflection principle between the colloid lens layer and the air layer, the light rays larger than the critical angle of total reflection are totally reflected, meanwhile, the reflective support body secondarily reflects part of the light rays reflected to the surface of the reflective support body again, the light rays after secondary reflection are further refracted and concentrated and projected on the effective area by the colloid lens layer, the light-emitting area is obviously increased, the light rays are uniform and continuous, and the visual effect is comfortable. Under the combined action of the colloid lens layer and the reflective support body, the whole light is more uniform and stereoscopic, the visual effect is excellent, and the lens layer is different from the design of the optical mask matched with the lens layer in the prior art, the structure is simplified, and the production and manufacturing cost is further reduced.

Further, the colloid lens layer uniformly covers the whole substrate and wraps the light reflecting support body and the LED chip.

In the above technical scheme, the colloid lens layer wraps the LED chip and the light-reflecting support body and uniformly covers the whole substrate, and protects the light-reflecting support body and the LED chip while stabilizing the light-reflecting support body.

Further, the colloid lens layer thickens the colloid part beyond the edge of the substrate, and the whole substrate is packaged in the colloid.

In the technical scheme, the colloid lens layer is covered on the substrate, the part exceeding the edge of the substrate is thickened, the thickness of the thickened part is consistent with that of the substrate, the thickened part is fixed with the side surface of the substrate, the whole substrate is packaged in the colloid, the whole structure of the substrate is protected and maintained, the effect of full sealing, dust prevention and water prevention is achieved, and the reliability of products is improved.

Compared with the prior art, the COB traffic signal lamp has the following beneficial effects:

first, with low costs, the side of reflection of light supporter is to the partial light that sends on the LED chip, can concentrate light angle and concentrate on effective region, avoids the light extravagant, and light is more even continuous, reflection of light supporter's setting can reduce the total power of LED chip under the requirement of guaranteeing overall luminous flux and luminescent property to can use less light emitting area, lower cost's chiplet, effectively reduce cost. Meanwhile, compared with the design that the lens layer is matched with the optical mask in the prior art, the design of the colloid lens layer omits the use of the optical mask and further reduces the production and manufacturing cost.

Second, long service life, the setting of reflection of light supporter can reduce the quantity of use of LED chip to reduce the usable floor area of LED chip, effectively reduced overall calorific capacity, prolonged traffic signal's life greatly.

Third, luminous even succession, reflection of light supporter is conical arch, can concentrate light angle and concentrate the projection on effective region, avoid the excessive divergence of light, simultaneously the colloid lens layer can scatter the light, reduces light center light intensity, makes the light not dazzling, and the vision is soft comfortable, just reflection of light supporter can be right the partial light of colloid lens layer scattering carries out secondary reflection of light supporter with under the combined action of lens layer, make light more even in succession, form the area light source effect, visual effect is more comfortable.

Drawings

Fig. 1 is a schematic structural diagram of the COB traffic signal lamp of the present utility model.

Fig. 2 is a schematic view of the COB traffic light of fig. 1 with a partially enlarged area rotated 90 ° counterclockwise.

Fig. 3 is a schematic view of the COB traffic light substrate of fig. 1 with a partially enlarged area at the edge rotated 90 ° counterclockwise.

Fig. 4 is a schematic view of the light inside the COB traffic light lamp wick of the present utility model.

Fig. 5 is a schematic diagram of COB traffic signal light distribution according to the present utility model.

