CN113958891A - LED lamp area with PCB lamp plate of buckling - Google Patents

LED lamp area with PCB lamp plate of buckling Download PDF

Info

Publication number
CN113958891A
CN113958891A CN202111292426.5A CN202111292426A CN113958891A CN 113958891 A CN113958891 A CN 113958891A CN 202111292426 A CN202111292426 A CN 202111292426A CN 113958891 A CN113958891 A CN 113958891A
Authority
CN
China
Prior art keywords
pcb lamp
pcb
led
strip
lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111292426.5A
Other languages
Chinese (zh)
Inventor
商成火
黄敏飞
曾凡亦
刘昌贵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Collier Lighting Co ltd
Shenzhen Clear Lighting Co ltd
Original Assignee
Huizhou Collier Lighting Co ltd
Shenzhen Clear Lighting Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou Collier Lighting Co ltd, Shenzhen Clear Lighting Co ltd filed Critical Huizhou Collier Lighting Co ltd
Priority to CN202111292426.5A priority Critical patent/CN113958891A/en
Publication of CN113958891A publication Critical patent/CN113958891A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00Lighting devices or systems using a string or strip of light sources
    • F21S4/20Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/24Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/005Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Led Device Packages (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention discloses an LED lamp strip with a bent PCB lamp panel, which at least comprises: the core wire comprises at least one PCB lamp panel, at least one surface of each PCB lamp panel is welded with an LED light source and a paster electronic component, and the LED light sources and the paster electronic components are electrically connected; the insulating wrapping layer wraps the core wire; wherein, at least one PCB lamp plate adopts crooked setting. By implementing the embodiment of the invention, multidirectional bending of the lamp strip can be realized, longer service length can be realized, and the application is very wide.

Description

LED lamp area with PCB lamp plate of buckling
Technical Field
The invention relates to the field of display, in particular to an LED lamp strip with a bent PCB lamp panel.
Background
As shown in fig. 1 to 3, a flexible light strip of the prior art is shown. In this kind of flexible light strip that has now, through FPCB lamp plate 1 ', heart yearn 2 ' and a layer of soft elastic plastic or silica gel 3 ' cladding formation a complete flexible light strip, wherein, heart yearn 2 ' need not to have the wire, directly conducts electricity as the conductor through FPCB lamp plate 1 ', so FPCB lamp plate 1 ' needs to be isometric with heart yearn 2 '.
However, in the process of using the above LED strip, the LED strip can be bent only in one direction, as shown in fig. 2, that is, the FPCB lamp panel 1 'can be bent in the up-and-down direction of the horizontal plane, and the bending force of the FPCB lamp panel 1' in the bending direction is equivalent; as shown in fig. 3, if the bending occurs in another direction, that is, when such a light strip is bent horizontally, the FPCB lamp panel 1 ' is subjected to different stresses, wherein one side is compressed and the other side is elongated, although the elastic plastic or silicone 3 ' can be compressed or stretched, the light strip itself cannot satisfy the force of shortening or elongating the FPCB lamp panel 1 ', and when the bending force is large enough, the wires may be broken.
The existing lamp strip with the long-strip-shaped FPCB lamp panel can only be limited to be bent in one direction, so that the lamp strip is limited by a large degree in a use scene, and more application fields with requirements on the bending direction cannot be met.
Disclosure of Invention
The invention aims to solve the technical problem of providing an LED lamp strip with a bent PCB lamp panel, which can realize multidirectional bending of the lamp strip and is suitable for more application occasions.
In order to solve the above technical problem, the present invention provides an LED strip with a bent PCB lamp panel, which at least comprises:
the core wire comprises at least one PCB lamp panel, at least one surface of each PCB lamp panel is welded with an LED light source and a paster electronic component, and the LED light sources and the paster electronic components are electrically connected;
the insulating wrapping layer wraps the core wire;
wherein, at least one PCB lamp plate adopts crooked setting.
Preferably, the PCB lamp panel is bent in a wave shape, a repeated triangular shape, a repeated zigzag shape or a twisted twist shape.
Preferably, the PCB lamp panel is a strip, and the length of the strip is the same as that of the LED lamp strip.
Preferably, the PCB lamp panels are sectional PCB lamp panels, the number of the sectional PCB lamp panels is at least two, and adjacent PCB lamp panels are connected by adopting connecting lines; the connecting wire is arranged in a bending mode.
Preferably, the PCB lamp panels are connected in parallel to the two main guide lines, or connected in parallel to the two main guide lines after being connected in series by adopting a plurality of groups of PCB lamp panels with preset quantity.
Preferably, each leading wire is at least partly wave curve or coil spring curve, the connecting wire of concatenating between adjacent PCB lamp plate, connecting the connecting wire of connecting between PCB lamp plate and leading wire all adopt continuous or discontinuous wavy structure, coil spring column structure.
Preferably, LED light sources are welded on the two sides of each PCB lamp panel.
Preferably, the insulation wrapping layer is made of silica gel or soft plastic, and the cross section of the insulation wrapping layer is circular, oval, rectangular or other polygonal shapes.
The embodiment of the invention has the following beneficial effects:
the invention provides an LED lamp strip with a bent PCB lamp panel, wherein the PCB lamp panel is set to be in a bent shape, and compared with a straight-bar-shaped PCB lamp panel, the LED lamp strip can buffer the impact on the PCB lamp panel when being bent in all directions; thereby improving the bending performance of the LED lamp strip;
meanwhile, at least part of each main conductor, the connecting wire between the PCB lamp panels and the main conductor are arranged in a bending way, so that the main conductor and the connecting wire have the performances of compressibility, stretchability and flexibility, and the bending resistance of the lamp belt can be improved;
meanwhile, as the PCB lamp panels are adopted in the core wires, the SMD LED light sources can be welded on two sides of each PCB lamp panel, so that the LED lamp strip can emit light at 360 degrees, the phenomenon that the light sources fail when the lamp strip is bent for use can be avoided, and the application occasion and the construction convenience of the lamp strip are improved;
particularly, the PCB lamp panel can be twisted, so that the flexible LED lamp can be applied to complex occasions, such as twisting a lamp strip or bending a neon flexible lamp at will;
due to the adoption of the sectional type PCB lamp panel, the LED lamp strip provided by the invention can realize longer connection and use length and can be manufactured into various sizes, and the application is very wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a partial cross-sectional view of a prior art flexible light strip;
fig. 2 is a schematic view of the flexible light strip of fig. 1 bent in a first direction;
fig. 3 is a schematic view of the flexible light strip of fig. 1 bent in a second direction;