Detailed Description

The COB traffic signal lamp of the present utility model will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1 to 4, in a non-limiting embodiment of the present utility model, a COB traffic signal lamp includes a housing 20 and a lamp core 10, the lamp core 10 is fixed inside the housing 20, the lamp core 10 includes a substrate 12 and a colloid lens layer 13, a plurality of LED chips 11 and reflective supports 14 having a convex structure are disposed on the substrate 12, the LED chips 11 and the reflective supports 14 are distributed at intervals, and the colloid lens layer 13 encapsulates the LED chips 11 and the reflective supports 14 on the substrate 12. In this technical scheme, be equipped with the reflection of light supporter 14 that a plurality of shapes are protruding structure on the base plate 12, reflection of light supporter 14 with LED chip 11 is interval distribution, the side of reflection of light supporter 14 is reflected the partial light that sends on the LED chip 11, can gather the light angle and throw on effective region, avoids the light extravagant, and the light is more even continuous, reflection of light supporter 14's setting can reduce the total power of LED chip 11 under the requirement of guaranteeing overall luminous flux and luminescent property to can use the little chip of less light emitting area, lower cost, effectively reduce cost, simultaneously, the total area that LED chip 11 used reduces by a wide margin, and single LED chip 11 current density is extremely low, effectively reduces calorific capacity, has prolonged the life of traffic signal lamp greatly. The colloid lens layer 13 encapsulates the LED chip 11 and the reflective support 14 on the substrate 12, and the lens layer adopts a uniform colloid design, which is different from the lens layer formed by combining a plurality of independent lenses in the prior art, so that the overall structure is greatly simplified, meanwhile, the colloid lens layer 13 can replace an optical mask arranged outside the lens layer in the prior art, scatter light rays, the reflective support 14 further gathers and projects the scattered light rays on an effective area through the colloid lens layer 13 after secondarily reflecting the scattered light rays, the light emitting area is obviously increased, the light rays are not dazzling, the vision is soft and comfortable, and the light rays are uniform and three-dimensional, compared with the design of the lens layer matched with the optical mask in the prior art, the use of the optical mask is omitted, the structure is simplified, and the production and manufacturing costs are further reduced. In this embodiment, the COB traffic light of the utility model is provided with a driving power source, which is located outside the housing 20, inside the housing 20, between the housing 20 and the wick 10, or on the substrate 12, and which converts the alternating current voltage or the stored energy voltage into direct current suitable for the LED.

Referring to fig. 2-4, in a non-limiting example of the present utility model, the retroreflective support 14 is attached to the substrate 12 after being injected and cured by vacuum molding or vacuum printing. In this technical scheme, the reflective support 14 is injected on the substrate 12 by vacuum molding or vacuum printing, and cured by high temperature or ultraviolet rays, so that the fixing effect is stable and the reflective support is not easy to fall off.

Referring to fig. 2 to 4, in a non-limiting embodiment of the present utility model, the light reflecting support 14 is an opaque structure with high reflectivity and contains a light reflecting material. In this technical solution, the reflective support 14 is opaque, and has an excellent reflective effect on light.

Referring to fig. 2 to 5, in a non-limiting embodiment of the present utility model, the reflective support 14 is a conical protrusion with an obtuse angle at the top angle and a small slope of the generatrix. In this technical scheme, the reflection support 14 is designed as a conical protruding structure, the side of the protruding structure can reflect the light emitted by the LED chip 11, the conical structure can make the light reflection angle near the bottom small, and the light reflection angle near the top large, and meanwhile, the conical vertex angle is obtuse, the vertex angle is large, the bus slope is small, and under the fixed height, the area of the reflection surface is increased, so that the full reflection of the light emitted by the LED chip is ensured. The light reflecting support body 14 gathers the light emitted by the LED chip 11 on the effective area, so that light waste is avoided, uneven brightness and dullness of partial areas caused by serious light divergence are avoided, and light emission is more uniform and continuous, and reliability is high. In this embodiment, the light emitted by the LED chip 11 is collected at a horizontal angle of-30 ° to +30°, and in a vertical direction of 0 ° to +30°, so that the light collecting effect is excellent.

Referring to fig. 2 to 4, in a non-limiting embodiment of the present utility model, the plurality of LED chips 11 disposed on the substrate 12 are arranged in a central symmetry manner at the center point of the substrate 12, and the reflective support 14 is disposed in the interval between the LED chips 11. In this technical scheme, LED chip 11 and reflection of light supporter 14 are interval distribution, and regard as the base point of base plate 12 central point and be central symmetry distribution, and whole distribution is even pleasing to the eye, and can reduce the quantity and the usable floor area of LED chip 11, effectively reduce cost, prolongs the life of traffic signal lamp simultaneously. In this embodiment, preferably, the LED chips 11 are flip-chip LED chips, so as to reduce the chip package volume and save space, and the center distance between every two LED chips 11 is not more than 10mm.