fig. 4 is a schematic structural diagram of a LED strip according to a first embodiment of the present invention;
FIG. 5 is a schematic structural diagram of the PCB lamp panel in FIG. 4;
FIG. 6 is a side view of a second PCB lamp panel according to the present invention;
FIG. 7 is a side view of a third PCB lamp panel to which the present invention relates;
FIG. 8 is a side view of a fourth PCB lamp panel to which the present invention relates;
fig. 9 is a schematic structural diagram of an LED strip according to a second embodiment of the present invention;
FIG. 10 is a schematic structural diagram of the PCB lamp panel in FIG. 9;
fig. 11 is a schematic structural diagram of a LED strip according to a third embodiment of the present invention;
FIG. 12 is a schematic view of the PCB lamp panel of FIG. 11 connected to a main conductor;
fig. 13 is a schematic structural diagram of a LED strip according to a fourth embodiment of the present invention;
FIG. 14 is a schematic view of the PCB lamp panel of FIG. 12 connected to a main conductor;
fig. 15 is a schematic structural diagram of a LED strip according to a fifth embodiment of the present invention;
FIG. 16 is a schematic view of the PCB lamp panel of FIG. 15 connected to a main conductor;
FIG. 17 is a schematic structural diagram of a second connecting wire provided in the present invention;
FIG. 18 is a schematic structural diagram of a third connecting line provided by the present invention;
FIG. 19 is a schematic structural view of a second main conductor provided in the present invention;
FIG. 20 is a schematic structural view of a third main conductor provided by the present invention;
fig. 21 is a schematic structural diagram of an LED strip according to a sixth embodiment of the present invention;
fig. 22 is a schematic structural diagram of an LED strip shown in the seventh embodiment of the present invention;
fig. 23 is a schematic view of the LED strip provided by the present invention being bent in multiple directions and angles.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 4 to 5, a first embodiment of the LED strip with a bent PCB lamp panel provided by the present invention is shown.
In this embodiment one, have the LED lamp area of the PCB lamp plate of buckling, include at least:
the LED lamp comprises a core wire 2, a groove is formed in the core wire, a strip-shaped PCB lamp panel 1 is arranged in the groove, a plurality of welding areas are arranged on one surface of the PCB lamp panel 1 to weld an LED light source 10 and a patch electronic component (not shown in the figure), and the LED light source 10 and the patch electronic component are electrically connected; more specifically, the PCB lamp panel 1 may be made of copper, aluminum substrate, fiber board, or other materials; it can be understood that can carry out the power cord wiring on this PCB lamp plate 1, PCB lamp plate 1 is roughly the same with the length in LED lamp area.
An insulation coating layer 3 coating the core wire; the insulating wrapping layer is made of silica gel or soft plastic, and specifically can be made of materials such as PVC, silica gel, PU and the like; the cross section of the material is circular, oval, rectangular or other polygons. In this embodiment, each PCB lamp panel 1 may be placed on the symmetrical center of the cross section of the LED strip;
wherein, PCB lamp plate 1 adopts crooked setting, and in fig. 5, this PCB lamp plate adopts the wave type to be crooked.
In the present invention, the PCB lamp panel 1 may also adopt other curved shapes, such as a repeated triangular curved shape shown in fig. 6, and more specifically, it includes repeated equidistant oblique triangles; while in fig. 7 a repeating zig-zag curved shape is shown, more specifically comprising repeating equidistant rectangles; one twist-like curvature is shown in fig. 8. It is understood that the PCB lamp panel 1 in all embodiments herein can be configured in the shapes shown in fig. 5 to 8 and the like.
The various PCB lamp panels are provided with the LED light sources on a single surface, and it can be understood that the PCB lamp panels provided with the LED light sources by welding on two surfaces can also be adopted in the invention, and other electronic components on the circuit are not the key points of the invention, so the detailed description is not provided.
Meanwhile, the cross section of the insulating wrapping layer 3 in the first embodiment is rectangular, and in other embodiments, the cross section may also be circular, oval or other polygons.
As shown in fig. 9 to 10, a second embodiment of the LED strip with a bent PCB lamp panel provided by the present invention is shown.
In the second embodiment, the difference from the first embodiment is that: the PCB lamp panel 1 contained in the core wire adopts a PCB lamp panel with a double-sided LED light source, and the cross section of the insulation wrapping layer 3 is circular.
It can be understood that in other embodiments of the present invention, main wires may also be disposed on units on both sides of the PCB lamp panel.
As shown in fig. 11 to 12, a third embodiment of the LED strip with a bent PCB lamp panel provided by the present invention is shown.
In the third embodiment, the difference from the first embodiment is that: two bent main guide lines 4 are arranged on two sides of the PCB lamp panel 1, the main guide lines 4 provide power for the LED light sources 10 on the PCB lamp panel 1, and particularly, the LED light sources can be electrically connected in a welding or connecting line mode. Wherein, the connecting wire can be made of iron, copper, aluminum, copper and the like or the alloy of the materials;