Referring to fig. 2 to 4, in a non-limiting embodiment of the present utility model, the colloidal lens layer 13 is a linear colloidal structure with a smooth surface having light transmittance. In this technical scheme, the colloid lens layer 13 is a linear colloid structure with smooth surface made of transparent silica gel, epoxy resin or UV glue, which increases the size of the light-emitting surface of the lens obviously, and refracts the light less than the critical angle of total reflection into the air layer by the principle of total reflection between the colloid lens layer 13 and the air layer, and totally reflects the light greater than the critical angle of total reflection, and at the same time, the reflective support 14 secondarily reflects the part of the light scattered on the surface, and the secondarily reflected light is further refracted and concentrated on the effective area by the colloid lens layer 13, which increases the light-emitting area obviously, so that the light is uniform and continuous, and the visual effect is comfortable. Under the combined action of the colloid lens layer 13 and the reflecting support body 14, the whole light is more uniform and three-dimensional, the visual effect is excellent, and the design is different from the design that the lens layer is matched with an optical mask in the prior art, so that the optical mask is omitted, the structure is simplified, and the production and manufacturing cost is further reduced.

Referring to fig. 2, in a non-limiting embodiment of the utility model, the colloid lens layer 13 wraps the LED chip 11 and the reflective support 14 and uniformly covers the entire substrate 12, and protects the reflective support 14 and the LED chip 11 while stabilizing the reflective support 14. In this technical scheme, the colloid lens layer 13 wraps the LED chip 11 and the reflective support body 14 and uniformly covers the entire substrate 12, so that the reflective support body 14 and the LED chip 11 are effectively protected while the reflective support body 14 is stabilized.

Referring to fig. 3, in a non-limiting embodiment of the present utility model, the gel lens layer 13 thickens the gel portion beyond the edge of the substrate 12, so as to encapsulate the entire substrate 12 inside the gel. In this technical scheme, the colloid lens layer 13 covers on the base plate 12, and the part that surpasses the edge of base plate 12 is thickened, and the thickening part thickness is unanimous with base plate 12 thickness to fixed mutually with base plate 12 side, encapsulates whole base plate 12 inside the colloid, protects and maintains the overall structure of base plate 12, and reaches full sealed dustproof waterproof effect, improves product reliability. .

In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

While the utility model has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following claims.

Claims (8)

1. The utility model provides a COB traffic signal lamp, includes casing (20) and wick (10), inside casing (20) are fixed to wick (10), its characterized in that, wick (10) include base plate (12) and colloid lens layer (13), be equipped with a plurality of LED chips (11) and shape on base plate (12) and be protruding structure's reflection of light supporter (14), LED chip (11) with reflection of light supporter (14) are interval distribution, colloid lens layer (13) are with LED chip (11) and reflection of light supporter (14) encapsulation on base plate (12).

2. COB traffic light according to claim 1, characterized in that the reflective support (14) is fixed to the base plate (12) by connection after injection and curing by vacuum molding or vacuum printing.

3. The COB traffic light as claimed in claim 1, characterized in that the light-reflecting support (14) is a light-tight structure containing light-reflecting substances and having a high reflectivity.

4. The COB traffic light as claimed in claim 1, characterized in that the reflective support (14) is a conical protrusion with a large apex angle and a small bus slope.

5. The COB traffic signal lamp as claimed in claim 1, wherein the plurality of LED chips (11) disposed on the substrate (12) are arranged in a central symmetrical arrangement with respect to a central point of the substrate (12), and the reflective support (14) is arranged in a space of the LED chips (11).

6. COB traffic light according to claim 1, characterized in that the colloidal lens layer (13) is a linear colloidal structure with a light-transmissive smooth surface.

7. The COB traffic light according to claim 1, characterized in that the colloid lens layer (13) is uniformly covered on the whole substrate (12), wrapping the reflective support (14) and the LED chip (11).

8. The COB traffic light according to claim 7, characterized in that the glue lens layer (13) thickens the glue portion beyond the edge of the substrate (12), encapsulating the entire substrate (12) inside the glue.

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