it is understood that in other embodiments of the present invention, the PCB lamp panel may be configured as a sectional PCB lamp panel.
As shown in fig. 13 to 14, a fourth embodiment of the LED strip with a bent PCB lamp panel provided by the present invention is shown.
In the fourth embodiment, the difference from the third embodiment is that: in the heart yearn, adopt the PCB lamp plate 1 of a plurality of sectional types, each PCB lamp plate 1 all connects in parallel to on two leading wire 4 through connecting wire 5. In other embodiments, a plurality of groups of PCB lamp panels with a predetermined number may be connected in series and then connected in parallel to the two main conducting wires 4. Wherein the two main guide lines 4 are in a curved form to provide redundancy in bending.
As shown in fig. 15 to 16, a fifth embodiment of the LED strip with a bent PCB lamp panel provided by the present invention is shown.
In the fifth embodiment, the difference from the fourth embodiment is that: the PCB lamp panel 1 is in a twisted curved shape with two sides provided with LED light sources.
It is understood that, in other embodiments of the present invention, the connection lines connected in series between adjacent PCB lamp panels and the connection lines connected between the PCB lamp panels and the main conductor may adopt other curved forms, for example, a continuous or discontinuous wavy structure, and a spiral spring structure. Wherein figure 17 shows a wave-like structure; fig. 18 shows a coil spring-like structure. The connecting lines in the above embodiments may be replaced by the two curved structures. Meanwhile, in other embodiments of the present invention, the connecting line may also adopt a continuous or discontinuous broken line or a random curve, etc. By arranging the connecting wires in a zigzag shape, the length of the connecting wires can be larger than the distance between the parts connected with the connecting wires, and better redundant length is provided when the connecting wires are bent, so that the connecting wires have enough large displacement and can be elongated or shortened when the lamp strip is bent for use.
Meanwhile, in other embodiments of the present invention, the main conductor 4 may also have a shape different from the above-described embodiments. For example, a coil spring curve (as shown in FIG. 19) may be used; in other examples, two thin wires 40 may be braided around a reinforcing cord 41 (or reinforcing strip) (as shown in fig. 20).
Fig. 21 shows a sixth embodiment of the LED strip with a bent PCB lamp panel provided in the present invention; in the sixth embodiment, the main conductor 4 adopts the structure shown in fig. 19.
Fig. 22 shows a seventh embodiment of the LED strip with a bent PCB lamp panel provided in the present invention; in the seventh embodiment, the main conductor 4 adopts the structure shown in fig. 20.
It is understood that in the above-described embodiments, the main conductor 4 may be replaced with the structure shown in fig. 19 or fig. 20.
Meanwhile, in the embodiment of the invention, the PCB lamp panel 1 can be arranged at the symmetrical center of the section of the LED lamp strip, and the PCB lamp panel is bent, so that the PCB lamp panel is very convenient to arrange and can be arranged horizontally or at other angles.
FIG. 23 is a schematic view showing multi-directional multi-angle bending according to various embodiments of the present invention. The effect of the multi-angle and multi-directional bending using of the invention can be more clearly understood, and the bending effect in two different directions (shown by dotted lines) is shown in the figure. It will be appreciated that other angles and orientations of bends may be implemented without damaging the internal circuit structure. The effects shown in fig. 23 can be achieved in all of the above embodiments one to seven.
The embodiment of the invention has the following beneficial effects:
the invention provides an LED lamp strip with a bent PCB lamp panel. The PCB lamp panel is bent, so that compared with a straight strip-shaped PCB lamp panel, the LED lamp panel can buffer impact on the PCB lamp panel when the LED lamp panel is bent in all directions; thereby improving the bending performance of the LED lamp strip;
meanwhile, at least part of each main conductor, the connecting wire between the PCB lamp panels and the main conductor are arranged in a bending way, so that the main conductor and the connecting wire have the performances of compressibility, stretchability and flexibility, and the bending resistance of the lamp belt can be improved;
meanwhile, as the PCB lamp panels are adopted in the core wires, the SMD LED light sources can be welded on two sides of each PCB lamp panel, so that the LED lamp strip can emit light at 360 degrees, the phenomenon that the light sources fail when the lamp strip is bent for use can be avoided, and the application occasion and the construction convenience of the lamp strip are improved;
particularly, the PCB lamp panel can be twisted, so that the flexible LED lamp can be applied to complex occasions, such as twisting a lamp strip or bending a neon flexible lamp at will;
due to the adoption of the sectional type PCB lamp panel, the LED lamp strip provided by the invention can realize longer connection and use length and can be manufactured into various sizes, and the application is very wide.
The above description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the claims, therefore, other equivalent changes and modifications should be made without departing from the spirit of the present invention.

Claims (8)

1. The utility model provides a LED lamp area with PCB lamp plate buckles which characterized in that includes at least:
the core wire comprises at least one PCB lamp panel, at least one surface of each PCB lamp panel is welded with an LED light source and a paster electronic component, and the LED light sources and the paster electronic components are electrically connected;
the insulating wrapping layer wraps the core wire;
wherein, at least one PCB lamp plate adopts crooked setting.
2. The LED light strip of claim 1, wherein the PCB light panel is at least partially undulated, repeating triangular, repeating zig-zag, or twisted.
3. The LED light strip of claim 2, wherein the PCB light panel is a strip having the same length as the LED light strip.
4. The LED lamp strip according to claim 2, wherein the PCB lamp panels are sectional PCB lamp panels, the number of the sectional PCB lamp panels is at least two, and adjacent PCB lamp panels are connected by connecting wires; the connecting wire is arranged in a bending mode.
5. The LED lamp strip according to claim 3 or 4, further comprising two main wires disposed at two sides of the core wire, wherein each of the PCB lamp panels is connected in parallel to the two main wires, or connected in series by using a plurality of groups of PCB lamp panels with a predetermined number and then connected in parallel to the two main wires.
6. The LED lamp strip according to claim 5, wherein each main conducting wire is at least partially a wave curve or a spiral spring curve, and the connecting wires connected in series between adjacent PCB lamp panels and the connecting wires connected between the PCB lamp panels and the main conducting wires are all in a continuous or discontinuous wave structure, a spiral spring structure or a broken line structure.
7. The LED strip of claim 6, wherein each PCB lamp panel has LED light sources soldered to both sides.
8. The LED light strip according to claim 7, wherein the insulation coating is made of silicone or soft plastic, and the cross section of the insulation coating is circular, oval, rectangular or other polygonal shapes.
CN202111292426.5A 2021-11-03 2021-11-03 LED lamp area with PCB lamp plate of buckling Pending CN113958891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111292426.5A CN113958891A (en) 2021-11-03 2021-11-03 LED lamp area with PCB lamp plate of buckling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111292426.5A CN113958891A (en) 2021-11-03 2021-11-03 LED lamp area with PCB lamp plate of buckling

Publications (1)

Publication Number Publication Date
CN113958891A true CN113958891A (en) 2022-01-21

Family

ID=79469049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111292426.5A Pending CN113958891A (en) 2021-11-03 2021-11-03 LED lamp area with PCB lamp plate of buckling

Country Status (1)

Country Link
CN (1) CN113958891A (en)

Similar Documents

Publication Publication Date Title
CN109599403B (en) Metal routing
CN110792941A (en) LED lamp strip capable of being bent in multiple directions
US20220381409A1 (en) Led lamp strip capable of being bent in multiple directions and lamp string structure therefor
CN212986850U (en) LED lamp strip capable of being bent in multiple directions and LED lamp string structure thereof
CN211146159U (en) L ED lamp strip capable of being bent in multiple directions
CN216383737U (en) LED lamp area with PCB lamp plate of buckling
CN110381665A (en) Circuit board assemblies and electronic equipment
CN113958891A (en) LED lamp area with PCB lamp plate of buckling
CN214064618U (en) LED lamp strip and LED lamp string structure thereof
CN216789942U (en) LED lamp strip
CN216383738U (en) Flexible LED lamp area
CN112664856A (en) LED lamp strip and LED lamp string structure thereof
CN216769140U (en) LED lamp area with additional strengthening
CN112747268A (en) LED lamp area with high bending performance
CN214275424U (en) Novel flexible LED lamp area
CN218237149U (en) LED lamp strip capable of being bent in any direction
WO2001050482A1 (en) Flat cable
CN214275423U (en) Flexible LED lamp area
CN218671705U (en) Flexible lamp strip capable of being cut at will
CN209912526U (en) Flexible flat cable
CN210073372U (en) Flexible flat bisection slitting cable
CN219936694U (en) Continuous length high-power flat super-flexible conductor
JP2000268642A (en) End structure of extra fine wire
CN213339729U (en) Cable and electronic device having the same
JP3240852B2 (en) Flat multi-core wire

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination